The QLineEdit widget is a one-line text editor. More...

#include <qlineedit.h>

Inheritance diagram for QLineEdit:

Public Types
enum	EchoMode { Normal, NoEcho, Password, PasswordEchoOnEdit }
	This enum type describes how a line edit should display its contents. More...

Public Types inherited from QWidget
enum	RenderFlag { DrawWindowBackground = 0x1, DrawChildren = 0x2, IgnoreMask = 0x4 }
	This enum describes how to render the widget when calling QWidget::render(). More...

Public Types inherited from QPaintDevice
enum	PaintDeviceMetric { PdmWidth = 1, PdmHeight, PdmWidthMM, PdmHeightMM, PdmNumColors, PdmDepth, PdmDpiX, PdmDpiY, PdmPhysicalDpiX, PdmPhysicalDpiY }

Public Slots
void	clear ()
	Clears the contents of the line edit. More...

void	copy () const
	Copies the selected text to the clipboard, if there is any, and if echoMode() is Normal . More...

void	cut ()
	Copies the selected text to the clipboard and deletes it, if there is any, and if echoMode() is Normal . More...

void	paste ()
	Inserts the clipboard's text at the cursor position, deleting any selected text, providing the line edit is not read-only. More...

void	redo ()
	Redoes the last operation if redo is available. More...

void	selectAll ()
	Selects all the text (i.e. More...

void	setText (const QString &)

void	undo ()
	Undoes the last operation if undo is available. More...

Public Slots inherited from QWidget
bool	close ()
	Closes this widget. More...

void	hide ()
	Hides the widget. More...

void	lower ()
	Lowers the widget to the bottom of the parent widget's stack. More...

void	raise ()
	Raises this widget to the top of the parent widget's stack. More...

void	repaint ()
	Repaints the widget directly by calling paintEvent() immediately, unless updates are disabled or the widget is hidden. More...

void	setDisabled (bool)
	Disables widget input events if disable is true; otherwise enables input events. More...

void	setEnabled (bool)

void	setFocus ()
	Gives the keyboard input focus to this widget (or its focus proxy) if this widget or one of its parents is the active window. More...

void	setHidden (bool hidden)
	Convenience function, equivalent to setVisible(!hidden). More...

QT_MOC_COMPAT void	setShown (bool shown)
	Use setVisible(shown) instead. More...

void	setStyleSheet (const QString &styleSheet)

virtual void	setVisible (bool visible)

void	setWindowModified (bool)

void	setWindowTitle (const QString &)

void	show ()
	Shows the widget and its child widgets. More...

void	showFullScreen ()
	Shows the widget in full-screen mode. More...

void	showMaximized ()
	Shows the widget maximized. More...

void	showMinimized ()
	Shows the widget minimized, as an icon. More...

void	showNormal ()
	Restores the widget after it has been maximized or minimized. More...

void	update ()
	Updates the widget unless updates are disabled or the widget is hidden. More...

Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. More...

Signals
void	cursorPositionChanged (int, int)
	This signal is emitted whenever the cursor moves. More...

void	editingFinished ()
	This signal is emitted when the Return or Enter key is pressed or the line edit loses focus. More...

void	returnPressed ()
	This signal is emitted when the Return or Enter key is pressed. More...

void	selectionChanged ()
	This signal is emitted whenever the selection changes. More...

void	textChanged (const QString &)
	This signal is emitted whenever the text changes. More...

void	textEdited (const QString &)
	This signal is emitted whenever the text is edited. More...

Signals inherited from QWidget
void	customContextMenuRequested (const QPoint &pos)
	This signal is emitted when the widget's contextMenuPolicy is Qt::CustomContextMenu, and the user has requested a context menu on the widget. More...

Signals inherited from QObject
void	destroyed (QObject *=0)
	This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...

Public Functions
Qt::Alignment	alignment () const

void	backspace ()
	If no text is selected, deletes the character to the left of the text cursor and moves the cursor one position to the left. More...

QCompleter *	completer () const
	Returns the current QCompleter that provides completions. More...

QMenu *	createStandardContextMenu ()
	This function creates the standard context menu which is shown when the user clicks on the line edit with the right mouse button. More...

void	cursorBackward (bool mark, int steps=1)
	Moves the cursor back steps characters. More...

void	cursorForward (bool mark, int steps=1)
	Moves the cursor forward steps characters. More...

Qt::CursorMoveStyle	cursorMoveStyle () const

int	cursorPosition () const

int	cursorPositionAt (const QPoint &pos)
	Returns the cursor position under the point pos. More...

void	cursorWordBackward (bool mark)
	Moves the cursor one word backward. More...

void	cursorWordForward (bool mark)
	Moves the cursor one word forward. More...

void	del ()
	If no text is selected, deletes the character to the right of the text cursor. More...

void	deselect ()
	Deselects any selected text. More...

QString	displayText () const

bool	dragEnabled () const

EchoMode	echoMode () const

void	end (bool mark)
	Moves the text cursor to the end of the line unless it is already there. More...

bool	event (QEvent *)
	Reimplemented Function More...

void	getTextMargins (int left, int top, int right, int bottom) const
	Returns the widget's text margins for left, top, right, and bottom. More...

bool	hasAcceptableInput () const

bool	hasFrame () const

bool	hasSelectedText () const

void	home (bool mark)
	Moves the text cursor to the beginning of the line unless it is already there. More...

QString	inputMask () const

QVariant	inputMethodQuery (Qt::InputMethodQuery) const
	em>Reimplemented Function More...

void	insert (const QString &)
	Deletes any selected text, inserts newText, and validates the result. More...

bool	isModified () const

bool	isReadOnly () const

bool	isRedoAvailable () const

bool	isUndoAvailable () const

int	maxLength () const

QSize	minimumSizeHint () const
	Returns a minimum size for the line edit. More...

QString	placeholderText () const

	QLineEdit (QWidget *parent=0)
	Constructs a line edit with no text. More...

	QLineEdit (const QString &, QWidget *parent=0)
	Constructs a line edit containing the text contents. More...

QString	selectedText () const

int	selectionStart () const
	selectionStart() returns the index of the first selected character in the line edit or -1 if no text is selected. More...

void	setAlignment (Qt::Alignment flag)

void	setCompleter (QCompleter *completer)
	Sets this line edit to provide auto completions from the completer, c. More...

void	setCursorMoveStyle (Qt::CursorMoveStyle style)
	Sets the movement style for the cursor in the line edit to the given style. More...

void	setCursorPosition (int)

void	setDragEnabled (bool b)

void	setEchoMode (EchoMode)

void	setFrame (bool)

void	setInputMask (const QString &inputMask)

void	setMaxLength (int)

void	setModified (bool)

void	setPlaceholderText (const QString &)

void	setReadOnly (bool)

void	setSelection (int, int)
	Selects text from position start and for length characters. More...

void	setTextMargins (int left, int top, int right, int bottom)
	Sets the margins around the text inside the frame to have the sizes left, top, right, and bottom. More...

void	setTextMargins (const QMargins &margins)
	Sets the margins around the text inside the frame. More...

void	setValidator (const QValidator *)
	Sets this line edit to only accept input that the validator, v, will accept. More...

QSize	sizeHint () const
	Returns a recommended size for the widget. More...

QString	text () const

QMargins	textMargins () const
	Returns the widget's text margins. More...

const QValidator *	validator () const
	Returns a pointer to the current input validator, or 0 if no validator has been set. More...

	~QLineEdit ()
	Destroys the line edit. More...

Public Functions inherited from QWidget
bool	acceptDrops () const

QString	accessibleDescription () const

QString	accessibleName () const

QList< QAction * >	actions () const
	Returns the (possibly empty) list of this widget's actions. More...

void	activateWindow ()
	Sets the top-level widget containing this widget to be the active window. More...

void	addAction (QAction *action)
	Appends the action action to this widget's list of actions. More...

void	addActions (QList< QAction *> actions)
	Appends the actions actions to this widget's list of actions. More...

void	adjustSize ()
	Adjusts the size of the widget to fit its contents. More...

bool	autoFillBackground () const

QPalette::ColorRole	backgroundRole () const
	Returns the background role of the widget. More...

QSize	baseSize () const

QWidget *	childAt (int x, int y) const
	Returns the visible child widget at the position ({x}, {y}) in the widget's coordinate system. More...

QWidget *	childAt (const QPoint &p) const
	Returns the visible child widget at point p in the widget's own coordinate system. More...

QRect	childrenRect () const

QRegion	childrenRegion () const

void	clearFocus ()
	Takes keyboard input focus from the widget. More...

void	clearMask ()
	Removes any mask set by setMask(). More...

QMargins	contentsMargins () const
	The contentsMargins function returns the widget's contents margins. More...

QRect	contentsRect () const
	Returns the area inside the widget's margins. More...

Qt::ContextMenuPolicy	contextMenuPolicy () const

void	createWinId ()

QCursor	cursor () const

int	devType () const

WId	effectiveWinId () const
	Returns the effective window system identifier of the widget, i. More...

void	ensurePolished () const
	Ensures that the widget has been polished by QStyle (i.e., has a proper font and palette). More...

Qt::FocusPolicy	focusPolicy () const

QWidget *	focusProxy () const
	Returns the focus proxy, or 0 if there is no focus proxy. More...

QWidget *	focusWidget () const
	Returns the last child of this widget that setFocus had been called on. More...

const QFont &	font () const

QFontInfo	fontInfo () const
	Returns the font info for the widget's current font. More...

QFontMetrics	fontMetrics () const
	Returns the font metrics for the widget's current font. More...

QPalette::ColorRole	foregroundRole () const
	Returns the foreground role. More...

QRect	frameGeometry () const

QSize	frameSize () const

const QRect &	geometry () const

void	getContentsMargins (int left, int top, int right, int bottom) const
	Returns the widget's contents margins for left, top, right, and bottom. More...

HDC	getDC () const
	Returns the window system handle of the widget, for low-level access. More...

void	grabGesture (Qt::GestureType type, Qt::GestureFlags flags=Qt::GestureFlags())
	Subscribes the widget to a given gesture with specific flags. More...

void	grabKeyboard ()
	Grabs the keyboard input. More...

void	grabMouse ()
	Grabs the mouse input. More...

void	grabMouse (const QCursor &)

int	grabShortcut (const QKeySequence &key, Qt::ShortcutContext context=Qt::WindowShortcut)
	Adds a shortcut to Qt's shortcut system that watches for the given key sequence in the given context. More...

QGraphicsEffect *	graphicsEffect () const
	The graphicsEffect function returns a pointer to the widget's graphics effect. More...

QGraphicsProxyWidget *	graphicsProxyWidget () const
	Returns the proxy widget for the corresponding embedded widget in a graphics view; otherwise returns 0. More...

bool	hasFocus () const

bool	hasMouseTracking () const

int	height () const

virtual int	heightForWidth (int) const
	Returns the preferred height for this widget, given the width w. More...

QInputContext *	inputContext ()
	This function returns the QInputContext for this widget. More...

Qt::InputMethodHints	inputMethodHints () const

void	insertAction (QAction before, QAction action)
	Inserts the action action to this widget's list of actions, before the action before. More...

void	insertActions (QAction before, QList< QAction > actions)
	Inserts the actions actions to this widget's list of actions, before the action before. More...

WId	internalWinId () const
	Returns the window system identifier of the widget, or 0 if the widget is not created yet. More...

bool	isActiveWindow () const

bool	isAncestorOf (const QWidget *child) const
	Returns true if this widget is a parent, (or grandparent and so on to any level), of the given child, and both widgets are within the same window; otherwise returns false. More...

bool	isEnabled () const

bool	isEnabledTo (QWidget *) const
	Returns true if this widget would become enabled if ancestor is enabled; otherwise returns false. More...

bool	isEnabledToTLW () const
	This function is deprecated. More...

bool	isFullScreen () const

bool	isHidden () const
	Returns true if the widget is hidden, otherwise returns false. More...

bool	isLeftToRight () const

bool	isMaximized () const

bool	isMinimized () const

bool	isModal () const

bool	isRightToLeft () const

bool	isTopLevel () const
	Use isWindow() instead. More...

bool	isVisible () const

bool	isVisibleTo (QWidget *) const
	Returns true if this widget would become visible if ancestor is shown; otherwise returns false. More...

bool	isWindow () const
	Returns true if the widget is an independent window, otherwise returns false. More...

bool	isWindowModified () const

QLayout *	layout () const
	Returns the layout manager that is installed on this widget, or 0 if no layout manager is installed. More...

Qt::LayoutDirection	layoutDirection () const

QLocale	locale () const

Qt::HANDLE	macCGHandle () const
	Returns the CoreGraphics handle of the widget. More...

Qt::HANDLE	macQDHandle () const
	Returns the QuickDraw handle of the widget. More...

QPoint	mapFrom (QWidget *, const QPoint &) const
	Translates the widget coordinate pos from the coordinate system of parent to this widget's coordinate system. More...

QPoint	mapFromGlobal (const QPoint &) const
	Translates the global screen coordinate pos to widget coordinates. More...

QPoint	mapFromParent (const QPoint &) const
	Translates the parent widget coordinate pos to widget coordinates. More...

QPoint	mapTo (QWidget *, const QPoint &) const
	Translates the widget coordinate pos to the coordinate system of parent. More...

QPoint	mapToGlobal (const QPoint &) const
	Translates the widget coordinate pos to global screen coordinates. More...

QPoint	mapToParent (const QPoint &) const
	Translates the widget coordinate pos to a coordinate in the parent widget. More...

QRegion	mask () const
	Returns the mask currently set on a widget. More...

int	maximumHeight () const

QSize	maximumSize () const

int	maximumWidth () const

int	minimumHeight () const

QSize	minimumSize () const

int	minimumWidth () const

void	move (int x, int y)
	This corresponds to move(QPoint(x, y)). More...

void	move (const QPoint &)

QWidget *	nativeParentWidget () const
	Returns the native parent for this widget, i. More...

QWidget *	nextInFocusChain () const
	Returns the next widget in this widget's focus chain. More...

QRect	normalGeometry () const

void	overrideWindowFlags (Qt::WindowFlags type)
	Sets the window flags for the widget to flags, without telling the window system. More...

void	overrideWindowState (Qt::WindowStates state)

QPaintEngine *	paintEngine () const
	Returns the widget's paint engine. More...

const QPalette &	palette () const

QWidget *	parentWidget () const
	Returns the parent of this widget, or 0 if it does not have any parent widget. More...

QPoint	pos () const

QWidget *	previousInFocusChain () const
	The previousInFocusChain function returns the previous widget in this widget's focus chain. More...

	QWidget (QWidget *parent=0, Qt::WindowFlags f=0)
	Constructs a widget which is a child of parent, with widget flags set to f. More...

QRect	rect () const

void	releaseDC (HDC) const
	Releases the HDC hdc acquired by a previous call to getDC(). More...

void	releaseKeyboard ()
	Releases the keyboard grab. More...

void	releaseMouse ()
	Releases the mouse grab. More...

void	releaseShortcut (int id)
	Removes the shortcut with the given id from Qt's shortcut system. More...

void	removeAction (QAction *action)
	Removes the action action from this widget's list of actions. More...

void	render (QPaintDevice *target, const QPoint &targetOffset=QPoint(), const QRegion &sourceRegion=QRegion(), RenderFlags renderFlags=RenderFlags(DrawWindowBackground\|DrawChildren))
	Renders the sourceRegion of this widget into the target using renderFlags to determine how to render. More...

void	render (QPainter *painter, const QPoint &targetOffset=QPoint(), const QRegion &sourceRegion=QRegion(), RenderFlags renderFlags=RenderFlags(DrawWindowBackground\|DrawChildren))
	Renders the widget into the painter's QPainter::device(). More...

void	repaint (int x, int y, int w, int h)
	This version repaints a rectangle (x, y, w, h) inside the widget. More...

void	repaint (const QRect &)
	This version repaints a rectangle rect inside the widget. More...

void	repaint (const QRegion &)
	This version repaints a region rgn inside the widget. More...

void	resize (int w, int h)
	This corresponds to resize(QSize(w, h)). More...

void	resize (const QSize &)

bool	restoreGeometry (const QByteArray &geometry)
	Restores the geometry and state top-level widgets stored in the byte array geometry. More...

QByteArray	saveGeometry () const
	Saves the current geometry and state for top-level widgets. More...

void	scroll (int dx, int dy)
	Scrolls the widget including its children dx pixels to the right and dy downward. More...

void	scroll (int dx, int dy, const QRect &)
	This version only scrolls r and does not move the children of the widget. More...

void	setAcceptDrops (bool on)

void	setAccessibleDescription (const QString &description)

void	setAccessibleName (const QString &name)

void	setAttribute (Qt::WidgetAttribute, bool on=true)
	Sets the attribute attribute on this widget if on is true; otherwise clears the attribute. More...

void	setAutoFillBackground (bool enabled)

void	setBackgroundRole (QPalette::ColorRole)
	Sets the background role of the widget to role. More...

void	setBaseSize (const QSize &)

void	setBaseSize (int basew, int baseh)
	This corresponds to setBaseSize(QSize(basew, baseh)). More...

void	setContentsMargins (int left, int top, int right, int bottom)
	Sets the margins around the contents of the widget to have the sizes left, top, right, and bottom. More...

void	setContentsMargins (const QMargins &margins)
	The setContentsMargins function sets the margins around the widget's contents. More...

void	setContextMenuPolicy (Qt::ContextMenuPolicy policy)

void	setCursor (const QCursor &)

void	setFixedHeight (int h)
	Sets both the minimum and maximum heights of the widget to h without changing the widths. More...

void	setFixedSize (const QSize &)
	Sets both the minimum and maximum sizes of the widget to s, thereby preventing it from ever growing or shrinking. More...

void	setFixedSize (int w, int h)
	Sets the width of the widget to w and the height to h. More...

void	setFixedWidth (int w)
	Sets both the minimum and maximum width of the widget to w without changing the heights. More...

void	setFocus (Qt::FocusReason reason)
	Gives the keyboard input focus to this widget (or its focus proxy) if this widget or one of its parents is the active window. More...

void	setFocusPolicy (Qt::FocusPolicy policy)

void	setFocusProxy (QWidget *)
	Sets the widget's focus proxy to widget w. More...

void	setFont (const QFont &)
	Use the single-argument overload instead. More...

void	setForegroundRole (QPalette::ColorRole)
	Sets the foreground role of the widget to role. More...

void	setGeometry (int x, int y, int w, int h)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.This corresponds to setGeometry(QRect(x, y, w, h)). More...

void	setGeometry (const QRect &)

void	setGraphicsEffect (QGraphicsEffect *effect)
	The setGraphicsEffect function is for setting the widget's graphics effect. More...

void	setInputContext (QInputContext *)
	This function sets the input context context on this widget. More...

void	setInputMethodHints (Qt::InputMethodHints hints)

void	setLayout (QLayout *)
	Sets the layout manager for this widget to layout. More...

void	setLayoutDirection (Qt::LayoutDirection direction)

void	setLocale (const QLocale &locale)

void	setMask (const QBitmap &)
	Causes only the pixels of the widget for which bitmap has a corresponding 1 bit to be visible. More...

void	setMask (const QRegion &)
	Causes only the parts of the widget which overlap region to be visible. More...

void	setMaximumHeight (int maxh)

void	setMaximumSize (const QSize &)

void	setMaximumSize (int maxw, int maxh)
	This function corresponds to setMaximumSize(QSize(maxw, maxh)). More...

void	setMaximumWidth (int maxw)

void	setMinimumHeight (int minh)

void	setMinimumSize (const QSize &)

void	setMinimumSize (int minw, int minh)
	This function corresponds to setMinimumSize(QSize(minw, minh)). More...

void	setMinimumWidth (int minw)

void	setMouseTracking (bool enable)

void	setPalette (const QPalette &)
	Use the single-argument overload instead. More...

void	setParent (QWidget *parent)
	Sets the parent of the widget to parent, and resets the window flags. More...

void	setParent (QWidget *parent, Qt::WindowFlags f)
	This function also takes widget flags, f as an argument. More...

void	setShortcutAutoRepeat (int id, bool enable=true)
	If enable is true, auto repeat of the shortcut with the given id is enabled; otherwise it is disabled. More...

void	setShortcutEnabled (int id, bool enable=true)
	If enable is true, the shortcut with the given id is enabled; otherwise the shortcut is disabled. More...

void	setSizeIncrement (const QSize &)

void	setSizeIncrement (int w, int h)
	Sets the x (width) size increment to w and the y (height) size increment to h. More...

void	setSizePolicy (QSizePolicy)

void	setSizePolicy (QSizePolicy::Policy horizontal, QSizePolicy::Policy vertical)
	Sets the size policy of the widget to horizontal and vertical, with standard stretch and no height-for-width. More...

void	setStatusTip (const QString &)

void	setStyle (QStyle *)
	Sets the widget's GUI style to style. More...

void	setToolTip (const QString &)

void	setUpdatesEnabled (bool enable)

void	setupUi (QWidget *widget)
	Sets up the user interface for the specified widget. More...

void	setWhatsThis (const QString &)

void	setWindowFilePath (const QString &filePath)

void	setWindowFlags (Qt::WindowFlags type)

void	setWindowIcon (const QIcon &icon)

void	setWindowIconText (const QString &)

void	setWindowModality (Qt::WindowModality windowModality)

void	setWindowOpacity (qreal level)

void	setWindowRole (const QString &)
	Sets the window's role to role. More...

void	setWindowState (Qt::WindowStates state)
	Sets the window state to windowState. More...

void	setWindowSurface (QWindowSurface *surface)
	Sets the window surface to be the surface specified. More...

QSize	size () const

QSize	sizeIncrement () const

QSizePolicy	sizePolicy () const

void	stackUnder (QWidget *)
	Places the widget under w in the parent widget's stack. More...

QString	statusTip () const

QStyle *	style () const

QString	styleSheet () const

bool	testAttribute (Qt::WidgetAttribute) const
	Returns true if attribute attribute is set on this widget; otherwise returns false. More...

QString	toolTip () const

QWidget *	topLevelWidget () const

bool	underMouse () const
	Returns true if the widget is under the mouse cursor; otherwise returns false. More...

void	ungrabGesture (Qt::GestureType type)
	Unsubscribes the widget from a given gesture type. More...

void	unsetCursor ()

void	unsetLayoutDirection ()

void	unsetLocale ()

void	update (int x, int y, int w, int h)
	This version updates a rectangle (x, y, w, h) inside the widget. More...

void	update (const QRect &)
	This version updates a rectangle rect inside the widget. More...

void	update (const QRegion &)
	This version repaints a region rgn inside the widget. More...

void	updateGeometry ()
	Notifies the layout system that this widget has changed and may need to change geometry. More...

bool	updatesEnabled () const

QRegion	visibleRegion () const
	Returns the unobscured region where paint events can occur. More...

QString	whatsThis () const

int	width () const

QWidget *	window () const
	Returns the window for this widget, i.e. More...

QString	windowFilePath () const

Qt::WindowFlags	windowFlags () const
	Window flags are a combination of a type (e. More...

QIcon	windowIcon () const

QString	windowIconText () const

Qt::WindowModality	windowModality () const

qreal	windowOpacity () const

QString	windowRole () const
	Returns the window's role, or an empty string. More...

Qt::WindowStates	windowState () const
	Returns the current window state. More...

QWindowSurface *	windowSurface () const
	Returns the QWindowSurface this widget will be drawn into. More...

QString	windowTitle () const

Qt::WindowType	windowType () const
	Returns the window type of this widget. More...

WId	winId () const
	Returns the window system identifier of the widget. More...

int	x () const

const QX11Info &	x11Info () const
	Returns information about the configuration of the X display used to display the widget. More...

Qt::HANDLE	x11PictureHandle () const
	Returns the X11 Picture handle of the widget for XRender support. More...

int	y () const

	~QWidget ()
	Destroys the widget. More...

Public Functions inherited from QObject
bool	blockSignals (bool b)
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...

const QObjectList &	children () const
	Returns a list of child objects. More...

bool	connect (const QObject sender, const char signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const

bool	disconnect (const char signal=0, const QObject receiver=0, const char *member=0)

bool	disconnect (const QObject receiver, const char member=0)

void	dumpObjectInfo ()
	Dumps information about signal connections, etc. More...

void	dumpObjectTree ()
	Dumps a tree of children to the debug output. More...

QList< QByteArray >	dynamicPropertyNames () const
	Returns the names of all properties that were dynamically added to the object using setProperty(). More...

virtual bool	eventFilter (QObject , QEvent )
	Filters events if this object has been installed as an event filter for the watched object. More...

template<typename T >
T	findChild (const QString &aName=QString()) const
	Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...

template<typename T >
QList< T >	findChildren (const QString &aName=QString()) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects. More...

template<typename T >
QList< T >	findChildren (const QRegExp &re) const

bool	inherits (const char *classname) const
	Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false. More...

void	installEventFilter (QObject *)
	Installs an event filter filterObj on this object. More...

bool	isWidgetType () const
	Returns true if the object is a widget; otherwise returns false. More...

void	killTimer (int id)
	Kills the timer with timer identifier, id. More...

virtual const QMetaObject *	metaObject () const
	Returns a pointer to the meta-object of this object. More...

void	moveToThread (QThread *thread)
	Changes the thread affinity for this object and its children. More...

QString	objectName () const

QObject *	parent () const
	Returns a pointer to the parent object. More...

QVariant	property (const char *name) const
	Returns the value of the object's name property. More...

Q_INVOKABLE	QObject (QObject *parent=0)
	Constructs an object with parent object parent. More...

void	removeEventFilter (QObject *)
	Removes an event filter object obj from this object. More...

void	setObjectName (const QString &name)

void	setParent (QObject *)
	Makes the object a child of parent. More...

bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value. More...

void	setUserData (uint id, QObjectUserData *data)

bool	signalsBlocked () const
	Returns true if signals are blocked; otherwise returns false. More...

int	startTimer (int interval)
	Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...

QThread *	thread () const
	Returns the thread in which the object lives. More...

QObjectUserData *	userData (uint id) const

virtual	~QObject ()
	Destroys the object, deleting all its child objects. More...

Public Functions inherited from QPaintDevice
int	colorCount () const

int	depth () const

int	height () const

int	heightMM () const

int	logicalDpiX () const

int	logicalDpiY () const

QT_DEPRECATED int	numColors () const

bool	paintingActive () const

int	physicalDpiX () const

int	physicalDpiY () const

int	width () const

int	widthMM () const

virtual	~QPaintDevice ()

Protected Functions
void	changeEvent (QEvent *)
	Reimplemented Function More...

void	contextMenuEvent (QContextMenuEvent *)
	Shows the standard context menu created with createStandardContextMenu(). More...

QRect	cursorRect () const
	Returns a rectangle that includes the lineedit cursor. More...

void	dragEnterEvent (QDragEnterEvent *)
	em>Reimplemented Function More...

void	dragLeaveEvent (QDragLeaveEvent *e)
	em>Reimplemented Function More...

void	dragMoveEvent (QDragMoveEvent *e)
	em>Reimplemented Function More...

void	dropEvent (QDropEvent *)
	This event handler is called when the drag is dropped on this widget. More...

void	focusInEvent (QFocusEvent *)
	em>Reimplemented Function More...

void	focusOutEvent (QFocusEvent *)
	em>Reimplemented Function More...

void	initStyleOption (QStyleOptionFrame *option) const
	Initialize option with the values from this QLineEdit. More...

void	inputMethodEvent (QInputMethodEvent *)
	Reimplemented Function More...

void	keyPressEvent (QKeyEvent *)
	Converts the given key press event into a line edit action. More...

void	mouseDoubleClickEvent (QMouseEvent *)
	Reimplemented Function More...

void	mouseMoveEvent (QMouseEvent *)
	Reimplemented Function More...

void	mousePressEvent (QMouseEvent *)
	Reimplemented Function More...

void	mouseReleaseEvent (QMouseEvent *)
	Reimplemented Function More...

void	paintEvent (QPaintEvent *)
	em>Reimplemented Function More...

Protected Functions inherited from QWidget
virtual void	actionEvent (QActionEvent *)
	This event handler is called with the given event whenever the widget's actions are changed. More...

virtual void	closeEvent (QCloseEvent *)
	This event handler is called with the given event when Qt receives a window close request for a top-level widget from the window system. More...

void	create (WId=0, bool initializeWindow=true, bool destroyOldWindow=true)
	Creates a new widget window if window is 0, otherwise sets the widget's window to window. More...

void	destroy (bool destroyWindow=true, bool destroySubWindows=true)
	Frees up window system resources. More...

virtual void	enabledChange (bool)

virtual void	enterEvent (QEvent *)
	This event handler can be reimplemented in a subclass to receive widget enter events which are passed in the event parameter. More...

bool	focusNextChild ()
	Finds a new widget to give the keyboard focus to, as appropriate for Tab, and returns true if it can find a new widget, or false if it can't. More...

virtual bool	focusNextPrevChild (bool next)
	Finds a new widget to give the keyboard focus to, as appropriate for Tab and Shift+Tab, and returns true if it can find a new widget, or false if it can't. More...

bool	focusPreviousChild ()
	Finds a new widget to give the keyboard focus to, as appropriate for Shift+Tab, and returns true if it can find a new widget, or false if it can't. More...

virtual void	fontChange (const QFont &)

virtual void	hideEvent (QHideEvent *)
	This event handler can be reimplemented in a subclass to receive widget hide events. More...

virtual void	keyReleaseEvent (QKeyEvent *)
	This event handler, for event event, can be reimplemented in a subclass to receive key release events for the widget. More...

virtual void	languageChange ()

virtual void	leaveEvent (QEvent *)
	This event handler can be reimplemented in a subclass to receive widget leave events which are passed in the event parameter. More...

virtual bool	macEvent (EventHandlerCallRef, EventRef)
	This special event handler can be reimplemented in a subclass to receive native Macintosh events. More...

int	metric (PaintDeviceMetric) const
	Internal implementation of the virtual QPaintDevice::metric() function. More...

virtual void	moveEvent (QMoveEvent *)
	This event handler can be reimplemented in a subclass to receive widget move events which are passed in the event parameter. More...

virtual void	paletteChange (const QPalette &)

	QWidget (QWidgetPrivate &d, QWidget *parent, Qt::WindowFlags f)

virtual bool	qwsEvent (QWSEvent *)
	This special event handler can be reimplemented in a subclass to receive native Qt for Embedded Linux events which are passed in the event parameter. More...

void	resetInputContext ()
	This function can be called on the widget that currently has focus to reset the input method operating on it. More...

virtual void	resizeEvent (QResizeEvent *)
	This event handler can be reimplemented in a subclass to receive widget resize events which are passed in the event parameter. More...

virtual void	showEvent (QShowEvent *)
	This event handler can be reimplemented in a subclass to receive widget show events which are passed in the event parameter. More...

virtual void	styleChange (QStyle &)

virtual void	tabletEvent (QTabletEvent *)
	This event handler, for event event, can be reimplemented in a subclass to receive tablet events for the widget. More...

virtual void	wheelEvent (QWheelEvent *)
	This event handler, for event event, can be reimplemented in a subclass to receive wheel events for the widget. More...

virtual void	windowActivationChange (bool)

virtual bool	winEvent (MSG message, long result)
	This special event handler can be reimplemented in a subclass to receive native Windows events which are passed in the message parameter. More...

virtual bool	x11Event (XEvent *)
	This special event handler can be reimplemented in a subclass to receive native X11 events passed in the event parameter. More...

Protected Functions inherited from QObject
virtual void	childEvent (QChildEvent *)
	This event handler can be reimplemented in a subclass to receive child events. More...

virtual void	connectNotify (const char *signal)
	This virtual function is called when something has been connected to signal in this object. More...

virtual void	customEvent (QEvent *)
	This event handler can be reimplemented in a subclass to receive custom events. More...

virtual void	disconnectNotify (const char *signal)
	This virtual function is called when something has been disconnected from signal in this object. More...

	QObject (QObjectPrivate &dd, QObject *parent=0)

int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal. More...

QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns 0. More...

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *)
	This event handler can be reimplemented in a subclass to receive timer events for the object. More...

Protected Functions inherited from QPaintDevice
	QPaintDevice ()

Properties
bool	acceptableInput
	whether the input satisfies the inputMask and the validator. More...

Qt::Alignment	alignment
	the alignment of the line edit More...

Qt::CursorMoveStyle	cursorMoveStyle
	the movement style of cursor in this line edit More...

int	cursorPosition
	the current cursor position for this line edit More...

QString	displayText
	the displayed text More...

bool	dragEnabled
	whether the lineedit starts a drag if the user presses and moves the mouse on some selected text More...

EchoMode	echoMode
	the line edit's echo mode More...

bool	frame
	whether the line edit draws itself with a frame More...

bool	hasSelectedText
	whether there is any text selected More...

QString	inputMask
	The validation input mask. More...

int	maxLength
	the maximum permitted length of the text More...

bool	modified
	whether the line edit's contents has been modified by the user More...

QString	placeholderText
	the line edit's placeholder text More...

bool	readOnly
	whether the line edit is read only. More...

bool	redoAvailable
	whether redo is available More...

QString	selectedText
	the selected text More...

QString	text
	the line edit's text More...

bool	undoAvailable
	whether undo is available More...

Friends
class	QAbstractSpinBox

class	QAccessibleLineEdit

Additional Inherited Members
Static Public Functions inherited from QWidget
static QWidget *	find (WId)
	Returns a pointer to the widget with window identifer/handle id. More...

static QWidget *	keyboardGrabber ()
	Returns the widget that is currently grabbing the keyboard input. More...

static QWidget *	mouseGrabber ()
	Returns the widget that is currently grabbing the mouse input. More...

static void	setTabOrder (QWidget , QWidget )
	Puts the second widget after the first widget in the focus order. More...

Static Public Functions inherited from QObject
static bool	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...

static bool	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	Disconnects signal in object sender from method in object receiver. More...

static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)

static uint	registerUserData ()

static QString	tr (const char sourceText, const char comment=0, int n=-1)

static QString	trUtf8 (const char sourceText, const char comment=0, int n=-1)

Static Public Functions inherited from QPaintDevice
static QWSDisplay *	qwsDisplay ()

Static Public Variables inherited from QObject
static const QMetaObject	staticMetaObject
	This variable stores the meta-object for the class. More...

Protected Slots inherited from QWidget
void	updateMicroFocus ()
	Updates the widget's micro focus. More...

Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Protected Variables inherited from QPaintDevice
ushort	painters

Static Protected Variables inherited from QObject
static const QMetaObject	staticQtMetaObject

Related Functions inherited from QWidget
	QWidgetList

	WId
	Platform dependent window identifier. More...

Related Functions inherited from QObject
T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QRegExp &regExp)()

T *	qobject_cast (QObject *object)

	QObjectList

void *	qt_find_obj_child (QObject parent, const char type, const QString &name)
	Returns a pointer to the object named name that inherits type and with a given parent. More...

Related Functions inherited from QPaintDevice
const Q_GUI_EXPORT QX11Info *	qt_x11Info (const QPaintDevice *pd)
	Returns the QX11Info structure for the pd paint device. More...

Detailed Description

The QLineEdit widget is a one-line text editor.

A line edit allows the user to enter and edit a single line of plain text with a useful collection of editing functions, including undo and redo, cut and paste, and drag and drop.

By changing the echoMode() of a line edit, it can also be used as a "write-only" field, for inputs such as passwords.

The length of the text can be constrained to maxLength(). The text can be arbitrarily constrained using a validator() or an inputMask(), or both. When switching between a validator and an input mask on the same line edit, it is best to clear the validator or input mask to prevent undefined behavior.

A related class is QTextEdit which allows multi-line, rich text editing.

You can change the text with setText() or insert(). The text is retrieved with text(); the displayed text (which may be different, see EchoMode) is retrieved with displayText(). Text can be selected with setSelection() or selectAll(), and the selection can be cut(), copy()ied and paste()d. The text can be aligned with setAlignment().

When the text changes the textChanged() signal is emitted; when the text changes other than by calling setText() the textEdited() signal is emitted; when the cursor is moved the cursorPositionChanged() signal is emitted; and when the Return or Enter key is pressed the returnPressed() signal is emitted.

When editing is finished, either because the line edit lost focus or Return/Enter is pressed the editingFinished() signal is emitted.

Note that if there is a validator set on the line edit, the returnPressed()/editingFinished() signals will only be emitted if the validator returns QValidator::Acceptable.

By default, QLineEdits have a frame as specified by the Windows and Motif style guides; you can turn it off by calling setFrame(false).

The default key bindings are described below. The line edit also provides a context menu (usually invoked by a right mouse click) that presents some of these editing options.

Keypress	Action
Left Arrow	Moves the cursor one character to the left.
Shift+Left Arrow	Moves and selects text one character to the left.
Right Arrow	Moves the cursor one character to the right.
Shift+Right Arrow	Moves and selects text one character to the right.
Home	Moves the cursor to the beginning of the line.
End	Moves the cursor to the end of the line.
Backspace	Deletes the character to the left of the cursor.
Ctrl+Backspace	Deletes the word to the left of the cursor.
Delete	Deletes the character to the right of the cursor.
Ctrl+Delete	Deletes the word to the right of the cursor.
Ctrl+A	Select all.
Ctrl+C	Copies the selected text to the clipboard.
Ctrl+Insert	Copies the selected text to the clipboard.
Ctrl+K	Deletes to the end of the line.
Ctrl+V	Pastes the clipboard text into line edit.
Shift+Insert	Pastes the clipboard text into line edit.
Ctrl+X	Deletes the selected text and copies it to the clipboard.
Shift+Delete	Deletes the selected text and copies it to the clipboard.
Ctrl+Z	Undoes the last operation.
Ctrl+Y	Redoes the last undone operation.

Any other key sequence that represents a valid character, will cause the character to be inserted into the line edit.

Screenshot of a Macintosh style line edit	A line edit shown in the Macintosh Style Widget Gallery{Macintosh widget style}.
Screenshot of a Windows XP style line edit	A line edit shown in the Windows XP Style Widget Gallery{Windows XP widget style}.
Screenshot of a Plastique style line edit	A line edit shown in the Plastique Style Widget Gallery{Plastique widget style}.

See also: QTextEdit, QLabel, QComboBox, {fowler}{GUI Design Handbook: Field, Entry}, {Line Edits Example}

Definition at line 66 of file qlineedit.h.

Enumerations

◆ EchoMode

enum QLineEdit::EchoMode

This enum type describes how a line edit should display its contents.

Normal Display characters as they are entered. This is the default.
NoEcho Do not display anything. This may be appropriate for passwords where even the length of the password should be kept secret.
Password Display asterisks instead of the characters actually entered.
PasswordEchoOnEdit Display characters as they are entered while editing otherwise display asterisks.

See also: setEchoMode() echoMode()

Enumerator
Normal
NoEcho
Password
PasswordEchoOnEdit

Definition at line 113 of file qlineedit.h.

113 { Normal, NoEcho, Password, PasswordEchoOnEdit };

QLineEdit::NoEcho

Definition: qlineedit.h:113

QLineEdit::PasswordEchoOnEdit

Definition: qlineedit.h:113

QLineEdit::Normal

Definition: qlineedit.h:113

QLineEdit::Password

Definition: qlineedit.h:113

Constructors and Destructors

◆ QLineEdit() [1/2]

QLineEdit::QLineEdit ( QWidget * parent = 0 )

explicit

Constructs a line edit with no text.

The maximum text length is set to 32767 characters.

The parent argument is sent to the QWidget constructor.

See also: setText(), setMaxLength()

Definition at line 280 of file qlineedit.cpp.

Referenced by QLineEdit().

     : QWidget(*new QLineEditPrivate, parent,0)
 {
     Q_D(QLineEdit);
     d->init(QString());
 }

◆ QLineEdit() [2/2]

QLineEdit::QLineEdit	(	const QString &	contents,
		QWidget *	parent = `0`
	)

explicit

Constructs a line edit containing the text contents.

The cursor position is set to the end of the line and the maximum text length to 32767 characters.

The parent and argument is sent to the QWidget constructor.

See also: text(), setMaxLength()

Definition at line 298 of file qlineedit.cpp.

     : QWidget(*new QLineEditPrivate, parent, 0)
 {
     Q_D(QLineEdit);
     d->init(contents);
 }

◆ ~QLineEdit()

QLineEdit::~QLineEdit ( )

Destroys the line edit.

Definition at line 372 of file qlineedit.cpp.

373 {

374 }

Functions

◆ alignment()

Qt::Alignment QLineEdit::alignment ( ) const

Referenced by cursorPositionAt(), and setAlignment().

◆ backspace()

void QLineEdit::backspace ( )

If no text is selected, deletes the character to the left of the text cursor and moves the cursor one position to the left.

If any text is selected, the cursor is moved to the beginning of the selected text and the selected text is deleted.

See also: del()

Definition at line 896 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     d->control->backspace();
 }

◆ changeEvent()

void QLineEdit::changeEvent ( QEvent * ev )

protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 2299 of file qlineedit.cpp.

Referenced by QExpandingLineEdit::changeEvent().

 {
     Q_D(QLineEdit);
     switch(ev->type())
     {
     case QEvent::ActivationChange:
         if (!palette().isEqual(QPalette::Active, QPalette::Inactive))
             update();
         break;
     case QEvent::FontChange:
         d->control->setFont(font());
         break;
     case QEvent::StyleChange:
         {
             QStyleOptionFrameV2 opt;
             initStyleOption(&opt);
             d->control->setPasswordCharacter(style()->styleHint(QStyle::SH_LineEdit_PasswordCharacter, &opt, this));
         }
         update();
         break;
     default:
         break;
     }
     QWidget::changeEvent(ev);
 }

◆ clear

void QLineEdit::clear ( )

slot

Clears the contents of the line edit.

See also: setText(), insert()

Definition at line 1443 of file qlineedit.cpp.

Referenced by QFileDialogPrivate::_q_enterDirectory(), inputMethodEvent(), and QScriptNewBreakpointWidget::onOkClicked().

 {
     Q_D(QLineEdit);
     resetInputContext();
     d->control->clear();
 }

◆ completer()

QCompleter * QLineEdit::completer ( ) const

Returns the current QCompleter that provides completions.

Since: 4.2

Definition at line 686 of file qlineedit.cpp.

Referenced by QComboBoxPrivate::matchFlags().

 {
     Q_D(const QLineEdit);
     return d->control->completer();
 }

◆ contextMenuEvent()

void QLineEdit::contextMenuEvent ( QContextMenuEvent * event )

protectedvirtual

Shows the standard context menu created with createStandardContextMenu().

If you do not want the line edit to have a context menu, you can set its contextMenuPolicy to Qt::NoContextMenu. If you want to customize the context menu, reimplement this function. If you want to extend the standard context menu, reimplement this function, call createStandardContextMenu() and extend the menu returned.

void LineEdit::contextMenuEvent(QContextMenuEvent *event)
{
    QMenu *menu = createStandardContextMenu();
    menu->addAction(tr("My Menu Item"));
    //...
    menu->exec(event->globalPos());
    delete menu;
}

The event parameter is used to obtain the position where the mouse cursor was when the event was generated.

See also: setContextMenuPolicy()

Reimplemented from QWidget.

Definition at line 2205 of file qlineedit.cpp.

 {
     if (QMenu *menu = createStandardContextMenu()) {
         menu->setAttribute(Qt::WA_DeleteOnClose);
         menu->popup(event->globalPos());
     }
 }

◆ copy

void QLineEdit::copy ( ) const

slot

Copies the selected text to the clipboard, if there is any, and if echoMode() is Normal .

See also: cut() paste()

Definition at line 1541 of file qlineedit.cpp.

Referenced by createStandardContextMenu(), and cut().

 {
     Q_D(const QLineEdit);
     d->control->copy();
 }

◆ createStandardContextMenu()

QMenu * QLineEdit::createStandardContextMenu ( )

This function creates the standard context menu which is shown when the user clicks on the line edit with the right mouse button.

It is called from the default contextMenuEvent() handler. The popup menu's ownership is transferred to the caller.

Definition at line 2223 of file qlineedit.cpp.

Referenced by contextMenuEvent().

 {
     Q_D(QLineEdit);
     QMenu *popup = new QMenu(this);
     popup->setObjectName(QLatin1String("qt_edit_menu"));
     QAction *action = 0;
 
     if (!isReadOnly()) {
         action = popup->addAction(QLineEdit::tr("&Undo") + ACCEL_KEY(QKeySequence::Undo));
         action->setEnabled(d->control->isUndoAvailable());
         connect(action, SIGNAL(triggered()), SLOT(undo()));
 
         action = popup->addAction(QLineEdit::tr("&Redo") + ACCEL_KEY(QKeySequence::Redo));
         action->setEnabled(d->control->isRedoAvailable());
         connect(action, SIGNAL(triggered()), SLOT(redo()));
 
         popup->addSeparator();
     }
 
 #ifndef QT_NO_CLIPBOARD
     if (!isReadOnly()) {
         action = popup->addAction(QLineEdit::tr("Cu&t") + ACCEL_KEY(QKeySequence::Cut));
         action->setEnabled(!d->control->isReadOnly() && d->control->hasSelectedText()
                 && d->control->echoMode() == QLineEdit::Normal);
         connect(action, SIGNAL(triggered()), SLOT(cut()));
     }
 
     action = popup->addAction(QLineEdit::tr("&Copy") + ACCEL_KEY(QKeySequence::Copy));
     action->setEnabled(d->control->hasSelectedText()
             && d->control->echoMode() == QLineEdit::Normal);
     connect(action, SIGNAL(triggered()), SLOT(copy()));
 
     if (!isReadOnly()) {
         action = popup->addAction(QLineEdit::tr("&Paste") + ACCEL_KEY(QKeySequence::Paste));
         action->setEnabled(!d->control->isReadOnly() && !QApplication::clipboard()->text().isEmpty());
         connect(action, SIGNAL(triggered()), SLOT(paste()));
     }
 #endif
 
     if (!isReadOnly()) {
         action = popup->addAction(QLineEdit::tr("Delete"));
         action->setEnabled(!d->control->isReadOnly() && !d->control->text().isEmpty() && d->control->hasSelectedText());
         connect(action, SIGNAL(triggered()), d->control, SLOT(_q_deleteSelected()));
     }
 
     if (!popup->isEmpty())
         popup->addSeparator();
 
     action = popup->addAction(QLineEdit::tr("Select All") + ACCEL_KEY(QKeySequence::SelectAll));
     action->setEnabled(!d->control->text().isEmpty() && !d->control->allSelected());
     d->selectAllAction = action;
     connect(action, SIGNAL(triggered()), SLOT(selectAll()));
 
 #if !defined(QT_NO_IM)
     QInputContext *qic = inputContext();
     if (qic) {
         QList<QAction *> imActions = qic->actions();
         for (int i = 0; i < imActions.size(); ++i)
             popup->addAction(imActions.at(i));
     }
 #endif
 
 #if defined(Q_WS_WIN) || defined(Q_WS_X11)
     if (!d->control->isReadOnly() && qt_use_rtl_extensions) {
 #else
     if (!d->control->isReadOnly()) {
 #endif
         popup->addSeparator();
         QUnicodeControlCharacterMenu *ctrlCharacterMenu = new QUnicodeControlCharacterMenu(this, popup);
         popup->addMenu(ctrlCharacterMenu);
     }
     return popup;
 }

◆ cursorBackward()

void QLineEdit::cursorBackward	(	bool	mark,
		int	steps = `1`
	)

Moves the cursor back steps characters.

If mark is true each character moved over is added to the selection; if mark is false the selection is cleared.

See also: cursorForward()

Definition at line 857 of file qlineedit.cpp.

 {
     cursorForward(mark, -steps);
 }

◆ cursorForward()

void QLineEdit::cursorForward	(	bool	mark,
		int	steps = `1`
	)

Moves the cursor forward steps characters.

If mark is true each character moved over is added to the selection; if mark is false the selection is cleared.

See also: cursorBackward()

Definition at line 843 of file qlineedit.cpp.

Referenced by cursorBackward().

 {
     Q_D(QLineEdit);
     d->control->cursorForward(mark, steps);
 }

◆ cursorMoveStyle()

Qt::CursorMoveStyle QLineEdit::cursorMoveStyle ( ) const

Referenced by setDragEnabled().

◆ cursorPosition()

int QLineEdit::cursorPosition ( ) const

Referenced by minimumSizeHint().

◆ cursorPositionAt()

int QLineEdit::cursorPositionAt ( const QPoint & pos )

Returns the cursor position under the point pos.

Definition at line 768 of file qlineedit.cpp.

Referenced by QAccessibleLineEdit::offsetAtPoint().

 {
     Q_D(QLineEdit);
     return d->xToPos(pos.x());
 }

◆ cursorPositionChanged

void QLineEdit::cursorPositionChanged	(	int	old,
		int	new
	)

signal

This signal is emitted whenever the cursor moves.

The previous position is given by old, and the new position by new.

See also: setCursorPosition(), cursorPosition()

◆ cursorRect()

QRect QLineEdit::cursorRect ( ) const

protected

Returns a rectangle that includes the lineedit cursor.

Since: 4.4

Definition at line 1825 of file qlineedit.cpp.

 {
     Q_D(const QLineEdit);
     return d->cursorRect();
 }

◆ cursorWordBackward()

void QLineEdit::cursorWordBackward ( bool mark )

Moves the cursor one word backward.

If mark is true, the word is also selected.

See also: cursorWordForward()

Definition at line 881 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     d->control->cursorWordBackward(mark);
 }

◆ cursorWordForward()

void QLineEdit::cursorWordForward ( bool mark )

Moves the cursor one word forward.

If mark is true, the word is also selected.

See also: cursorWordBackward()

Definition at line 868 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     d->control->cursorWordForward(mark);
 }

◆ cut

void QLineEdit::cut ( )

slot

Copies the selected text to the clipboard and deletes it, if there is any, and if echoMode() is Normal .

If the current validator disallows deleting the selected text, cut() will copy without deleting.

See also: copy() paste() setValidator()

Definition at line 1525 of file qlineedit.cpp.

Referenced by createStandardContextMenu().

 {
     if (hasSelectedText()) {
         copy();
         del();
     }
 }

◆ del()

void QLineEdit::del ( )

If no text is selected, deletes the character to the right of the text cursor.

If any text is selected, the cursor is moved to the beginning of the selected text and the selected text is deleted.

See also: backspace()

Definition at line 910 of file qlineedit.cpp.

Referenced by cut().

 {
     Q_D(QLineEdit);
     d->control->del();
 }

◆ deselect()

void QLineEdit::deselect ( )

Deselects any selected text.

See also: setSelection() selectAll()

Definition at line 1417 of file qlineedit.cpp.

Referenced by QComboBoxPrivate::_q_returnPressed(), dropEvent(), focusOutEvent(), mouseReleaseEvent(), and QAccessibleLineEdit::removeSelection().

 {
     Q_D(QLineEdit);
     d->control->deselect();
 }

◆ displayText()

QString QLineEdit::displayText ( ) const

Referenced by QExpandingLineEdit::resizeToContents(), and setPlaceholderText().

◆ dragEnabled()

bool QLineEdit::dragEnabled ( ) const

Referenced by isRedoAvailable().

◆ dragEnterEvent()

void QLineEdit::dragEnterEvent ( QDragEnterEvent * e )

protectedvirtual

em>Reimplemented Function

Reimplemented from QWidget.

Definition at line 2135 of file qlineedit.cpp.

◆ dragLeaveEvent()

void QLineEdit::dragLeaveEvent ( QDragLeaveEvent * e )

protectedvirtual

em>Reimplemented Function

Reimplemented from QWidget.

Definition at line 2141 of file qlineedit.cpp.

◆ dragMoveEvent()

void QLineEdit::dragMoveEvent ( QDragMoveEvent * e )

protectedvirtual

em>Reimplemented Function

Reimplemented from QWidget.

Definition at line 2123 of file qlineedit.cpp.

Referenced by dragEnterEvent().

◆ dropEvent()

void QLineEdit::dropEvent ( QDropEvent * event )

protectedvirtual

This event handler is called when the drag is dropped on this widget.

The event is passed in the event parameter.

See the Drag-and-drop documentation for an overview of how to provide drag-and-drop in your application.

See also: QDrag, QDropEvent

Reimplemented from QWidget.

Definition at line 2151 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     QString str = e->mimeData()->text();
 
     if (!str.isNull() && !d->control->isReadOnly()) {
         if (e->source() == this && e->dropAction() == Qt::CopyAction)
             deselect();
         int cursorPos = d->xToPos(e->pos().x());
         int selStart = cursorPos;
         int oldSelStart = d->control->selectionStart();
         int oldSelEnd = d->control->selectionEnd();
         d->control->moveCursor(cursorPos, false);
         d->cursorVisible = false;
         e->acceptProposedAction();
         insert(str);
         if (e->source() == this) {
             if (e->dropAction() == Qt::MoveAction) {
                 if (selStart > oldSelStart && selStart <= oldSelEnd)
                     setSelection(oldSelStart, str.length());
                 else if (selStart > oldSelEnd)
                     setSelection(selStart - str.length(), str.length());
                 else
                     setSelection(selStart, str.length());
             } else {
                 setSelection(selStart, str.length());
             }
         }
     } else {
         e->ignore();
         update();
     }
 }

◆ echoMode()

EchoMode QLineEdit::echoMode ( ) const

Referenced by inputMethodEvent(), and setFrame().

◆ editingFinished

void QLineEdit::editingFinished ( )

signal

This signal is emitted when the Return or Enter key is pressed or the line edit loses focus.

Note that if there is a validator() or inputMask() set on the line edit and enter/return is pressed, the editingFinished() signal will only be emitted if the input follows the inputMask() and the validator() returns QValidator::Acceptable.

Referenced by event(), and focusOutEvent().

◆ end()

void QLineEdit::end ( bool mark )

Moves the text cursor to the end of the line unless it is already there.

If mark is true, text is selected towards the last position; otherwise, any selected text is unselected if the cursor is moved.

See also: home()

Definition at line 940 of file qlineedit.cpp.

Referenced by QComboBoxPrivate::_q_returnPressed(), event(), and selectionStart().

 {
     Q_D(QLineEdit);
     d->control->end(mark);
 }

◆ event()

bool QLineEdit::event ( QEvent * e )

virtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 1568 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     if (e->type() == QEvent::Timer) {
         // should be timerEvent, is here for binary compatibility
         int timerId = ((QTimerEvent*)e)->timerId();
         if (false) {
 #ifndef QT_NO_DRAGANDDROP
         } else if (timerId == d->dndTimer.timerId()) {
             d->drag();
 #endif
         }
         else if (timerId == d->tripleClickTimer.timerId())
             d->tripleClickTimer.stop();
     } else if (e->type() == QEvent::ContextMenu) {
 #ifndef QT_NO_IM
         if (d->control->composeMode())
             return true;
 #endif
         //d->separate();
     } else if (e->type() == QEvent::WindowActivate) {
         QTimer::singleShot(0, this, SLOT(_q_handleWindowActivate()));
     }else if(e->type() == QEvent::ShortcutOverride){
         d->control->processEvent(e);
     } else if (e->type() == QEvent::KeyRelease) {
         d->control->setCursorBlinkPeriod(QApplication::cursorFlashTime());
     } else if (e->type() == QEvent::Show) {
         //In order to get the cursor blinking if QComboBox::setEditable is called when the combobox has focus
         if (hasFocus()) {
             d->control->setCursorBlinkPeriod(QApplication::cursorFlashTime());
             QStyleOptionFrameV2 opt;
             initStyleOption(&opt);
             if ((!hasSelectedText() && d->control->preeditAreaText().isEmpty())
                 || style()->styleHint(QStyle::SH_BlinkCursorWhenTextSelected, &opt, this))
                 d->setCursorVisible(true);
         }
     }
 
 #ifdef QT_KEYPAD_NAVIGATION
     if (QApplication::keypadNavigationEnabled()) {
         if (e->type() == QEvent::EnterEditFocus) {
             end(false);
             d->setCursorVisible(true);
             d->control->setCursorBlinkPeriod(QApplication::cursorFlashTime());
         } else if (e->type() == QEvent::LeaveEditFocus) {
             d->setCursorVisible(false);
             d->control->setCursorBlinkPeriod(0);
             if (d->control->hasAcceptableInput() || d->control->fixup())
                 emit editingFinished();
         }
     }
 #endif
     return QWidget::event(e);
 }

◆ focusInEvent()

void QLineEdit::focusInEvent ( QFocusEvent * e )

protectedvirtual

em>Reimplemented Function

Reimplemented from QWidget.

Definition at line 1900 of file qlineedit.cpp.

◆ focusOutEvent()

void QLineEdit::focusOutEvent ( QFocusEvent * e )

protectedvirtual

em>Reimplemented Function

Reimplemented from QWidget.

Definition at line 1949 of file qlineedit.cpp.

◆ getTextMargins()

void QLineEdit::getTextMargins	(	int *	left,
		int *	top,
		int *	right,
		int *	bottom
	)		const

Returns the widget's text margins for left, top, right, and bottom.

Since: 4.5

See also: setTextMargins()

Definition at line 1290 of file qlineedit.cpp.

Referenced by QAccessibleLineEdit::characterRect(), and QExpandingLineEdit::updateMinimumWidth().

 {
     Q_D(const QLineEdit);
     if (left)
         *left = d->leftTextMargin;
     if (top)
         *top = d->topTextMargin;
     if (right)
         *right = d->rightTextMargin;
     if (bottom)
         *bottom = d->bottomTextMargin;
 }

◆ hasAcceptableInput()

bool QLineEdit::hasAcceptableInput ( ) const

Definition at line 1246 of file qlineedit.cpp.

Referenced by cursorPositionAt(), focusOutEvent(), and QScriptNewBreakpointWidget::onTextChanged().

 {
     Q_D(const QLineEdit);
     return d->control->hasAcceptableInput();
 }

◆ hasFrame()

bool QLineEdit::hasFrame ( ) const

Definition at line 507 of file qlineedit.cpp.

 {
     Q_D(const QLineEdit);
     return d->frame;
 }

◆ hasSelectedText()

bool QLineEdit::hasSelectedText ( ) const

Referenced by cut(), event(), focusInEvent(), and setModified().

◆ home()

void QLineEdit::home ( bool mark )

Moves the text cursor to the beginning of the line unless it is already there.

If mark is true, text is selected towards the first position; otherwise, any selected text is unselected if the cursor is moved.

See also: end()

Definition at line 925 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     d->control->home(mark);
 }

◆ initStyleOption()

void QLineEdit::initStyleOption ( QStyleOptionFrame * option ) const

protected

Initialize option with the values from this QLineEdit.

This method is useful for subclasses when they need a QStyleOptionFrame or QStyleOptionFrameV2, but don't want to fill in all the information themselves. This function will check the version of the QStyleOptionFrame and fill in the additional values for a QStyleOptionFrameV2.

See also: QStyleOption::initFrom()

Definition at line 104 of file qlineedit.cpp.

Referenced by changeEvent(), event(), focusInEvent(), minimumSizeHint(), paintEvent(), setSelection(), sizeHint(), and QExpandingLineEdit::updateMinimumWidth().

 {
     if (!option)
         return;
 
     Q_D(const QLineEdit);
     option->initFrom(this);
     option->rect = contentsRect();
     option->lineWidth = d->frame ? style()->pixelMetric(QStyle::PM_DefaultFrameWidth, option, this)
                                  : 0;
     option->midLineWidth = 0;
     option->state |= QStyle::State_Sunken;
     if (d->control->isReadOnly())
         option->state |= QStyle::State_ReadOnly;
 #ifdef QT_KEYPAD_NAVIGATION
     if (hasEditFocus())
         option->state |= QStyle::State_HasEditFocus;
 #endif
     if (QStyleOptionFrameV2 *optionV2 = qstyleoption_cast<QStyleOptionFrameV2 *>(option))
         optionV2->features = QStyleOptionFrameV2::None;
 }

◆ inputMask()

QString QLineEdit::inputMask ( ) const

Referenced by QLineEdit(), and textMargins().

◆ inputMethodEvent()

void QLineEdit::inputMethodEvent ( QInputMethodEvent * e )

protectedvirtual

Reimplemented Function

em>Reimplemented Function

Reimplemented from QWidget.

Definition at line 1833 of file qlineedit.cpp.

◆ inputMethodQuery()

QVariant QLineEdit::inputMethodQuery ( Qt::InputMethodQuery property ) const

virtual

em>Reimplemented Function

Reimplemented from QWidget.

Definition at line 1869 of file qlineedit.cpp.

◆ insert()

void QLineEdit::insert ( const QString & newText )

Deletes any selected text, inserts newText, and validates the result.

If it is valid, it sets it as the new contents of the line edit.

See also: setText(), clear()

Definition at line 1431 of file qlineedit.cpp.

Referenced by dropEvent(), and mouseReleaseEvent().

 {
 //     q->resetInputContext(); //#### FIX ME IN QT
     Q_D(QLineEdit);
     d->control->insert(newText);
 }

◆ isModified()

bool QLineEdit::isModified ( ) const

Definition at line 968 of file qlineedit.cpp.

Referenced by QPrintDialogPrivate::_q_okClicked(), QPrintDialogPrivate::_q_printerOrFileSelected(), and selectionStart().

 {
     Q_D(const QLineEdit);
     return d->control->isModified();
 }

◆ isReadOnly()

bool QLineEdit::isReadOnly ( ) const

Definition at line 1493 of file qlineedit.cpp.

Referenced by createStandardContextMenu(), keyPressEvent(), mouseReleaseEvent(), and QAccessibleLineEdit::state().

 {
     Q_D(const QLineEdit);
     return d->control->isReadOnly();
 }

◆ isRedoAvailable()

bool QLineEdit::isRedoAvailable ( ) const

Definition at line 1156 of file qlineedit.cpp.

 {
     Q_D(const QLineEdit);
     return d->control->isRedoAvailable();
 }

◆ isUndoAvailable()

bool QLineEdit::isUndoAvailable ( ) const

Definition at line 1137 of file qlineedit.cpp.

 {
     Q_D(const QLineEdit);
     return d->control->isUndoAvailable();
 }

◆ keyPressEvent()

void QLineEdit::keyPressEvent ( QKeyEvent * event )

protectedvirtual

Converts the given key press event into a line edit action.

If Return or Enter is pressed and the current text is valid (or can be made valid by the validator), the signal returnPressed() is emitted.

The default key bindings are listed in the class's detailed description.

Reimplemented from QWidget.

Definition at line 1764 of file qlineedit.cpp.

Referenced by QFileDialogLineEdit::keyPressEvent().

 {
     Q_D(QLineEdit);
     #ifdef QT_KEYPAD_NAVIGATION
     bool select = false;
     switch (event->key()) {
         case Qt::Key_Select:
             if (QApplication::keypadNavigationEnabled()) {
                 if (hasEditFocus()) {
                     setEditFocus(false);
                     if (d->control->completer() && d->control->completer()->popup()->isVisible())
                         d->control->completer()->popup()->hide();
                     select = true;
                 }
             }
             break;
         case Qt::Key_Back:
         case Qt::Key_No:
             if (!QApplication::keypadNavigationEnabled() || !hasEditFocus()) {
                 event->ignore();
                 return;
             }
             break;
         default:
             if (QApplication::keypadNavigationEnabled()) {
                 if (!hasEditFocus() && !(event->modifiers() & Qt::ControlModifier)) {
                     if (!event->text().isEmpty() && event->text().at(0).isPrint()
                         && !isReadOnly())
                         setEditFocus(true);
                     else {
                         event->ignore();
                         return;
                     }
                 }
             }
     }
 
 
 
     if (QApplication::keypadNavigationEnabled() && !select && !hasEditFocus()) {
         setEditFocus(true);
         if (event->key() == Qt::Key_Select)
             return; // Just start. No action.
     }
 #endif
     d->control->processKeyEvent(event);
     if (event->isAccepted()) {
         if (layoutDirection() != d->control->layoutDirection())
             setLayoutDirection(d->control->layoutDirection());
         d->control->setCursorBlinkPeriod(0);
     }
 }

◆ maxLength()

int QLineEdit::maxLength ( ) const

Referenced by inputMethodQuery(), and setPlaceholderText().

◆ minimumSizeHint()

QSize QLineEdit::minimumSizeHint ( ) const

virtual

Returns a minimum size for the line edit.

The width returned is enough for at least one character.

Reimplemented from QWidget.

Definition at line 725 of file qlineedit.cpp.

 {
     Q_D(const QLineEdit);
     ensurePolished();
     QFontMetrics fm = fontMetrics();
     int h = fm.height() + qMax(2*d->verticalMargin, fm.leading())
             + d->topmargin + d->bottommargin;
     int w = fm.maxWidth() + d->leftmargin + d->rightmargin;
     QStyleOptionFrameV2 opt;
     initStyleOption(&opt);
     return (style()->sizeFromContents(QStyle::CT_LineEdit, &opt, QSize(w, h).
                                       expandedTo(QApplication::globalStrut()), this));
 }

◆ mouseDoubleClickEvent()

void QLineEdit::mouseDoubleClickEvent ( QMouseEvent * e )

protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 1715 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     if (d->sendMouseEventToInputContext(e))
         return;
     if (e->button() == Qt::LeftButton) {
         d->control->selectWordAtPos(d->xToPos(e->pos().x()));
         d->tripleClickTimer.start(QApplication::doubleClickInterval(), this);
         d->tripleClick = e->pos();
     }
 }

◆ mouseMoveEvent()

void QLineEdit::mouseMoveEvent ( QMouseEvent * e )

protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 1662 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     if (d->sendMouseEventToInputContext(e))
         return;
 
     if (e->buttons() & Qt::LeftButton) {
 #ifndef QT_NO_DRAGANDDROP
         if (d->dndTimer.isActive()) {
             if ((d->dndPos - e->pos()).manhattanLength() > QApplication::startDragDistance())
                 d->drag();
         } else
 #endif
         {
             d->control->moveCursor(d->xToPos(e->pos().x()), true);
         }
     }
 }

◆ mousePressEvent()

void QLineEdit::mousePressEvent ( QMouseEvent * e )

protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 1625 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     if (d->sendMouseEventToInputContext(e))
         return;
     if (e->button() == Qt::RightButton)
         return;
 #ifdef QT_KEYPAD_NAVIGATION
     if (QApplication::keypadNavigationEnabled() && !hasEditFocus()) {
         setEditFocus(true);
         // Get the completion list to pop up.
         if (d->control->completer())
             d->control->completer()->complete();
     }
 #endif
     if (d->tripleClickTimer.isActive() && (e->pos() - d->tripleClick).manhattanLength() <
          QApplication::startDragDistance()) {
         selectAll();
         return;
     }
     bool mark = e->modifiers() & Qt::ShiftModifier;
     int cursor = d->xToPos(e->pos().x());
 #ifndef QT_NO_DRAGANDDROP
     if (!mark && d->dragEnabled && d->control->echoMode() == Normal &&
          e->button() == Qt::LeftButton && d->control->inSelection(e->pos().x())) {
         d->dndPos = e->pos();
         if (!d->dndTimer.isActive())
             d->dndTimer.start(QApplication::startDragTime(), this);
     } else
 #endif
     {
         d->control->moveCursor(cursor, mark);
     }
 }

◆ mouseReleaseEvent()

void QLineEdit::mouseReleaseEvent ( QMouseEvent * e )

protectedvirtual

Reimplemented Function

Reimplemented from QWidget.

Definition at line 1683 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     if (d->sendMouseEventToInputContext(e))
         return;
 #ifndef QT_NO_DRAGANDDROP
     if (e->button() == Qt::LeftButton) {
         if (d->dndTimer.isActive()) {
             d->dndTimer.stop();
             deselect();
             return;
         }
     }
 #endif
 #ifndef QT_NO_CLIPBOARD
     if (QApplication::clipboard()->supportsSelection()) {
         if (e->button() == Qt::LeftButton) {
             d->control->copy(QClipboard::Selection);
         } else if (!d->control->isReadOnly() && e->button() == Qt::MidButton) {
             deselect();
             insert(QApplication::clipboard()->text(QClipboard::Selection));
         }
     }
 #endif
 
     if (!isReadOnly() && rect().contains(e->pos()))
         d->handleSoftwareInputPanel(e->button(), d->clickCausedFocus);
     d->clickCausedFocus = 0;
 }

◆ paintEvent()

void QLineEdit::paintEvent ( QPaintEvent * )

protectedvirtual

em>Reimplemented Function

Reimplemented from QWidget.

Definition at line 1994 of file qlineedit.cpp.

◆ paste

void QLineEdit::paste ( )

slot

Inserts the clipboard's text at the cursor position, deleting any selected text, providing the line edit is not read-only.

If the end result would not be acceptable to the current validator, nothing happens.

See also: copy() cut()

Definition at line 1558 of file qlineedit.cpp.

Referenced by createStandardContextMenu().

 {
     Q_D(QLineEdit);
     d->control->paste();
 }

◆ placeholderText()

QString QLineEdit::placeholderText ( ) const

Referenced by setPlaceholderText(), and setText().

◆ redo

void QLineEdit::redo ( )

slot

Redoes the last operation if redo is available.

Definition at line 1467 of file qlineedit.cpp.

Referenced by createStandardContextMenu().

 {
     Q_D(QLineEdit);
     resetInputContext();
     d->control->redo();
 }

◆ returnPressed

void QLineEdit::returnPressed ( )

signal

This signal is emitted when the Return or Enter key is pressed.

Note that if there is a validator() or inputMask() set on the line edit, the returnPressed() signal will only be emitted if the input follows the inputMask() and the validator() returns QValidator::Acceptable.

◆ selectAll

void QLineEdit::selectAll ( )

slot

Selects all the text (i.e.

highlights it) and moves the cursor to the end. This is useful when a default value has been inserted because if the user types before clicking on the widget, the selected text will be deleted.

See also: setSelection() deselect()

Definition at line 1405 of file qlineedit.cpp.

Referenced by QComboBoxPrivate::_q_itemSelected(), QPrintDialogPrivate::_q_printerOrFileSelected(), createStandardContextMenu(), focusInEvent(), mousePressEvent(), and QDateTimeEditPrivate::setSelected().

 {
     Q_D(QLineEdit);
     d->control->selectAll();
 }

◆ selectedText()

QString QLineEdit::selectedText ( ) const

Referenced by inputMethodQuery(), selectionStart(), and setModified().

◆ selectionChanged

void QLineEdit::selectionChanged ( )

signal

This signal is emitted whenever the selection changes.

See also: hasSelectedText(), selectedText()

◆ selectionStart()

int QLineEdit::selectionStart ( ) const

selectionStart() returns the index of the first selected character in the line edit or -1 if no text is selected.

See also: selectedText()

Definition at line 1039 of file qlineedit.cpp.

Referenced by QDateTimeEditPrivate::_q_editorCursorPositionChanged(), QAbstractSpinBoxPrivate::_q_editorCursorPositionChanged(), and QAccessibleLineEdit::selection().

 {
     Q_D(const QLineEdit);
     return d->control->selectionStart();
 }

◆ setAlignment()

void QLineEdit::setAlignment ( Qt::Alignment flag )

Definition at line 827 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     d->alignment = alignment;
     update();
 }

◆ setCompleter()

void QLineEdit::setCompleter ( QCompleter * c )

Sets this line edit to provide auto completions from the completer, c.

Since: 4.2

The completion mode is set using QCompleter::setCompletionMode().

To use a QCompleter with a QValidator or QLineEdit::inputMask, you need to ensure that the model provided to QCompleter contains valid entries. You can use the QSortFilterProxyModel to ensure that the QCompleter's model contains only valid entries.

If c == 0, setCompleter() removes the current completer, effectively disabling auto completion.

See also: QCompleter

Definition at line 654 of file qlineedit.cpp.

Referenced by QScriptNewBreakpointWidget::setCompleter().

 {
     Q_D(QLineEdit);
     if (c == d->control->completer())
         return;
     if (d->control->completer()) {
         disconnect(d->control->completer(), 0, this, 0);
         d->control->completer()->setWidget(0);
         if (d->control->completer()->parent() == this)
             delete d->control->completer();
     }
     d->control->setCompleter(c);
     if (!c)
         return;
     if (c->widget() == 0)
         c->setWidget(this);
     if (hasFocus()) {
         QObject::connect(d->control->completer(), SIGNAL(activated(QString)),
                          this, SLOT(setText(QString)));
         QObject::connect(d->control->completer(), SIGNAL(highlighted(QString)),
                          this, SLOT(_q_completionHighlighted(QString)));
     }
 }

◆ setCursorMoveStyle()

void QLineEdit::setCursorMoveStyle ( Qt::CursorMoveStyle style )

Sets the movement style for the cursor in the line edit to the given style.

Since: 4.8

Definition at line 1228 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     d->control->setCursorMoveStyle(style);
 }

◆ setCursorPosition()

void QLineEdit::setCursorPosition ( int pos )

Definition at line 758 of file qlineedit.cpp.

Referenced by QDateTimeEditPrivate::_q_editorCursorPositionChanged(), QAbstractSpinBoxPrivate::_q_editorCursorPositionChanged(), QPrintDialogPrivate::_q_printerOrFileSelected(), QDateTimeEditPrivate::clearSection(), QAbstractSpinBoxPrivate::interpret(), QAccessibleLineEdit::scrollToSubstring(), QAccessibleLineEdit::setCursorPosition(), QDateTimeEditPrivate::updateEdit(), and QAbstractSpinBoxPrivate::updateEdit().

 {
     Q_D(QLineEdit);
     d->control->setCursorPosition(pos);
 }

◆ setDragEnabled()

void QLineEdit::setDragEnabled ( bool b )

Definition at line 1179 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     d->dragEnabled = b;
 }

◆ setEchoMode()

void QLineEdit::setEchoMode ( EchoMode mode )

Definition at line 575 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     if (mode == (EchoMode)d->control->echoMode())
         return;
     Qt::InputMethodHints imHints = inputMethodHints();
     if (mode == Password || mode == NoEcho) {
         imHints |= Qt::ImhHiddenText;
     } else {
         imHints &= ~Qt::ImhHiddenText;
     }
     if (mode != Normal) {
         imHints |= (Qt::ImhNoAutoUppercase | Qt::ImhNoPredictiveText);
     } else {
         imHints &= ~(Qt::ImhNoAutoUppercase | Qt::ImhNoPredictiveText);
     }
     setInputMethodHints(imHints);
     d->control->setEchoMode(mode);
     update();
 #ifdef Q_WS_MAC
     if (hasFocus())
         qt_mac_secure_keyboard(mode == Password || mode == NoEcho);
 #endif
 }

◆ setFrame()

void QLineEdit::setFrame ( bool enable )

Definition at line 514 of file qlineedit.cpp.

Referenced by QDefaultItemEditorFactory::createEditor().

 {
     Q_D(QLineEdit);
     d->frame = enable;
     update();
     updateGeometry();
 }

◆ setInputMask()

void QLineEdit::setInputMask ( const QString & inputMask )

Definition at line 1390 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     d->control->setInputMask(inputMask);
 }

◆ setMaxLength()

void QLineEdit::setMaxLength ( int maxLength )

Definition at line 491 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     d->control->setMaxLength(maxLength);
 }

◆ setModified()

void QLineEdit::setModified ( bool modified )

Definition at line 974 of file qlineedit.cpp.

Referenced by QPrintDialogPrivate::_q_printerOrFileSelected(), selectionStart(), and QPrintDialogPrivate::setPrinter().

 {
     Q_D(QLineEdit);
     d->control->setModified(modified);
 }

◆ setPlaceholderText()

void QLineEdit::setPlaceholderText ( const QString & placeholderText )

Definition at line 430 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     if (d->placeholderText != placeholderText) {
         d->placeholderText = placeholderText;
         if (!hasFocus())
             update();
     }
 }

◆ setReadOnly()

void QLineEdit::setReadOnly ( bool enable )

Definition at line 1499 of file qlineedit.cpp.

 {
     Q_D(QLineEdit);
     if (d->control->isReadOnly() != enable) {
         d->control->setReadOnly(enable);
         setAttribute(Qt::WA_MacShowFocusRect, !enable);
         setAttribute(Qt::WA_InputMethodEnabled, d->shouldEnableInputMethod());
 #ifndef QT_NO_CURSOR
         setCursor(enable ? Qt::ArrowCursor : Qt::IBeamCursor);
 #endif
         update();
     }
 }

◆ setSelection()

void QLineEdit::setSelection	(	int	start,
		int	length
	)

Selects text from position start and for length characters.

Negative lengths are allowed.

See also: deselect() selectAll() selectedText()

Definition at line 1106 of file qlineedit.cpp.

Referenced by QAbstractSpinBoxPrivate::_q_editorCursorPositionChanged(), cursorPositionAt(), dropEvent(), QDateTimeEditPrivate::setSelected(), QAccessibleLineEdit::setSelection(), QDateTimeEditPrivate::updateEdit(), and QAbstractSpinBoxPrivate::updateEdit().

 {
     Q_D(QLineEdit);
     if (start < 0 || start > (int)d->control->text().length()) {
         qWarning("QLineEdit::setSelection: Invalid start position (%d)", start);
         return;
     }
 
     d->control->setSelection(start, length);
 
     if (d->control->hasSelectedText()){
         QStyleOptionFrameV2 opt;
         initStyleOption(&opt);
         if (!style()->styleHint(QStyle::SH_BlinkCursorWhenTextSelected, &opt, this))
             d->setCursorVisible(false);
     }
 }

◆ setText

void QLineEdit::setText ( const QString & text )

slot

Definition at line 401 of file qlineedit.cpp.

Referenced by QComboBoxPrivate::_q_dataChanged(), QFileDialogPrivate::_q_enterDirectory(), QFileDialogPrivate::_q_fileRenamed(), QComboBoxPrivate::_q_itemSelected(), QComboBoxPrivate::_q_modelReset(), QPrintDialogPrivate::_q_printerOrFileSelected(), QComboBoxPrivate::_q_rowsRemoved(), QFileDialogPrivate::_q_selectionChanged(), QFileDialogPrivate::_q_useNameFilter(), QDateTimeEditPrivate::clearSection(), cursorPositionAt(), focusInEvent(), setCompleter(), QComboBoxPrivate::setCurrentIndex(), QInputDialogPrivate::setInputWidget(), QComboBox::setLineEdit(), QPrintDialogPrivate::setPrinter(), QAccessibleLineEdit::setText(), QDateTimeEditPrivate::updateEdit(), and QAbstractSpinBoxPrivate::updateEdit().

 {
     Q_D(QLineEdit);
     d->control->setText(text);
 }

◆ setTextMargins() [1/2]

void QLineEdit::setTextMargins	(	int	left,
		int	top,
		int	right,
		int	bottom
	)

Sets the margins around the text inside the frame to have the sizes left, top, right, and bottom.

Since: 4.5

◆ setTextMargins() [2/2]

void QLineEdit::setTextMargins ( const QMargins & margins )

Sets the margins around the text inside the frame.

Since: 4.6

◆ setValidator()

void QLineEdit::setValidator ( const QValidator * v )

Sets this line edit to only accept input that the validator, v, will accept.

This allows you to place any arbitrary constraints on the text which may be entered.

If v == 0, setValidator() removes the current input validator. The initial setting is to have no input validator (i.e. any input is accepted up to maxLength()).

See also: validator() QIntValidator QDoubleValidator QRegExpValidator

Definition at line 627 of file qlineedit.cpp.

Referenced by QAbstractSpinBoxPrivate::init(), and QScriptNewBreakpointWidget::QScriptNewBreakpointWidget().

 {
     Q_D(QLineEdit);
     d->control->setValidator(v);
 }

◆ sizeHint()

QSize QLineEdit::sizeHint ( ) const

virtual

Returns a recommended size for the widget.

The width returned, in pixels, is usually enough for about 15 to 20 characters.

Reimplemented from QWidget.

Definition at line 701 of file qlineedit.cpp.

 {
     Q_D(const QLineEdit);
     ensurePolished();
     QFontMetrics fm(font());
     int h = qMax(fm.height(), 14) + 2*d->verticalMargin
             + d->topTextMargin + d->bottomTextMargin
             + d->topmargin + d->bottommargin;
     int w = fm.width(QLatin1Char('x')) * 17 + 2*d->horizontalMargin
             + d->leftTextMargin + d->rightTextMargin
             + d->leftmargin + d->rightmargin; // "some"
     QStyleOptionFrameV2 opt;
     initStyleOption(&opt);
     return (style()->sizeFromContents(QStyle::CT_LineEdit, &opt, QSize(w, h).
                                       expandedTo(QApplication::globalStrut()), this));
 }

◆ text()

QString QLineEdit::text ( ) const

Referenced by cursorPositionAt(), inputMethodQuery(), mouseReleaseEvent(), and ~QLineEdit().

◆ textChanged

void QLineEdit::textChanged ( const QString & text )

signal

This signal is emitted whenever the text changes.

The text argument is the new text.

Unlike textEdited(), this signal is also emitted when the text is changed programmatically, for example, by calling setText().

Referenced by QExpandingLineEdit::QExpandingLineEdit().

◆ textEdited

void QLineEdit::textEdited ( const QString & text )

signal

This signal is emitted whenever the text is edited.

The text argument is the new text.

Unlike textChanged(), this signal is not emitted when the text is changed programmatically, for example, by calling setText().

◆ textMargins()

QMargins QLineEdit::textMargins ( ) const

Returns the widget's text margins.

Since: 4.6

See also: setTextMargins()

Definition at line 1312 of file qlineedit.cpp.

 {
     Q_D(const QLineEdit);
     return QMargins(d->leftTextMargin, d->topTextMargin, d->rightTextMargin, d->bottomTextMargin);
 }

◆ undo

void QLineEdit::undo ( )

slot

Undoes the last operation if undo is available.

Deselects any current selection, and updates the selection start to the current cursor position.

Definition at line 1456 of file qlineedit.cpp.

Referenced by createStandardContextMenu().

 {
     Q_D(QLineEdit);
     resetInputContext();
     d->control->undo();
 }

◆ validator()

const QValidator * QLineEdit::validator ( ) const

Returns a pointer to the current input validator, or 0 if no validator has been set.

See also: setValidator()

Definition at line 609 of file qlineedit.cpp.

 {
     Q_D(const QLineEdit);
     return d->control->validator();
 }

Friends and Related Functions

◆ QAbstractSpinBox

friend class QAbstractSpinBox

friend

Definition at line 275 of file qlineedit.h.

◆ QAccessibleLineEdit

friend class QAccessibleLineEdit

friend

Definition at line 276 of file qlineedit.h.

Properties

◆ acceptableInput

QLineEdit::acceptableInput

private

whether the input satisfies the inputMask and the validator.

By default, this property is true.

See also: setInputMask(), setValidator()

Definition at line 86 of file qlineedit.h.

◆ alignment

Qt::Alignment QLineEdit::alignment

private

the alignment of the line edit

Both horizontal and vertical alignment is allowed here, Qt::AlignJustify will map to Qt::AlignLeft.

By default, this property contains a combination of Qt::AlignLeft and Qt::AlignVCenter.

See also: Qt::Alignment

Definition at line 78 of file qlineedit.h.

◆ cursorMoveStyle

Qt::CursorMoveStyle QLineEdit::cursorMoveStyle

private

the movement style of cursor in this line edit

Returns the movement style for the cursor in the line edit.

Since: 4.8

When this property is set to Qt::VisualMoveStyle, the line edit will use visual movement style. Pressing the left arrow key will always cause the cursor to move left, regardless of the text's writing direction. The same behavior applies to right arrow key.

When the property is Qt::LogicalMoveStyle (the default), within a LTR text block, increase cursor position when pressing left arrow key, decrease cursor position when pressing the right arrow key. If the text block is right to left, the opposite behavior applies.

Since: 4.8

Definition at line 88 of file qlineedit.h.

◆ cursorPosition

int QLineEdit::cursorPosition

private

the current cursor position for this line edit

Setting the cursor position causes a repaint when appropriate.

By default, this property contains a value of 0.

Definition at line 77 of file qlineedit.h.

Referenced by QAbstractSpinBoxPrivate::_q_editorTextChanged(), QDateTimeEditPrivate::clearSection(), QScriptDebuggerLocalsWidgetPrivate::complete(), QDateTimeEditPrivate::cursorPosition(), QAccessibleLineEdit::cursorPosition(), QDateTimeEditPrivate::interpret(), QAbstractSpinBoxPrivate::interpret(), QDateTimeEditPrivate::stepBy(), QDateTimeEditPrivate::updateCache(), and QAbstractSpinBoxPrivate::updateEdit().

◆ displayText

QString QLineEdit::displayText

private

the displayed text

If echoMode is Normal this returns the same as text(); if EchoMode is Password or PasswordEchoOnEdit it returns a string of asterisks text().length() characters long, e.g. "******"; if EchoMode is NoEcho returns an empty string, "".

By default, this property contains an empty string.

See also: setEchoMode() text() EchoMode

Definition at line 76 of file qlineedit.h.

Referenced by QAbstractSpinBoxPrivate::interpret(), QAbstractSpinBox::setButtonSymbols(), and QAbstractSpinBoxPrivate::updateEdit().

◆ dragEnabled

bool QLineEdit::dragEnabled

private

whether the lineedit starts a drag if the user presses and moves the mouse on some selected text

Dragging is disabled by default.

Definition at line 82 of file qlineedit.h.

◆ echoMode

QLineEdit::EchoMode QLineEdit::echoMode

private

the line edit's echo mode

The echo mode determines how the text entered in the line edit is displayed (or echoed) to the user.

The most common setting is Normal , in which the text entered by the user is displayed verbatim, but QLineEdit also supports modes that allow the entered text to be suppressed or obscured: these include NoEcho , Password and PasswordEchoOnEdit .

The widget's display and the ability to copy or drag the text is affected by this setting.

By default, this property is set to Normal .

See also: EchoMode displayText()

Definition at line 75 of file qlineedit.h.

Referenced by QAccessibleLineEdit::state().

◆ frame

bool QLineEdit::frame

private

whether the line edit draws itself with a frame

Use hasFrame() instead.

If enabled (the default) the line edit draws itself inside a frame, otherwise the line edit draws itself without any frame.

Definition at line 74 of file qlineedit.h.

◆ hasSelectedText

bool QLineEdit::hasSelectedText

private

whether there is any text selected

hasSelectedText() returns true if some or all of the text has been selected by the user; otherwise returns false.

By default, this property is false.

See also: selectedText()

Definition at line 80 of file qlineedit.h.

Referenced by QDateTimeEditPrivate::_q_editorCursorPositionChanged(), QAbstractSpinBoxPrivate::_q_editorCursorPositionChanged(), QAccessibleLineEdit::selectionCount(), and QAccessibleLineEdit::state().

◆ inputMask

QString QLineEdit::inputMask

private

The validation input mask.

If no mask is set, inputMask() returns an empty string.

Sets the QLineEdit's validation mask. Validators can be used instead of, or in conjunction with masks; see setValidator().

Unset the mask and return to normal QLineEdit operation by passing an empty string ("") or just calling setInputMask() with no arguments.

The table below shows the characters that can be used in an input mask. A space character, the default character for a blank, is needed for cases where a character is permitted but not required.

Character	Meaning
`A`	ASCII alphabetic character required. A-Z, a-z.
`a`	ASCII alphabetic character permitted but not required.
`N`	ASCII alphanumeric character required. A-Z, a-z, 0-9.
`n`	ASCII alphanumeric character permitted but not required.
`X`	Any character required.
`x`	Any character permitted but not required.
`9`	ASCII digit required. 0-9.
`0`	ASCII digit permitted but not required.
`D`	ASCII digit required. 1-9.
`d`	ASCII digit permitted but not required (1-9).
`#`	ASCII digit or plus/minus sign permitted but not required.
`H`	Hexadecimal character required. A-F, a-f, 0-9.
`h`	Hexadecimal character permitted but not required.
`B`	Binary character required. 0-1.
`b`	Binary character permitted but not required.
`>`	All following alphabetic characters are uppercased.
`<`	All following alphabetic characters are lowercased.
`!`	Switch off case conversion.
`\`	Use `\` to escape the special characters listed above to use them as separators.

The mask consists of a string of mask characters and separators, optionally followed by a semicolon and the character used for blanks. The blank characters are always removed from the text after editing.

Examples:

Mask	Notes
`000.000.000.000`;_	IP address; blanks are `_`.
`HH:HH:HH:HH:HH:HH`;_	MAC address
`0000-00-00`	ISO Date; blanks are `space`
`>AAAAA-AAAAA-AAAAA-AAAAA-AAAAA`;#	License number; blanks are `-` and all (alphabetic) characters are converted to uppercase.

To get range control (e.g., for an IP address) use masks together with validators.

See also: maxLength

Definition at line 71 of file qlineedit.h.

◆ maxLength

int QLineEdit::maxLength

private

the maximum permitted length of the text

If the text is too long, it is truncated at the limit.

If truncation occurs any selected text will be unselected, the cursor position is set to 0 and the first part of the string is shown.

If the line edit has an input mask, the mask defines the maximum string length.

By default, this property contains a value of 32767.

See also: inputMask

Definition at line 73 of file qlineedit.h.

◆ modified

QLineEdit::modified

private

whether the line edit's contents has been modified by the user

The modified flag is never read by QLineEdit; it has a default value of false and is changed to true whenever the user changes the line edit's contents.

This is useful for things that need to provide a default value but do not start out knowing what the default should be (perhaps it depends on other fields on the form). Start the line edit without the best default, and when the default is known, if modified() returns false (the user hasn't entered any text), insert the default value.

Calling setText() resets the modified flag to false.

Definition at line 79 of file qlineedit.h.

◆ placeholderText

QString QLineEdit::placeholderText

private

the line edit's placeholder text

Since: 4.7

Setting this property makes the line edit display a grayed-out placeholder text as long as the text() is empty and the widget doesn't have focus.

By default, this property contains an empty string.

See also: text()

Definition at line 87 of file qlineedit.h.

◆ readOnly

QLineEdit::readOnly

private

whether the line edit is read only.

In read-only mode, the user can still copy the text to the clipboard, or drag and drop the text (if echoMode() is Normal ), but cannot edit it.

QLineEdit does not show a cursor in read-only mode.

By default, this property is false.

See also: setEnabled()

Definition at line 83 of file qlineedit.h.

◆ redoAvailable

QLineEdit::redoAvailable

private

whether redo is available

Redo becomes available once the user has performed one or more undo operations on text in the line edit.

By default, this property is false.

Definition at line 85 of file qlineedit.h.

◆ selectedText

QString QLineEdit::selectedText

private

the selected text

If there is no selected text this property's value is an empty string.

By default, this property contains an empty string.

See also: hasSelectedText()

Definition at line 81 of file qlineedit.h.

Referenced by QDateTimeEditPrivate::_q_editorCursorPositionChanged(), QAbstractSpinBoxPrivate::_q_editorCursorPositionChanged(), QAccessibleLineEdit::selection(), QDateTimeEditPrivate::updateEdit(), and QAbstractSpinBoxPrivate::updateEdit().

◆ text

QString QLineEdit::text

private

the line edit's text

Setting this property clears the selection, clears the undo/redo history, moves the cursor to the end of the line and resets the modified property to false. The text is not validated when inserted with setText().

The text is truncated to maxLength() length.

By default, this property contains an empty string.

See also: insert(), clear()

Definition at line 72 of file qlineedit.h.

Referenced by QComboBoxPrivate::_q_editingFinished(), QAbstractSpinBoxPrivate::_q_editorCursorPositionChanged(), QScriptDebuggerCodeFinderWidgetPrivate::_q_next(), QPrintDialogPrivate::_q_okClicked(), QScriptDebuggerCodeFinderWidgetPrivate::_q_previous(), QPrintDialogPrivate::_q_printerOrFileSelected(), QComboBoxPrivate::_q_returnPressed(), QScriptDebuggerCodeFinderWidgetPrivate::_q_updateButtons(), QFileDialogPrivate::_q_updateOkButton(), QFileDialogPrivate::_q_useNameFilter(), QAccessibleLineEdit::characterCount(), QDateTimeEditPrivate::clearSection(), QScriptDebuggerLocalsWidgetPrivate::complete(), QDateTimeEditPrivate::displayText(), QScriptDebuggerLocalsItemDelegate::eventFilter(), QScriptNewBreakpointWidget::onOkClicked(), QComboBoxPrivate::setCurrentIndex(), QPrintDialogPrivate::setPrinter(), QAccessibleLineEdit::text(), QAccessibleComboBox::text(), QFileDialogPrivate::typedFiles(), and QAbstractSpinBoxPrivate::updateEdit().

◆ undoAvailable

QLineEdit::undoAvailable

private

whether undo is available

Undo becomes available once the user has modified the text in the line edit.

By default, this property is false.

Definition at line 84 of file qlineedit.h.

The documentation for this class was generated from the following files:

/src/gui/widgets/qlineedit.h
/src/gui/widgets/qlineedit.cpp

Public Types

Public Slots

Signals

Public Functions

Protected Functions

Properties

Friends

Additional Inherited Members

Detailed Description

Enumerations

◆ EchoMode

Constructors and Destructors

◆ QLineEdit() [1/2]

◆ QLineEdit() [2/2]

◆ ~QLineEdit()

Functions

◆ alignment()

◆ backspace()

◆ changeEvent()

◆ clear

◆ completer()

◆ contextMenuEvent()

◆ copy

◆ createStandardContextMenu()

◆ cursorBackward()

◆ cursorForward()

◆ cursorMoveStyle()

◆ cursorPosition()

◆ cursorPositionAt()

◆ cursorPositionChanged

◆ cursorRect()

◆ cursorWordBackward()

◆ cursorWordForward()

◆ cut

◆ del()

◆ deselect()

◆ displayText()

◆ dragEnabled()

◆ dragEnterEvent()

◆ dragLeaveEvent()

◆ dragMoveEvent()

◆ dropEvent()

◆ echoMode()

◆ editingFinished

◆ end()

◆ event()

◆ focusInEvent()

◆ focusOutEvent()

◆ getTextMargins()

◆ hasAcceptableInput()

◆ hasFrame()

◆ hasSelectedText()

◆ home()

◆ initStyleOption()

◆ inputMask()

◆ inputMethodEvent()

◆ inputMethodQuery()

◆ insert()

◆ isModified()

◆ isReadOnly()

◆ isRedoAvailable()

◆ isUndoAvailable()

◆ keyPressEvent()

◆ maxLength()

◆ minimumSizeHint()

◆ mouseDoubleClickEvent()

◆ mouseMoveEvent()

◆ mousePressEvent()

◆ mouseReleaseEvent()

◆ paintEvent()

◆ paste

◆ placeholderText()

◆ redo

◆ returnPressed

◆ selectAll

◆ selectedText()

◆ selectionChanged

◆ selectionStart()

◆ setAlignment()

◆ setCompleter()