Qt 4.8
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The QVBoxLayout class lines up widgets vertically. More...
#include <qboxlayout.h>
Public Functions | |
QVBoxLayout () | |
Constructs a new vertical box. More... | |
QVBoxLayout (QWidget *parent) | |
Constructs a new top-level vertical box with parent parent. More... | |
~QVBoxLayout () | |
Destroys this box layout. More... | |
Public Functions inherited from QBoxLayout | |
void | addItem (QLayoutItem *) |
Reimplemented Function More... | |
void | addLayout (QLayout *layout, int stretch=0) |
Adds layout to the end of the box, with serial stretch factor stretch. More... | |
void | addSpacerItem (QSpacerItem *spacerItem) |
Adds spacerItem to the end of this box layout. More... | |
void | addSpacing (int size) |
Adds a non-stretchable space (a QSpacerItem) with size size to the end of this box layout. More... | |
void | addStretch (int stretch=0) |
Adds a stretchable space (a QSpacerItem) with zero minimum size and stretch factor stretch to the end of this box layout. More... | |
void | addStrut (int) |
Limits the perpendicular dimension of the box (e.g. More... | |
void | addWidget (QWidget *, int stretch=0, Qt::Alignment alignment=0) |
Adds widget to the end of this box layout, with a stretch factor of stretch and alignment alignment. More... | |
int | count () const |
Reimplemented Function More... | |
Direction | direction () const |
Returns the direction of the box. More... | |
Qt::Orientations | expandingDirections () const |
Reimplemented Function More... | |
bool | hasHeightForWidth () const |
Reimplemented Function More... | |
int | heightForWidth (int) const |
Reimplemented Function More... | |
void | insertLayout (int index, QLayout *layout, int stretch=0) |
Inserts layout at position index, with stretch factor stretch. More... | |
void | insertSpacerItem (int index, QSpacerItem *spacerItem) |
Inserts spacerItem at position index, with zero minimum size and stretch factor. More... | |
void | insertSpacing (int index, int size) |
Inserts a non-stretchable space (a QSpacerItem) at position index, with size size. More... | |
void | insertStretch (int index, int stretch=0) |
Inserts a stretchable space (a QSpacerItem) at position index, with zero minimum size and stretch factor stretch. More... | |
void | insertWidget (int index, QWidget *widget, int stretch=0, Qt::Alignment alignment=0) |
Inserts widget at position index, with stretch factor stretch and alignment alignment. More... | |
void | invalidate () |
Resets cached information. More... | |
QLayoutItem * | itemAt (int) const |
Reimplemented Function More... | |
QSize | maximumSize () const |
Reimplemented Function More... | |
int | minimumHeightForWidth (int) const |
Reimplemented Function More... | |
QSize | minimumSize () const |
Reimplemented Function More... | |
QBoxLayout (Direction, QWidget *parent=0) | |
Constructs a new QBoxLayout with direction dir and parent widget parent. More... | |
void | setDirection (Direction) |
Sets the direction of this layout to direction. More... | |
void | setGeometry (const QRect &) |
Reimplemented Function More... | |
void | setSpacing (int spacing) |
Reimplements QLayout::setSpacing(). More... | |
void | setStretch (int index, int stretch) |
Sets the stretch factor at position index. More... | |
bool | setStretchFactor (QWidget *w, int stretch) |
Sets the stretch factor for widget to stretch and returns true if widget is found in this layout (not including child layouts); otherwise returns false. More... | |
bool | setStretchFactor (QLayout *l, int stretch) |
Sets the stretch factor for the layout layout to stretch and returns true if layout is found in this layout (not including child layouts); otherwise returns false. More... | |
QSize | sizeHint () const |
Reimplemented Function More... | |
int | spacing () const |
Reimplements QLayout::spacing(). More... | |
int | stretch (int index) const |
Returns the stretch factor at position index. More... | |
QLayoutItem * | takeAt (int) |
Reimplemented Function More... | |
~QBoxLayout () | |
Destroys this box layout. More... | |
Public Functions inherited from QLayout | |
bool | activate () |
Redoes the layout for parentWidget() if necessary. More... | |
void | addWidget (QWidget *w) |
Adds widget w to this layout in a manner specific to the layout. More... | |
QMargins | contentsMargins () const |
Returns the margins used around the layout. More... | |
QRect | contentsRect () const |
Returns the layout's geometry() rectangle, but taking into account the contents margins. More... | |
Qt::Orientations | expandingDirections () const |
Returns whether this layout can make use of more space than sizeHint(). More... | |
QRect | geometry () const |
Reimplemented Function More... | |
void | getContentsMargins (int *left, int *top, int *right, int *bottom) const |
virtual int | indexOf (QWidget *) const |
Searches for widget widget in this layout (not including child layouts). More... | |
void | invalidate () |
Reimplemented Function More... | |
bool | isEmpty () const |
Reimplemented Function More... | |
bool | isEnabled () const |
Returns true if the layout is enabled; otherwise returns false. More... | |
QLayout * | layout () |
Reimplemented Function More... | |
int | margin () const |
QSize | maximumSize () const |
Returns the maximum size of this layout. More... | |
QWidget * | menuBar () const |
Returns the menu bar set for this layout, or 0 if no menu bar is set. More... | |
QSize | minimumSize () const |
Returns the minimum size of this layout. More... | |
QWidget * | parentWidget () const |
Returns the parent widget of this layout, or 0 if this layout is not installed on any widget. More... | |
QLayout (QWidget *parent) | |
Constructs a new top-level QLayout, with parent parent. More... | |
QLayout () | |
Constructs a new child QLayout. More... | |
void | removeItem (QLayoutItem *) |
Removes the layout item item from the layout. More... | |
void | removeWidget (QWidget *w) |
Removes the widget widget from the layout. More... | |
bool | setAlignment (QWidget *w, Qt::Alignment alignment) |
Sets the alignment for widget w to alignment and returns true if w is found in this layout (not including child layouts); otherwise returns false. More... | |
bool | setAlignment (QLayout *l, Qt::Alignment alignment) |
Sets the alignment for the layout l to alignment and returns true if l is found in this layout (not including child layouts); otherwise returns false. More... | |
void | setContentsMargins (int left, int top, int right, int bottom) |
Sets the left, top, right, and bottom margins to use around the layout. More... | |
void | setContentsMargins (const QMargins &margins) |
Sets the margins to use around the layout. More... | |
void | setEnabled (bool) |
Enables this layout if enable is true, otherwise disables it. More... | |
void | setMargin (int) |
void | setMenuBar (QWidget *w) |
Tells the geometry manager to place the menu bar widget at the top of parentWidget(), outside QWidget::contentsMargins(). More... | |
void | setSizeConstraint (SizeConstraint) |
void | setSpacing (int) |
SizeConstraint | sizeConstraint () const |
int | spacing () const |
int | totalHeightForWidth (int w) const |
Also takes contentsMargins and menu bar into account. More... | |
QSize | totalMaximumSize () const |
Also takes contentsMargins and menu bar into account. More... | |
QSize | totalMinimumSize () const |
Also takes contentsMargins and menu bar into account. More... | |
QSize | totalSizeHint () const |
Also takes contentsMargins and menu bar into account. More... | |
void | update () |
Updates the layout for parentWidget(). More... | |
~QLayout () | |
Destroys the layout, deleting all child layouts. 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 | event (QEvent *) |
This virtual function receives events to an object and should return true if the event e was recognized and processed. 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 QLayoutItem | |
Qt::Alignment | alignment () const |
Returns the alignment of this item. More... | |
QSizePolicy::ControlTypes | controlTypes () const |
Returns the control type(s) for the layout item. More... | |
QLayoutItem (Qt::Alignment alignment=0) | |
Constructs a layout item with an alignment. More... | |
void | setAlignment (Qt::Alignment a) |
Sets the alignment of this item to alignment. More... | |
virtual QSpacerItem * | spacerItem () |
If this item is a QSpacerItem, it is returned as a QSpacerItem; otherwise 0 is returned. More... | |
virtual QWidget * | widget () |
If this item is a QWidget, it is returned as a QWidget; otherwise 0 is returned. More... | |
virtual | ~QLayoutItem () |
Destroys the QLayoutItem. More... | |
Additional Inherited Members | |
Public Types inherited from QBoxLayout | |
enum | Direction { LeftToRight, RightToLeft, TopToBottom, BottomToTop, Down = TopToBottom, Up = BottomToTop } |
This type is used to determine the direction of a box layout. More... | |
Public Types inherited from QLayout | |
enum | SizeConstraint { SetDefaultConstraint, SetNoConstraint, SetMinimumSize, SetFixedSize, SetMaximumSize, SetMinAndMaxSize } |
The possible values are: More... | |
Public Slots inherited from QObject | |
void | deleteLater () |
Schedules this object for deletion. 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... | |
Static Public Functions inherited from QLayout | |
static QSize | closestAcceptableSize (const QWidget *w, const QSize &s) |
Returns a size that satisfies all size constraints on widget, including heightForWidth() and that is as close as possible to size. 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 Variables inherited from QObject | |
static const QMetaObject | staticMetaObject |
This variable stores the meta-object for the class. More... | |
Protected Functions inherited from QBoxLayout | |
void | insertItem (int index, QLayoutItem *) |
Inserts item into this box layout at position index. More... | |
Protected Functions inherited from QLayout | |
void | addChildLayout (QLayout *l) |
This function is called from addLayout() or insertLayout() functions in subclasses to add layout l as a sub-layout. More... | |
void | addChildWidget (QWidget *w) |
This function is called from addWidget() functions in subclasses to add w as a managed widget of a layout. More... | |
bool | adoptLayout (QLayout *layout) |
QRect | alignmentRect (const QRect &) const |
Returns the rectangle that should be covered when the geometry of this layout is set to r, provided that this layout supports setAlignment(). More... | |
void | childEvent (QChildEvent *e) |
Reimplemented Function More... | |
QLayout (QLayoutPrivate &d, QLayout *, QWidget *) | |
void | widgetEvent (QEvent *) |
Performs child widget layout when the parent widget is resized. More... | |
Protected Functions inherited from QObject | |
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 Variables inherited from QObject | |
QScopedPointer< QObjectData > | d_ptr |
Protected Variables inherited from QLayoutItem | |
Qt::Alignment | align |
Static Protected Variables inherited from QObject | |
static const QMetaObject | staticQtMetaObject |
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 ®Exp)() |
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... | |
The QVBoxLayout class lines up widgets vertically.
This class is used to construct vertical box layout objects. See QBoxLayout for details.
The simplest use of the class is like this:
First, we create the widgets we want in the layout. Then, we create the QVBoxLayout object and add the widgets into the layout. Finally, we call QWidget::setLayout() to install the QVBoxLayout object onto the widget. At that point, the widgets in the layout are reparented to have window
as their parent.
Definition at line 149 of file qboxlayout.h.
QVBoxLayout::QVBoxLayout | ( | ) |
Constructs a new vertical box.
You must add it to another layout.
Definition at line 1480 of file qboxlayout.cpp.
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explicit |
Constructs a new top-level vertical box with parent parent.
Definition at line 1470 of file qboxlayout.cpp.
QVBoxLayout::~QVBoxLayout | ( | ) |
Destroys this box layout.
The layout's widgets aren't destroyed.
Definition at line 1547 of file qboxlayout.cpp.