qobject.h File Reference

#include <QtCore/qobjectdefs.h>
#include <QtCore/qstring.h>
#include <QtCore/qbytearray.h>
#include <QtCore/qlist.h>
#include <QtCore/qscopedpointer.h>

Go to the source code of this file.

Classes
class	QObject
	The QObject class is the base class of all Qt objects. More...
class	QObjectData
class	QObjectUserData

Macros
#define	Q_DECLARE_INTERFACE(IFace, IId)

Typedefs
typedef QList< QObject * >	QObjectList

Functions
Q_CORE_EXPORT QDebug	operator<< (QDebug, const QObject *)
T	qFindChild (const QObject *o, const QString &name=QString())
QList< T >	qFindChildren (const QObject *oobj, const QString &name=QString())
QList< T >	qFindChildren (const QObject *o, const QRegExp &re)
template<class T >
T	qobject_cast (QObject *object)
template<class T >
T	qobject_cast (const QObject *object)
template<class T >
const char *	qobject_interface_iid ()
Q_CORE_EXPORT QObject *	qt_qFindChild_helper (const QObject *parent, const QString &name, const QMetaObject &mo)
Q_CORE_EXPORT void	qt_qFindChildren_helper (const QObject *parent, const QString &name, const QRegExp *re, const QMetaObject &mo, QList< void *> *list)

Macro Definition Documentation

Q_DECLARE_INTERFACE

#define Q_DECLARE_INTERFACE	(		IFace,
			IId
	)

Value:

template <> inline const char *qobject_interface_iid<IFace *>() \
    { return IId; } \
    template <> inline IFace *qobject_cast<IFace *>(QObject *object) \
    { return reinterpret_cast<IFace *>((object ? object->qt_metacast(IId) : 0)); } \
    template <> inline IFace *qobject_cast<IFace *>(const QObject *object) \
    { return reinterpret_cast<IFace *>((object ? const_cast<QObject *>(object)->qt_metacast(IId) : 0)); }

Definition at line 397 of file qobject.h.

Referenced by QDeclarativeDebugServerConnection::~QDeclarativeDebugServerConnection(), QDeclarativeExtensionInterface::~QDeclarativeExtensionInterface(), QDeclarativeInspectorInterface::~QDeclarativeInspectorInterface(), QFactoryInterface::~QFactoryInterface(), and QTextObjectInterface::~QTextObjectInterface().

Typedef Documentation

QObjectList

typedef QList<QObject*> QObjectList

related

Definition at line 75 of file qobject.h.

Function Documentation

operator<<()

Q_CORE_EXPORT QDebug operator<<	(	QDebug	,
		const QObject *
	)

Definition at line 4030 of file qobject.cpp.

                                                {
#ifndef Q_BROKEN_DEBUG_STREAM
    if (!o)
        return dbg << "QObject(0x0) ";
    dbg.nospace() << o->metaObject()->className() << '(' << (void *)o;
    if (!o->objectName().isEmpty())
        dbg << ", name = " << o->objectName();
    dbg << ')';
    return dbg.space();
#else
    qWarning("This compiler doesn't support streaming QObject to QDebug");
    return dbg;
    Q_UNUSED(o);
#endif
}

qFindChild()

QT_DEPRECATED T qFindChild ( const QObject *  o, const QString &  name = QString()  )

inline

Definition at line 355 of file qobject.h.

{ return o->findChild<T>(name); }

qFindChildren() [1/2]

QT_DEPRECATED QList< T > qFindChildren ( const QObject *  oobj, const QString &  name = QString()  )

inline

Definition at line 359 of file qobject.h.

{
    return o->findChildren<T>(name);
}

qFindChildren() [2/2]

QT_DEPRECATED QList< T > qFindChildren ( const QObject *  o, const QRegExp &  re  )

inline

Definition at line 366 of file qobject.h.

{
    return o->findChildren<T>(re);
}

qobject_cast() [1/2]

template<class T >

T qobject_cast ( QObject *  object )

related

Definition at line 375 of file qobject.h.

Referenced by QActionGroupPrivate::_q_actionChanged(), QActionGroupPrivate::_q_actionHovered(), QActionGroupPrivate::_q_actionTriggered(), QPlainTextEditPrivate::_q_adjustScrollbars(), QStateMachinePrivate::_q_animationFinished(), QMdiAreaPrivate::_q_deactivateAllWindows(), QMdiSubWindowPrivate::_q_enterInteractiveMode(), QScriptDebuggerCodeWidgetPrivate::_q_onBreakpointEnableRequest(), QScriptDebuggerCodeWidgetPrivate::_q_onBreakpointToggleRequest(), QScriptDebuggerLocalsWidgetPrivate::_q_onCompletionTaskFinished(), QScriptDebuggerConsoleWidgetPrivate::_q_onCompletionTaskFinished(), QMdiAreaPrivate::_q_processWindowStateChanged(), QFileDialogPrivate::_q_showHeader(), QTextCursorPrivate::aboutToRemoveCell(), QAccessibleAbstractSpinBox::abstractSpinBox(), QAccessibleButton::actionText(), QTextCursorPrivate::adjustCursor(), QDockAreaLayoutInfo::apply(), QToolBarAreaLayout::apply(), QStateMachinePrivate::applyProperties(), QStyleSheetStyleSelector::attribute(), QAudioDeviceFactory::audioDeviceInfo(), QAudioDeviceFactory::availableDevices(), QAccessibleButton::button(), QTextDocumentPrivate::changeObjectFormat(), QAccessibleTree::childAt(), QAccessibleTree::childCount(), childWidgets(), QAccessibleComboBox::comboBox(), QTextCursorPrivate::complexSelectionTable(), QShortcutMap::correctContext(), QShortcutMap::correctGraphicsWidgetContext(), QShortcutMap::correctWidgetContext(), QDeclarativeGridViewPrivate::createComponentItem(), QAudioDeviceFactory::createInputDevice(), QAudioDeviceFactory::createOutputDevice(), createReadHandlerHelper(), QTextTablePrivate::createTable(), QGLGraphicsSystem::createWindowSurface(), QTextCursor::currentList(), QTextCursor::currentTable(), QAudioDeviceFactory::defaultInputDevice(), QAudioDeviceFactory::defaultOutputDevice(), QWidget::destroy(), QAccessibleButton::doAction(), dockedGeometry(), QDockWidgetItem::dockWidgetLayout(), QAccessibleTitleBar::dockWidgetLayout(), QTextDocumentLayoutPrivate::drawFrame(), QMdiSubWindowPrivate::drawTitleBarWhenMaximized(), QDockWidgetPrivate::endDrag(), QUIKitSoftwareInputHandler::eventFilter(), QWindowsStyle::eventFilter(), QZipWriter::exists(), QZipReader::exists(), QTextDocumentWriter::fileName(), QImageWriter::fileName(), QImageReader::fileName(), QTextStreamPrivate::fillReadBuffer(), findMenubarForWindow(), QTextStreamPrivate::flushWriteBuffer(), QGraphicsItemPrivate::genericMapFromScene(), QScriptDebuggerLocalsModelPrivate::get(), getNamedAttribute(), QScriptDebuggerScriptedConsoleCommandJob::handleResponse(), handleSplitterContentsAttribute(), handleSplittersAttribute(), QAccessibleHeader::header(), QAInterface::hiObject(), QAccessibleDisplay::imagePosition(), QAccessibleDisplay::imageSize(), QAccessibleTree::indexFromLogical(), QAccessibleTree::indexOfChild(), QAccessibleStackedWidget::indexOfChild(), QAccessibleToolBox::indexOfChild(), QDockWidgetPrivate::initDrag(), QToolBarPrivate::initDrag(), QStateMachinePrivate::initializeAnimation(), initializeDb(), QDialogButtonBoxPrivate::initLayout(), QDockWidget::initStyleOption(), QTextDocumentPrivate::insert_block(), QTextDocumentPrivate::insert_string(), QTreeWidgetItem::insertChildren(), QTextDocumentPrivate::insertFrame(), QMdiAreaPrivate::internalRaise(), QDockWidgetPrivate::isAnimating(), isEmptyBlockAfterTable(), isEmptyBlockBeforeTable(), isItemView(), isLineSeparatorBlockAfterTable(), QScriptDebuggerLocalsModelPrivate::isTopLevelNode(), EGLNullWSWindowSurface::isValid(), QGraphicsScenePrivate::itemsAtPosition(), QAccessibleItemView::itemView(), QTextDocumentLayoutPrivate::layoutFlow(), QTabBarPrivate::layoutTabs(), QAccessibleLineEdit::lineEdit(), QListWidgetPrivate::listModel(), QSvgIOHandlerPrivate::load(), loadSingleEngine(), QAccessibleMainWindow::mainWindow(), QGestureEvent::mapToGraphicsScene(), mdiAreaNavigate(), QAccessibleMenu::menu(), QAccessibleMenuBar::menuBar(), ModelIndexIterator::ModelIndexIterator(), QDockWidgetPrivate::mouseDoubleClickEvent(), QDockWidgetPrivate::mouseMoveEvent(), QToolBarPrivate::mouseMoveEvent(), QDockWidgetPrivate::mousePressEvent(), QTextDocumentPrivate::move(), QTextCursorPrivate::movePosition(), QVNCIntegration::moveToScreen(), my_jpeg_source_mgr::my_jpeg_source_mgr(), QAccessibleDisplay::navigate(), QAccessibleMdiSubWindow::navigate(), QPdfBaseEngine::newPage(), QAccessibleItemView::object(), QLayout::parentWidget(), QAccessibleProgressBar::progressBar(), q_createNativeChildrenAndSetParent(), QOpenKODEWindow::QOpenKODEWindow(), QRenderRule::QRenderRule(), qt_GetMessageHook(), qt_guiPlatformMenuBarFactory(), qt_mac_unregister_widget(), qt_mainwindow_layout(), QAxClientSite::qt_metacall(), qt_x11_recreateNativeWidgetsRecursive(), QTestLiteStaticInfoPrivate::QTestLiteStaticInfoPrivate(), QTreeWidgetItem::QTreeWidgetItem(), QTreeWidgetItemIterator::QTreeWidgetItemIterator(), QAccessible::queryAccessibleInterface(), QUnixPrintWidgetPrivate::QUnixPrintWidgetPrivate(), QVNCIntegration::QVNCIntegration(), QAccessibleDockWidget::rect(), QAccessibleTitleBar::rect(), QAccessibleDisplay::relationTo(), QTextDocumentPrivate::remove_block(), QTextDocumentPrivate::remove_string(), QMdiSubWindowPrivate::removeButtonsFromMenuBar(), QAccessibleDisplay::role(), QTextDocumentPrivate::rootFrame(), QTestAccessibility::rootObjectHandler(), QAccessibleTree::rowCount(), QAccessibleTable2Cell::rowIndex(), QTextDocumentPrivate::scan_frames(), QAccessibleScrollBar::scrollBar(), QWidgetPrivate::scrollChildren(), QTextCursorPrivate::selectedTableCells(), QTextDocumentPrivate::setBlockFormat(), QTreeWidgetItem::setData(), QOpenKODEWindow::setGeometry(), QRasterWindowSurface::setGeometry(), QInputDialogPrivate::setInputWidget(), QMdiSubWindowPrivate::setMaximizeMode(), QWidgetPrivate::setModal_sys(), QLocalSocket::setSocketDescriptor(), QDockWidgetPrivate::setWindowState(), QFileDialogComboBox::showPopup(), showToolTip(), QAccessibleSlider::slider(), QTreeWidgetItemPrivate::sortChildren(), QTreeWidgetItem::sortChildren(), QAbstractTransitionPrivate::sourceState(), QAccessibleSpinBox::spinBox(), QHttpNetworkReply::sslConfiguration(), QScriptDebuggerScriptedConsoleCommandJob::start(), QToolBarPrivate::startDrag(), QAccessibleButton::state(), QAccessibleTable2Cell::state(), QMdiAreaTabBar::subWindowFromIndex(), QMdiAreaPrivate::subWindowList(), QImageWriter::supportedImageFormats(), QImageReader::supportedImageFormats(), QAccessibleTabBar::tabBar(), QTreeWidgetItem::takeChild(), QTreeWidgetItem::takeChildren(), IsWindowAndNotDrawerOrSheetTest::test(), QAccessibleButton::text(), QAccessibleDisplay::text(), QAccessibleToolButton::toolButton(), QKeyMapperPrivate::translateKeyEvent(), QTextDocumentPrivate::undoRedo(), QDockWidgetPrivate::unplug(), QDockWidgetPrivate::updateButtons(), QWidgetBackingStore::updateLists(), QDockAreaLayoutInfo::updateTabBar(), QScriptDebuggerLocalsItemDelegate::validateInput(), QAccessibleTable2::view(), QAxAggregated::widget(), QAccessibleWidget::widget(), QLayout::widgetEvent(), QAccessibleWidgetStack::widgetStack(), QAxScriptSite::window(), QTextOdfWriter::writeFrame(), QSQLiteResult::~QSQLiteResult(), and QTreeWidgetItem::~QTreeWidgetItem().

{
#if !defined(QT_NO_QOBJECT_CHECK)
    reinterpret_cast<T>(object)->qt_check_for_QOBJECT_macro(*reinterpret_cast<T>(object));
#endif
    return static_cast<T>(reinterpret_cast<T>(object)->staticMetaObject.cast(object));
}

qobject_cast() [2/2]

template<class T >

T qobject_cast ( const QObject *  object )

inline

Definition at line 384 of file qobject.h.

{
#if !defined(QT_NO_QOBJECT_CHECK)
    reinterpret_cast<T>(object)->qt_check_for_QOBJECT_macro(*reinterpret_cast<T>(const_cast<QObject *>(object)));
#endif
    return static_cast<T>(reinterpret_cast<T>(object)->staticMetaObject.cast(object));
}

qobject_interface_iid()

template<class T >

const char* qobject_interface_iid ( )

inline

Definition at line 393 of file qobject.h.

{ return 0; }

qt_qFindChild_helper()

Q_CORE_EXPORT QObject* qt_qFindChild_helper	(	const QObject *	parent,
		const QString &	name,
		const QMetaObject &	mo
	)

Warning

This function is not part of the public interface.

Definition at line 1924 of file qobject.cpp.

Referenced by QObject::findChild(), and qt_qFindChild_helper().

{
    if (!parent)
        return 0;
    const QObjectList &children = parent->children();
    QObject *obj;
    int i;
    for (i = 0; i < children.size(); ++i) {
        obj = children.at(i);
        if (mo.cast(obj) && (name.isNull() || obj->objectName() == name))
            return obj;
    }
    for (i = 0; i < children.size(); ++i) {
        obj = qt_qFindChild_helper(children.at(i), name, mo);
        if (obj)
            return obj;
    }
    return 0;
}

qt_qFindChildren_helper()

Q_CORE_EXPORT void qt_qFindChildren_helper	(	const QObject *	parent,
		const QString &	name,
		const QRegExp *	re,
		const QMetaObject &	mo,
		QList< void *> *	list
	)

Warning

This function is not part of the public interface.

Definition at line 1900 of file qobject.cpp.

Referenced by QObject::findChildren(), and qt_qFindChildren_helper().

{
    if (!parent || !list)
        return;
    const QObjectList &children = parent->children();
    QObject *obj;
    for (int i = 0; i < children.size(); ++i) {
        obj = children.at(i);
        if (mo.cast(obj)) {
            if (re) {
                if (re->indexIn(obj->objectName()) != -1)
                    list->append(obj);
            } else {
                if (name.isNull() || obj->objectName() == name)
                    list->append(obj);
            }
        }
        qt_qFindChildren_helper(obj, name, re, mo, list);
    }
}