When dragging nested QDockWidgets, or when dragging to a different dock area, QMainWindow will split the QDockWindow under the mouse. Be aware that the QDockWidget under the mouse will only be split by the QDockWidget being dragged if both can fit in the space currently occupied by the QDockWidget under the mouse.
Dragging to a Different Qt::DockWidgetArea
The QDockWidget::floatable property influences feedback when the user drags a QDockWidget over the central widget:
- If floating is true, QMainWindow chooses a dock area based on the position of the mouse pointer. If the mouse is within 50 pixels of the central widget's edge, the adjacent dock area is chosen. When dragging into the corners of these 50 pixel regions, the current corner() configuration is used to make the decision. Otherwise, the QRubberBand is shown under the mouse pointer, as above.
- If floating is false, QMainWindow chooses a dock area based on the distance between the mouse pointer and the center of the central widget. If the mouse comes within 50 pixels of the central widget's edge, the adjacent dock area is always chosen. When dragging into the corners of these 50 pixel regions, the current corner() configuration is used to make the decision.
In either case, dragging the mouse over another QDockWidget causes QMainWindow to choose the other QDockWidget's dock area.
When dragging outside the QMainWindow, the QDockWidget::floating property again controls feedback during dragging. When the property is false, dragging outside of the QMainWindow will show the rubberband over the QDockWidget's current location. This indicates that the QDockWidget cannot be moved outside of the QMainWindow. When the QDockWidget::floatable property is true, dragging outside of the QMainWindow will show the QRubberBand under the mouse pointer. This indicates that the QDockWidget will be floating when the mouse button is released.
See also QMenuBar, QToolBar, QStatusBar, and QDockWidget.
Property Documentation
iconSize : QSize
This property holds size of toolbar icons in this mainwindow.
The default is the default tool bar icon size of the GUI style.
Access functions:
- QSize iconSize () const
- void setIconSize ( const QSize & iconSize )
This property holds style of toolbar buttons in this mainwindow.
The default is Qt::ToolButtonIconOnly.
Access functions:
- Qt::ToolButtonStyle toolButtonStyle () const
- void setToolButtonStyle ( Qt::ToolButtonStyle toolButtonStyle )
Member Function Documentation
QMainWindow::QMainWindow ( QWidget * parent = 0, Qt::WFlags flags = 0 )
Constructs a QMainWindow with the given parent and the specified widget flags.
QMainWindow::~QMainWindow ()
Destroys the main window.
Adds the given dockwidget to the specified area.
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
Adds dockwidget into the given area in the direction specified by the orientation.
void QMainWindow::addToolBar ( Qt::ToolBarArea area, QToolBar * toolbar )
Adds the toolbar into the specified area in this main window. The toolbar is placed at the end of the current tool bar block (i.e. line). If the main window already manages toolbar then it will only move the toolbar to area.
See also insertToolBar(), addToolBarBreak(), and insertToolBarBreak().
void QMainWindow::addToolBar ( QToolBar * toolbar )
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
Equivalent of calling addToolBar(Qt::TopToolBarArea, toolbar)
QToolBar * QMainWindow::addToolBar ( const QString & title )
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
Creates a QToolBar object, setting its window title to title, and inserts it into the top toolbar area.
See also setWindowTitle().
void QMainWindow::addToolBarBreak ( Qt::ToolBarArea area = Qt::TopToolBarArea )
Adds a toolbar break to the given area after all the other objects that are present.
QWidget * QMainWindow::centralWidget () const
Returns the central widget for the main window. This function returns zero if the central widget has not been set.
See also setCentralWidget().
Returns the dock widget area that occupies the specified corner.
See also setCorner().
This function is called to create a popup menu when the user right-clicks on the menu bar, a toolbar or a dock widget. If you want to create a custom popup menu, reimplement this function and return the created popup menu. Ownership of the popup menu is transferred to the caller.
Returns the Qt::DockWidgetArea for dockwidget.
See also addDockWidget(), splitDockWidget(), and Qt::DockWidgetArea.
void QMainWindow::iconSizeChanged ( const QSize & iconSize ) [signal]
This signal is emitted when the size of the icons used in the window is changed. The new icon size is passed in iconSize.
You can connect this signal to other components to help maintain a consistent appearance for your application.
See also setIconSize().
void QMainWindow::insertToolBar ( QToolBar * before, QToolBar * toolbar )
Inserts the toolbar into the area occupied by the before toolbar so that it appears before it. For example, in normal left-to-right layout operation, this means that toolbar will appear to the left of the toolbar specified by before in a horizontal toolbar area.
See also insertToolBarBreak(), addToolBar(), and addToolBarBreak().
void QMainWindow::insertToolBarBreak ( QToolBar * before )
Inserts a toolbar break before the toolbar specified by before.
Returns the menu bar for the main window. This function creates and returns an empty menu bar if the menu bar does not exist.
See also setMenuBar().
void QMainWindow::removeDockWidget ( QDockWidget * dockwidget )
Removes the dockwidget from the main window.
void QMainWindow::removeToolBar ( QToolBar * toolbar )
Removes the toolbar from the main window.
bool QMainWindow::restoreState ( const QByteArray & state, int version = 0 )
Restores the state of this mainwindow's toolbars and dockwidgets. The version number is compared with that stored in state. If they do not match, the mainwindow's state is left unchanged, and this function returns false; otherwise, the state is restored, and this function returns true.
See also saveState().
QByteArray QMainWindow::saveState ( int version = 0 ) const
Saves the current state of this mainwindow's toolbars and dockwidgets. The version number is stored as part of the data.
The objectName property is used to identify each QToolBar and QDockWidget. You should make sure that this property is unique for each QToolBar and QDockWidget you add to the QMainWindow
To restore the saved state, pass the return value and version number to restoreState().
See also restoreState().
void QMainWindow::setCentralWidget ( QWidget * widget )
Sets the given widget to be the main window's central widget.
Warning: This function should be called at most once for each main window instance
Note: QMainWindow takes ownership of the widget pointer and deletes it at the appropriate time.
See also centralWidget().
Sets the given dock widget area to occupy the specified corner.
See also corner().
Sets the menu bar for the main window to menuBar.
Note: QMainWindow takes ownership of the menuBar pointer and deletes it at the appropriate time.
See also menuBar().
void QMainWindow::setStatusBar ( QStatusBar * statusbar )
Sets the status bar for the main window to statusbar.
Note: QMainWindow takes ownership of the statusbar pointer and deletes it at the appropriate time.
See also statusBar().
Splits the space covered by the first dock widget into two parts, moves the first dock widget into the first part, and moves the second dock widget into the second part.
The orientation specifies how the space is divided: A Qt::Horizontal split places the second dock widget to the right of the first; a Qt::Vertical split places the second dock widget below the first.
Note: The Qt::LayoutDirection influences the order of the dock widgets in the two parts of the divided area. When right-to-left layout direction is enabled, the placing of the dock widgets will be reversed.
QStatusBar * QMainWindow::statusBar () const
Returns the status bar for the main window. This function creates and returns an empty status bar if the status bar does not exist.
See also setStatusBar().
Returns the tool bar area for toolbar.
See also addToolBar(), addToolBarBreak(), and Qt::ToolBarArea.
void QMainWindow::toolButtonStyleChanged ( Qt::ToolButtonStyle toolButtonStyle ) [signal]
This signal is emiited when the style used for tool buttons in the window is changed. The new style is passed in toolButtonStyle.
You can connect this signal to other components to help maintain a consistent appearance for your application.
See also setToolButtonStyle().
