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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QMainWindow Class Reference</h1>
<p>The QMainWindow class provides a main application window, with
a menu bar, dock windows (e.g. for toolbars), and a status bar.
<a href="#details">More...</a>
<p><tt>#include <<a href="qmainwindow-h.html">qmainwindow.h</a>></tt>
<p>Inherits <a href="qwidget.html">QWidget</a>.
<p><a href="qmainwindow-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li><div class=fn><a href="#QMainWindow"><b>QMainWindow</b></a> ( QWidget * parent = 0, const char * name = 0, WFlags f = WType_TopLevel )</div></li>
<li><div class=fn><a href="#~QMainWindow"><b>~QMainWindow</b></a> ()</div></li>
<li><div class=fn>QMenuBar * <a href="#menuBar"><b>menuBar</b></a> () const</div></li>
<li><div class=fn>QStatusBar * <a href="#statusBar"><b>statusBar</b></a> () const</div></li>
<li><div class=fn>QToolTipGroup * <a href="#toolTipGroup"><b>toolTipGroup</b></a> () const</div></li>
<li><div class=fn>virtual void <a href="#setCentralWidget"><b>setCentralWidget</b></a> ( QWidget * w )</div></li>
<li><div class=fn>QWidget * <a href="#centralWidget"><b>centralWidget</b></a> () const</div></li>
<li><div class=fn>virtual void <a href="#setDockEnabled"><b>setDockEnabled</b></a> ( Dock dock, bool enable )</div></li>
<li><div class=fn>bool <a href="#isDockEnabled"><b>isDockEnabled</b></a> ( Dock dock ) const</div></li>
<li><div class=fn>bool <a href="#isDockEnabled-2"><b>isDockEnabled</b></a> ( QDockArea * area ) const</div></li>
<li><div class=fn>virtual void <a href="#setDockEnabled-2"><b>setDockEnabled</b></a> ( QDockWindow * dw, Dock dock, bool enable )</div></li>
<li><div class=fn>bool <a href="#isDockEnabled-3"><b>isDockEnabled</b></a> ( QDockWindow * tb, Dock dock ) const</div></li>
<li><div class=fn>bool <a href="#isDockEnabled-4"><b>isDockEnabled</b></a> ( QDockWindow * dw, QDockArea * area ) const</div></li>
<li><div class=fn>virtual void <a href="#addDockWindow"><b>addDockWindow</b></a> ( QDockWindow * dockWindow, Dock edge = DockTop, bool newLine = FALSE )</div></li>
<li><div class=fn>virtual void <a href="#addDockWindow-2"><b>addDockWindow</b></a> ( QDockWindow * dockWindow, const QString & label, Dock edge = DockTop, bool newLine = FALSE )</div></li>
<li><div class=fn>virtual void <a href="#moveDockWindow"><b>moveDockWindow</b></a> ( QDockWindow * dockWindow, Dock edge = DockTop )</div></li>
<li><div class=fn>virtual void <a href="#moveDockWindow-2"><b>moveDockWindow</b></a> ( QDockWindow * dockWindow, Dock edge, bool nl, int index, int extraOffset = -1 )</div></li>
<li><div class=fn>virtual void <a href="#removeDockWindow"><b>removeDockWindow</b></a> ( QDockWindow * dockWindow )</div></li>
<li><div class=fn>bool <a href="#rightJustification"><b>rightJustification</b></a> () const</div></li>
<li><div class=fn>bool <a href="#usesBigPixmaps"><b>usesBigPixmaps</b></a> () const</div></li>
<li><div class=fn>bool <a href="#usesTextLabel"><b>usesTextLabel</b></a> () const</div></li>
<li><div class=fn>bool <a href="#dockWindowsMovable"><b>dockWindowsMovable</b></a> () const</div></li>
<li><div class=fn>bool <a href="#opaqueMoving"><b>opaqueMoving</b></a> () const</div></li>
<li><div class=fn>bool <a href="#getLocation"><b>getLocation</b></a> ( QDockWindow * dw, Dock & dock, int & index, bool & nl, int & extraOffset ) const</div></li>
<li><div class=fn>QPtrList<QDockWindow> <a href="#dockWindows"><b>dockWindows</b></a> ( Dock dock ) const</div></li>
<li><div class=fn>QPtrList<QDockWindow> <a href="#dockWindows-2"><b>dockWindows</b></a> () const</div></li>
<li><div class=fn>void <a href="#lineUpDockWindows"><b>lineUpDockWindows</b></a> ( bool keepNewLines = FALSE )</div></li>
<li><div class=fn>bool <a href="#isDockMenuEnabled"><b>isDockMenuEnabled</b></a> () const</div></li>
<li><div class=fn>bool <a href="#hasDockWindow"><b>hasDockWindow</b></a> ( QDockWindow * dw )</div></li>
<li><div class=fn>void addToolBar ( QDockWindow *, Dock = DockTop, bool newLine = FALSE ) <em>(obsolete)</em></div></li>
<li><div class=fn>void addToolBar ( QDockWindow *, const QString & label, Dock = DockTop, bool newLine = FALSE ) <em>(obsolete)</em></div></li>
<li><div class=fn>void moveToolBar ( QDockWindow *, Dock = DockTop ) <em>(obsolete)</em></div></li>
<li><div class=fn>void moveToolBar ( QDockWindow *, Dock, bool nl, int index, int extraOffset = -1 ) <em>(obsolete)</em></div></li>
<li><div class=fn>void removeToolBar ( QDockWindow * ) <em>(obsolete)</em></div></li>
<li><div class=fn>bool toolBarsMovable () const <em>(obsolete)</em></div></li>
<li><div class=fn>QPtrList<QToolBar> <a href="#toolBars"><b>toolBars</b></a> ( Dock dock ) const</div></li>
<li><div class=fn>void lineUpToolBars ( bool keepNewLines = FALSE ) <em>(obsolete)</em></div></li>
<li><div class=fn>QDockArea * <a href="#leftDock"><b>leftDock</b></a> () const</div></li>
<li><div class=fn>QDockArea * <a href="#rightDock"><b>rightDock</b></a> () const</div></li>
<li><div class=fn>QDockArea * <a href="#topDock"><b>topDock</b></a> () const</div></li>
<li><div class=fn>QDockArea * <a href="#bottomDock"><b>bottomDock</b></a> () const</div></li>
<li><div class=fn>virtual bool <a href="#isCustomizable"><b>isCustomizable</b></a> () const</div></li>
<li><div class=fn>bool <a href="#appropriate"><b>appropriate</b></a> ( QDockWindow * dw ) const</div></li>
<li><div class=fn>enum <a href="#DockWindows-enum"><b>DockWindows</b></a> { OnlyToolBars, NoToolBars, AllDockWindows }</div></li>
<li><div class=fn>QPopupMenu * <a href="#createDockWindowMenu"><b>createDockWindowMenu</b></a> ( DockWindows dockWindows = AllDockWindows ) const</div></li>
</ul>
<h2>Public Slots</h2>
<ul>
<li><div class=fn>virtual void <a href="#setRightJustification"><b>setRightJustification</b></a> ( bool )</div></li>
<li><div class=fn>virtual void <a href="#setUsesBigPixmaps"><b>setUsesBigPixmaps</b></a> ( bool )</div></li>
<li><div class=fn>virtual void <a href="#setUsesTextLabel"><b>setUsesTextLabel</b></a> ( bool )</div></li>
<li><div class=fn>virtual void <a href="#setDockWindowsMovable"><b>setDockWindowsMovable</b></a> ( bool )</div></li>
<li><div class=fn>virtual void <a href="#setOpaqueMoving"><b>setOpaqueMoving</b></a> ( bool )</div></li>
<li><div class=fn>virtual void <a href="#setDockMenuEnabled"><b>setDockMenuEnabled</b></a> ( bool b )</div></li>
<li><div class=fn>virtual void <a href="#whatsThis"><b>whatsThis</b></a> ()</div></li>
<li><div class=fn>virtual void <a href="#setAppropriate"><b>setAppropriate</b></a> ( QDockWindow * dw, bool a )</div></li>
<li><div class=fn>virtual void <a href="#customize"><b>customize</b></a> ()</div></li>
<li><div class=fn>void setToolBarsMovable ( bool ) <em>(obsolete)</em></div></li>
</ul>
<h2>Signals</h2>
<ul>
<li><div class=fn>void <a href="#pixmapSizeChanged"><b>pixmapSizeChanged</b></a> ( bool )</div></li>
<li><div class=fn>void <a href="#usesTextLabelChanged"><b>usesTextLabelChanged</b></a> ( bool )</div></li>
<li><div class=fn>void <a href="#dockWindowPositionChanged"><b>dockWindowPositionChanged</b></a> ( QDockWindow * dockWindow )</div></li>
<li><div class=fn>void toolBarPositionChanged ( QToolBar * ) <em>(obsolete)</em></div></li>
</ul>
<h2>Properties</h2>
<ul>
<li><div class=fn>bool <a href="#dockWindowsMovable-prop"><b>dockWindowsMovable</b></a> - whether the dock windows are movable</div></li>
<li><div class=fn>bool <a href="#opaqueMoving-prop"><b>opaqueMoving</b></a> - whether dock windows are moved opaquely</div></li>
<li><div class=fn>bool <a href="#rightJustification-prop"><b>rightJustification</b></a> - whether the main window right-justifies its dock windows</div></li>
<li><div class=fn>bool <a href="#usesBigPixmaps-prop"><b>usesBigPixmaps</b></a> - whether big pixmaps are enabled</div></li>
<li><div class=fn>bool <a href="#usesTextLabel-prop"><b>usesTextLabel</b></a> - whether text labels for toolbar buttons are enabled</div></li>
</ul>
<h2>Protected Members</h2>
<ul>
<li><div class=fn>virtual void <a href="#childEvent"><b>childEvent</b></a> ( QChildEvent * e )</div></li>
</ul>
<h2>Protected Slots</h2>
<ul>
<li><div class=fn>virtual void <a href="#setUpLayout"><b>setUpLayout</b></a> ()</div></li>
<li><div class=fn>virtual bool <a href="#showDockMenu"><b>showDockMenu</b></a> ( const QPoint & globalPos )</div></li>
<li><div class=fn>void <a href="#menuAboutToShow"><b>menuAboutToShow</b></a> ()</div></li>
</ul>
<h2>Related Functions</h2>
<ul>
<li><div class=fn>QTextStream & <a href="#operator-lt-lt"><b>operator<<</b></a> ( QTextStream & ts, const QMainWindow & mainWindow )</div></li>
<li><div class=fn>QTextStream & <a href="#operator-gt-gt"><b>operator>></b></a> ( QTextStream & ts, QMainWindow & mainWindow )</div></li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>
<p> The QMainWindow class provides a main application window, with
a menu bar, dock windows (e.g. for toolbars), and a status bar.
<p>
<p> Main windows are most often used to provide menus, toolbars and a
status bar around a large central widget, such as a text edit or
drawing canvas. QMainWindow is usually subclassed since this makes
it easier to encapsulate the central widget, menus and toolbars as
well as the window's state. Subclassing makes it possible to create
the slots that are called when the user clicks menu items or toolbar
buttons. You can also create main windows using <i>Qt Designer</i>.
We'll briefly review adding menu items and toolbar buttons then
describe the facilities of QMainWindow itself.
<p> <pre>
QMainWindow *mw = new QMainWindow;
<a href="qtextedit.html">QTextEdit</a> *edit = new <a href="qtextedit.html">QTextEdit</a>( mw, "editor" );
edit-><a href="qwidget.html#setFocus">setFocus</a>();
mw-><a href="qwidget.html#setCaption">setCaption</a>( "Main Window" );
mw-><a href="#setCentralWidget">setCentralWidget</a>( edit );
mw-><a href="qwidget.html#show">show</a>();
</pre>
<p> QMainWindows may be created in their own right as shown above. The
central widget is set with <a href="#setCentralWidget">setCentralWidget</a>(). Popup menus can be added
to the default menu bar, widgets can be added to the status bar,
toolbars and dock windows can be added to any of the dock areas.
<p>
<pre> ApplicationWindow * mw = new ApplicationWindow();
mw-><a href="qwidget.html#setCaption">setCaption</a>( "Qt Example - Application" );
<a name="x6"></a> mw-><a href="qwidget.html#show">show</a>();
</pre>
<p> In the extract above ApplicationWindow is a subclass of QMainWindow
that we must write for ourselves; this is the usual approach to
using QMainWindow. (The source for the extracts in this description
are taken from <a href="simple-application-example.html">application/main.cpp</a>, <a href="simple-application-example.html">application/application.cpp</a>, <a href="qaction-application-example.html">action/main.cpp</a>,
and <a href="qaction-application-example.html">action/application.cpp</a> )
<p> When subclassing we add the menu items and toolbars in the
subclass's constructor. If we've created a QMainWindow instance
directly we can add menu items and toolbars just as easily by
passing the QMainWindow instance as the parent instead of the <em>this</em> pointer.
<p>
<pre> <a href="qpopupmenu.html">QPopupMenu</a> * help = new <a href="qpopupmenu.html">QPopupMenu</a>( this );
<a href="#menuBar">menuBar</a>()->insertItem( "&Help", help );
help-><a href="qmenudata.html#insertItem">insertItem</a>( "&About", this, SLOT(about()), Key_F1 );
</pre>
<p> Here we've added a new menu with one menu item. The menu has been
inserted into the menu bar that QMainWindow provides by default and
which is accessible through the <a href="#menuBar">menuBar</a>() function. The slot will be
called when the menu item is clicked.
<p>
<pre> <a href="qtoolbar.html">QToolBar</a> * fileTools = new <a href="qtoolbar.html">QToolBar</a>( this, "file operations" );
fileTools-><a href="qtoolbar.html#setLabel">setLabel</a>( "File Operations" );
</pre><pre> QToolButton * fileOpen
= new <a href="qtoolbutton.html">QToolButton</a>( openIcon, "Open File", <a href="qstring.html#QString-null">QString::null</a>,
this, SLOT(choose()), fileTools, "open file" );
</pre>
<p> This extract shows the creation of a toolbar with one toolbar
button. QMainWindow supplies four dock areas for toolbars. When a
toolbar is created as a child of a QMainWindow (or derived class)
instance it will be placed in a dock area (the <a href="qt.html#Dock-enum">Top</a> dock area by
default). The slot will be called when the toolbar button is
clicked. Any dock window can be added to a dock area either using
<a href="#addDockWindow">addDockWindow</a>(), or by creating a dock window with the QMainWindow
as the parent.
<p>
<pre> e = new <a href="qtextedit.html">QTextEdit</a>( this, "editor" );
e-><a href="qwidget.html#setFocus">setFocus</a>();
<a href="#setCentralWidget">setCentralWidget</a>( e );
<a href="#statusBar">statusBar</a>()->message( "Ready", 2000 );
</pre>
<p> Having created the menus and toolbar we create an instance of the
large central widget, give it the focus and set it as the main
window's central widget. In the example we've also set the status
bar, accessed via the <a href="#statusBar">statusBar</a>() function, to an initial message
which will be displayed for two seconds. Note that you can add
additional widgets to the status bar, for example labels, to show
further status information. See the <a href="qstatusbar.html">QStatusBar</a> documentation for
details, particularly the addWidget() function.
<p> Often we want to synchronize a toolbar button with a menu item.
For example, if the user clicks a 'bold' toolbar button we want the
'bold' menu item to be checked. This synchronization can be achieved
automatically by creating actions and adding the actions to the
toolbar and menu.
<p>
<pre> <a href="qaction.html">QAction</a> * fileOpenAction;
</pre><pre> fileOpenAction = new <a href="qaction.html">QAction</a>( "Open File", QPixmap( fileopen ), "&Open",
CTRL+Key_O, this, "open" );
<a href="qobject.html#connect">connect</a>( fileOpenAction, SIGNAL( <a href="qaction.html#activated">activated</a>() ) , this, SLOT( choose() ) );
</pre>
<p> Here we create an action with an icon which will be used in any menu
and toolbar that the action is added to. We've also given the action
a menu name, '&Open', and a keyboard shortcut. The connection that we
have made will be used when the user clicks either the menu item <em>or</em> the toolbar button.
<p>
<pre> <a href="qpopupmenu.html">QPopupMenu</a> * file = new <a href="qpopupmenu.html">QPopupMenu</a>( this );
<a href="#menuBar">menuBar</a>()->insertItem( "&File", file );
</pre><pre> fileOpenAction-><a href="qaction.html#addTo">addTo</a>( file );
</pre>
<p> The extract above shows the creation of a popup menu. We add the menu
to the QMainWindow's menu bar and add our action.
<p>
<pre> <a href="qtoolbar.html">QToolBar</a> * fileTools = new <a href="qtoolbar.html">QToolBar</a>( this, "file operations" );
fileTools-><a href="qtoolbar.html#setLabel">setLabel</a>( "File Operations" );
fileOpenAction-><a href="qaction.html#addTo">addTo</a>( fileTools );
</pre>
<p> Here we create a new toolbar as a child of the QMainWindow and add
our action to the toolbar.
<p> We'll now explore the functionality offered by QMainWindow.
<p> The main window will take care of the dock areas, and the geometry
of the central widget, but all other aspects of the central widget
are left to you. QMainWindow automatically detects the creation of a
menu bar or status bar if you specify the QMainWindow as parent, or
you can use the provided <a href="#menuBar">menuBar</a>() and <a href="#statusBar">statusBar</a>() functions.
The functions menuBar() and statusBar() create a suitable widget if one doesn't
exist, and update the window's layout to make space.
<p> QMainWindow provides a <a href="qtooltipgroup.html">QToolTipGroup</a> connected to the status bar.
The function <a href="#toolTipGroup">toolTipGroup</a>() provides access to the default QToolTipGroup.
It isn't possible to set a different tool tip group.
<p> New dock windows and toolbars can be added to a QMainWindow using
<a href="#addDockWindow">addDockWindow</a>(). Dock windows can be moved using <a href="#moveDockWindow">moveDockWindow</a>() and
removed with <a href="#removeDockWindow">removeDockWindow</a>(). QMainWindow allows default dock
window (toolbar) docking in all its dock areas (top, left, right,
bottom). You can use <a href="#setDockEnabled">setDockEnabled</a>() to enable and disable docking
areas for dock windows. When adding or moving dock windows you can
specify their 'edge' (dock area). The currently available edges are:
<a href="qt.html#Dock-enum">Top</a>, <a href="qt.html#Dock-enum">Left</a>, <a href="qt.html#Dock-enum">Right</a>, <a href="qt.html#Dock-enum">Bottom</a>, <a href="qt.html#Dock-enum">Minimized</a> (effectively a
'hidden' dock area) and <a href="qt.html#Dock-enum">TornOff</a> (floating). See <a href="qt.html#Dock-enum">Qt::Dock</a> for
an explanation of these areas. Note that the *ToolBar functions are
included for backward compatibility, all new code should use the
*DockWindow functions. QToolbar is a subclass of <a href="qdockwindow.html">QDockWindow</a> so all
functions that work with dock windows work on toolbars in the same
way. If the user minimizes a dock window by clicking the dock window's
window handle then the dock window is moved to the <a href="qt.html#Dock-enum">Minimized</a> dock
area. If the user clicks the close button, then the dock window is
hidden and can only be shown again by using the
<a href="#dwm">dock window menu</a>.
<p> Some functions change the appearance of a QMainWindow globally:
<ul>
<li>QDockWindow::setHorizontalStretchable() and
<a href="qdockwindow.html#setVerticalStretchable">QDockWindow::setVerticalStretchable</a>() are used to make specific dock
windows or toolbars stretchable.
<li>setUsesBigPixmaps() is used to set whether tool buttons should
draw small or large pixmaps (see <a href="qiconset.html">QIconSet</a> for more information).
<li>setUsesTextLabel() is used to set whether tool buttons
should display a textual label in addition to pixmaps
(see <a href="qtoolbutton.html">QToolButton</a> for more information).
</ul>
<p> The user can drag dock windows into any enabled docking area. Dock
windows can also be dragged <em>within</em> a docking area, for example to
rearrange the order of some toolbars. Dock windows can also be
dragged outside any docking area (undocked or 'floated'). Being
able to drag dock windows can be enabled (the default) and disabled
using <a href="#setDockWindowsMovable">setDockWindowsMovable</a>(). <a name="dwm">If the user clicks the
close button on a floating dock window then the dock window will
disappear.</a> To get the dock window back the user must right click
a dock area, to pop up the dock window menu, then click the name of
the dock window they want to restore. Visible dock windows have a
tick by their name in the dock window menu.
The dock window menu is created automatically as required by
<a href="#createDockWindowMenu">createDockWindowMenu</a>(). Since it may not always be appropriate for a
dock window to appear on this menu the <a href="#setAppropriate">setAppropriate</a>() function is
used to inform the main window whether or not the dock window menu
should include a particular dock window. Double clicking a dock
window handle (usually on the left-hand side of the dock
window) undocks (floats) the dock window. Double clicking a floating
dock window's titlebar will dock the floating dock window.
<p> The <a href="qt.html#Dock-enum">Minimized</a> edge is a hidden dock area. If this dock area is
enabled the user can hide (minimize) a dock window or show (restore)
a minimized dock window by clicking the dock window handle. If the
user hovers the mouse cursor over one of the handles, the caption of
the dock window is displayed in a tool tip (see
<a href="qwidget.html#caption">QDockWindow::caption</a>() or <a href="qtoolbar.html#label">QToolBar::label</a>()), so if you enable the
<a href="qt.html#Dock-enum">Minimized</a> dock area, it is best to specify a meaningful caption
or label for each dock window. To minimize a dock window
programmatically use <a href="#moveDockWindow">moveDockWindow</a>() with an edge of <a href="qt.html#Dock-enum">Minimized</a>.
<p> Dock windows are moved transparently by default, i.e.
during the drag an outline rectangle is drawn on the screen
representing the position of the dock window as it moves. If you
want the dock window to be shown normally whilst it is moved use
<a href="#setOpaqueMoving">setOpaqueMoving</a>().
<p> The location of a dock window, i.e. its dock area and position
within the dock area, can be determined by calling <a href="#getLocation">getLocation</a>().
Movable dock windows can be lined up to minimize wasted space with
<a href="#lineUpDockWindows">lineUpDockWindows</a>(). Pointers to the dock areas are available from
<a href="#topDock">topDock</a>(), <a href="#leftDock">leftDock</a>(), <a href="#rightDock">rightDock</a>() and <a href="#bottomDock">bottomDock</a>(). A customize
menu item is added to the pop up dock window menu if
<a href="#isCustomizable">isCustomizable</a>() returns TRUE; it returns FALSE by default.
Reimplement isCustomizable() and <a href="#customize">customize</a>() if you want to offer
this extra menu item, for example, to allow the user to change
settings relating to the main window and its toolbars and dock
windows.
<p> The main window's menu bar is fixed (at the top) by default. If you
want a movable menu bar, create a <a href="qmenubar.html">QMenuBar</a> as a stretchable widget
inside its own movable dock window and restrict this
dock window to only live within the <a href="qt.html#Dock-enum">Top</a> or <a href="qt.html#Dock-enum">Bottom</a> dock:
<p> <pre>
<a href="qtoolbar.html">QToolBar</a> *tb = new <a href="qtoolbar.html">QToolBar</a>( this );
<a href="#addDockWindow">addDockWindow</a>( tb, tr( "Menubar" ), Top, FALSE );
<a href="qmenubar.html">QMenuBar</a> *mb = new <a href="qmenubar.html">QMenuBar</a>( tb );
mb-><a href="qframe.html#setFrameStyle">setFrameStyle</a>( QFrame::NoFrame );
tb-><a href="qtoolbar.html#setStretchableWidget">setStretchableWidget</a>( mb );
<a href="#setDockEnabled">setDockEnabled</a>( tb, Left, FALSE );
<a href="#setDockEnabled">setDockEnabled</a>( tb, Right, FALSE );
</pre>
<p> An application with multiple dock windows can choose to save the
current dock window layout in order to restore it later, e.g. in the
next session. You can do this by using the streaming operators for
QMainWindow.
<p> To save the layout and positions of all the dock windows do this:
<p> <pre>
<a href="qfile.html">QFile</a> f( filename );
if ( f.<a href="qfile.html#open">open</a>( <a href="qfile.html#open">IO_WriteOnly</a> ) ) {
<a href="qtextstream.html">QTextStream</a> ts( &f );
ts << *mainWindow;
f.<a href="qfile.html#close">close</a>();
}
</pre>
<p> To restore the dock window positions and sizes (normally when the
application is next started), do following:
<p> <pre>
<a href="qfile.html">QFile</a> f( filename );
if ( f.<a href="qfile.html#open">open</a>( <a href="qfile.html#open">IO_ReadOnly</a> ) ) {
<a href="qtextstream.html">QTextStream</a> ts( &f );
ts >> *mainWindow;
f.<a href="qfile.html#close">close</a>();
}
</pre>
<p> The <a href="qsettings.html">QSettings</a> class can be used in conjunction with the streaming
operators to store the application's settings.
<p> QMainWindow's management of dock windows and toolbars is done
transparently behind-the-scenes by <a href="qdockarea.html">QDockArea</a>.
<p> For multi-document interfaces (MDI), use a <a href="qworkspace.html">QWorkspace</a> as the central
widget.
<p> Adding dock windows, e.g. toolbars, to QMainWindow's dock areas is
straightforward. If the supplied dock areas are not sufficient for
your application we suggest that you create a <a href="qwidget.html">QWidget</a> subclass and add
your own dock areas (see <a href="qdockarea.html">QDockArea</a>) to the subclass since
QMainWindow provides functionality specific to the standard dock areas
it provides.
<p> <img src=qmainwindow-m.png> <img src=qmainwindow-w.png>
<p> <p>See also <a href="qtoolbar.html">QToolBar</a>, <a href="qdockwindow.html">QDockWindow</a>, <a href="qstatusbar.html">QStatusBar</a>, <a href="qaction.html">QAction</a>, <a href="qmenubar.html">QMenuBar</a>, <a href="qpopupmenu.html">QPopupMenu</a>, <a href="qtooltipgroup.html">QToolTipGroup</a>, <a href="qdialog.html">QDialog</a> and <a href="application.html">Main Window and Related Classes</a>.
<hr><h2>Member Type Documentation</h2>
<h3 class=fn><a name="DockWindows-enum"></a>QMainWindow::DockWindows</h3>
<p> Right-clicking a dock area will pop-up the dock window menu
(<a href="#createDockWindowMenu">createDockWindowMenu</a>() is called automatically). When called in
code you can specify what items should appear on the menu with this
enum.
<ul>
<li><tt>QMainWindow::OnlyToolBars</tt> - The menu will list all the toolbars,
but not any other dock windows.
<li><tt>QMainWindow::NoToolBars</tt> - The menu will list dock windows but not toolbars.
<li><tt>QMainWindow::AllDockWindows</tt> - The menu will list all toolbars and other dock
windows. (This is the default.)
</ul><p>
<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="QMainWindow"></a>QMainWindow::QMainWindow ( <a href="qwidget.html">QWidget</a> * parent = 0, const char * name = 0, WFlags f = WType_TopLevel )
</h3> Constructs an empty main window. The <em>parent</em>, <em>name</em> and
<a href="qt.html#WidgetFlags">widget flags</a> <em>f</em>, are passed to the <a href="qwidget.html">QWidget</a> constructor.
<p> By default, the widget flags are set to WType_TopLevel rather than 0 as it is
with QWidget. If you don't want your QMainWindow to be a top level
widget then you will need to set <em>f</em> to 0.
<h3 class=fn><a name="~QMainWindow"></a>QMainWindow::~QMainWindow ()
</h3> Destroys the object and frees any allocated resources.
<p>
<h3 class=fn>void <a name="addDockWindow"></a>QMainWindow::addDockWindow ( <a href="qdockwindow.html">QDockWindow</a> * dockWindow, <a href="qt.html#Dock-enum">Dock</a> edge = DockTop, bool newLine = FALSE )<tt> [virtual]</tt>
</h3> Adds <em>dockWindow</em> to the <em>edge</em> dock area.
<p> If <em>newLine</em> is FALSE (the default) then the <em>dockWindow</em> is added at
the end of the <em>edge</em>. For vertical edges the end is at the bottom,
for horizontal edges (including <a href="qt.html#Dock-enum">Minimized</a>) the end is at the
right. If <em>newLine</em> is TRUE a new line of dock windows is started
with <em>dockWindow</em> as the first (left-most and top-most) dock
window.
<p> If <em>dockWindow</em> is managed by another main window, it is first
removed from that window.
<h3 class=fn>void <a name="addDockWindow-2"></a>QMainWindow::addDockWindow ( <a href="qdockwindow.html">QDockWindow</a> * dockWindow, const <a href="qstring.html">QString</a> & label, <a href="qt.html#Dock-enum">Dock</a> edge = DockTop, bool newLine = FALSE )<tt> [virtual]</tt>
</h3> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Adds <em>dockWindow</em> to the dock area with label <em>label</em>.
<p> If <em>newLine</em> is FALSE (the default) the <em>dockWindow</em> is added at
the end of the <em>edge</em>. For vertical edges the end is at the bottom,
for horizontal edges (including <a href="qt.html#Dock-enum">Minimized</a>) the end is at the
right. If <em>newLine</em> is TRUE a new line of dock windows is started
with <em>dockWindow</em> as the first (left-most and top-most) dock
window.
<p> If <em>dockWindow</em> is managed by another main window, it is first
removed from that window.
<h3 class=fn>void <a name="addToolBar"></a>QMainWindow::addToolBar ( <a href="qdockwindow.html">QDockWindow</a> *, <a href="qt.html#Dock-enum">Dock</a> = DockTop, bool newLine = FALSE )
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p>
<h3 class=fn>void <a name="addToolBar-2"></a>QMainWindow::addToolBar ( <a href="qdockwindow.html">QDockWindow</a> *, const <a href="qstring.html">QString</a> & label, <a href="qt.html#Dock-enum">Dock</a> = DockTop, bool newLine = FALSE )
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p>
<h3 class=fn>bool <a name="appropriate"></a>QMainWindow::appropriate ( <a href="qdockwindow.html">QDockWindow</a> * dw ) const
</h3>
Returns TRUE if it is appropriate to include a menu item listing
the <em>dw</em> dock window on the dock window menu. Otherwise
returns FALSE.
<p> The user is able to change the state (show or hide) a dock window
that has a menu item by clicking the item.
<p> Call <a href="#setAppropriate">setAppropriate</a>() to indicate whether or not a particular dock
window should appear on the popup menu.
<p> <p>See also <a href="#setAppropriate">setAppropriate</a>().
<h3 class=fn><a href="qdockarea.html">QDockArea</a> * <a name="bottomDock"></a>QMainWindow::bottomDock () const
</h3> Returns a pointer the <a href="qt.html#Dock-enum">Bottom</a> dock area
<p> <p>See also <a href="#topDock">topDock</a>(), <a href="#leftDock">leftDock</a>() and <a href="#rightDock">rightDock</a>().
<h3 class=fn><a href="qwidget.html">QWidget</a> * <a name="centralWidget"></a>QMainWindow::centralWidget () const
</h3> Returns a pointer to the main window's central widget.
<p> The central widget is surrounded by the left, top, right and bottom
dock areas. The menu bar is above the top dock area.
<p> <p>See also <a href="#setCentralWidget">setCentralWidget</a>().
<p>Example: <a href="qfd-example.html#x761">qfd/qfd.cpp</a>.
<h3 class=fn>void <a name="childEvent"></a>QMainWindow::childEvent ( <a href="qchildevent.html">QChildEvent</a> * e )<tt> [virtual protected]</tt>
</h3>
Monitors events, recieved in <em>e</em>, to ensure the layout is updated.
<p>Reimplemented from <a href="qobject.html#childEvent">QObject</a>.
<h3 class=fn><a href="qpopupmenu.html">QPopupMenu</a> * <a name="createDockWindowMenu"></a>QMainWindow::createDockWindowMenu ( <a href="qmainwindow.html#DockWindows-enum">DockWindows</a> dockWindows = AllDockWindows ) const
</h3> Creates the dock window menu which contains all toolbars (if <em>dockWindows</em> is <a href="#DockWindows-enum">OnlyToolBars</a> ), all dock windows (if <em>dockWindows</em> is <a href="#DockWindows-enum">NoToolBars</a>) or all toolbars and dock windows ( if
<em>dockWindows</em> is <a href="#DockWindows-enum">AllDockWindows</a> - the default).
<p> This function is called internally when necessary, e.g. when the user
right clicks a dock area (providing <a href="#isDockMenuEnabled">isDockMenuEnabled</a>() returns TRUE).
You may reimplement this function if you wish to customize the
behaviour.
<p> The menu items representing the toolbars and dock windows are checkable.
The visible dock windows are checked and the hidden dock windows are
unchecked. The user can click a menu item to change its state (show
or hide the dock window).
<p> The list and the state are always kept up-to-date.
<p> Toolbars and dock windows which are not appropriate in the current
context (see <a href="#setAppropriate">setAppropriate</a>()) are not listed in the menu.
<p> The menu also has a menu item for lining up the dock windows.
<p> If <a href="#isCustomizable">isCustomizable</a>() returns TRUE, a Customize menu item is added to
the menu, which if clicked will call <a href="#customize">customize</a>(). The isCustomizable()
function we provide returns FALSE and customize() does nothing, so
they must be reimplemented in a subclass to be useful.
<h3 class=fn>void <a name="customize"></a>QMainWindow::customize ()<tt> [virtual slot]</tt>
</h3> This function is called when the user clicks the Customize menu item
on the dock window menu.
<p> The customize menu item will only appear if <a href="#isCustomizable">isCustomizable</a>() returns
TRUE (it returns FALSE by default).
<p> The function is intended, for example, to provide the user a means
of telling the application that they wish to customize the main
window, dock windows or dock areas.
<p> The default implementation does nothing, but this may change in
later Qt versions. In view of this the Customize menu item is not
shown on the right-click menu by default. If you want the item to
appear then reimplement isCustomizable() to return TRUE.
<p> <p>See also <a href="#isCustomizable">isCustomizable</a>().
<h3 class=fn>void <a name="dockWindowPositionChanged"></a>QMainWindow::dockWindowPositionChanged ( <a href="qdockwindow.html">QDockWindow</a> * dockWindow )<tt> [signal]</tt>
</h3>
<p> This signal is emitted when the <em>dockWindow</em> has changed its position.
A change in position occurs when a dock window is moved within its
dock area or moved to another dock area (including the <a href="qt.html#Dock-enum">Minimized</a>
and <tt>TearOff</tt> dock areas).
<p> <p>See also <a href="#getLocation">getLocation</a>().
<h3 class=fn><a href="qptrlist.html">QPtrList</a><QDockWindow> <a name="dockWindows"></a>QMainWindow::dockWindows ( <a href="qt.html#Dock-enum">Dock</a> dock ) const
</h3> Returns a list of all the dock windows which are in the <em>dock</em>
dock area, regardless of their state.
<p> For example, the <a href="qt.html#Dock-enum">TornOff</a> dock area may contain closed dock windows
but these are returned along with the visible dock windows.
<h3 class=fn><a href="qptrlist.html">QPtrList</a><QDockWindow> <a name="dockWindows-2"></a>QMainWindow::dockWindows () const
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Returns the list of dock windows which belong to this main window,
regardless of which dock area they are in or what their state is,
(e.g. irrespective of whether they are visible or not).
<h3 class=fn>bool <a name="dockWindowsMovable"></a>QMainWindow::dockWindowsMovable () const
</h3><p>Returns TRUE if the dock windows are movable; otherwise returns FALSE.
See the <a href="qmainwindow.html#dockWindowsMovable-prop">"dockWindowsMovable"</a> property for details.
<h3 class=fn>bool <a name="getLocation"></a>QMainWindow::getLocation ( <a href="qdockwindow.html">QDockWindow</a> * dw, <a href="qt.html#Dock-enum">Dock</a> & dock, int & index, bool & nl, int & extraOffset ) const
</h3>
Finds the location of the dock window <em>dw</em>.
<p> If the <em>dw</em> dock window is found in the main window the function
returns TRUE and populates the <em>dock</em> variable with the dw's
dock area and the <em>index</em> with the dw's position within the dock
area. It also sets <em>nl</em> to TRUE if the <em>dw</em> begins a new line
(otherwise FALSE), and <em>extraOffset</em> with the dw's offset.
<p> If the <em>dw</em> dock window is not found then the function returns FALSE and
the state of <em>dock</em>, <em>index</em>, <em>nl</em> and <em>extraOffset</em> is
undefined.
<p> If you want to save and restore dock window positions then use
<a href="#operator-gt-gt">operator>></a>() and <a href="#operator-lt-lt">operator<<</a>().
<p> <p>See also <a href="#operator-gt-gt">operator>></a>() and <a href="#operator-lt-lt">operator<<</a>().
<p>
<h3 class=fn>bool <a name="hasDockWindow"></a>QMainWindow::hasDockWindow ( <a href="qdockwindow.html">QDockWindow</a> * dw )
</h3> Returns TRUE if <em>dw</em> is a dock window known to the main window,
otherwise returns FALSE.
<h3 class=fn>bool <a name="isCustomizable"></a>QMainWindow::isCustomizable () const<tt> [virtual]</tt>
</h3>
Returns TRUE if the dock area dock window menu includes the
Customize menu item (which calls customize when clicked). Returns
FALSE by default, i.e. the popup menu will not contain a Customize
menu item. You will need to reimplement this function and set it
to return TRUE if you wish the user to be able to see the dock window
menu.
<p> <p>See also <a href="#customize">customize</a>().
<h3 class=fn>bool <a name="isDockEnabled"></a>QMainWindow::isDockEnabled ( <a href="qt.html#Dock-enum">Dock</a> dock ) const
</h3> Returns TRUE if the <em>dock</em> dock area is enabled, i.e. it can accept
user dragged dock windows; otherwise returns FALSE.
<p> <p>See also <a href="#setDockEnabled">setDockEnabled</a>().
<h3 class=fn>bool <a name="isDockEnabled-2"></a>QMainWindow::isDockEnabled ( <a href="qdockarea.html">QDockArea</a> * area ) const
</h3> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Returns TRUE if <em>area</em> is enabled, i.e. it can accept user dragged
dock windows; otherwise returns FALSE.
<p> <p>See also <a href="#setDockEnabled">setDockEnabled</a>().
<h3 class=fn>bool <a name="isDockEnabled-3"></a>QMainWindow::isDockEnabled ( <a href="qdockwindow.html">QDockWindow</a> * tb, <a href="qt.html#Dock-enum">Dock</a> dock ) const
</h3> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Returns TRUE if <em>dock</em> is enabled for the dock window <em>tb</em>,
otherwise returns FALSE.
<p> <p>See also <a href="#setDockEnabled">setDockEnabled</a>().
<h3 class=fn>bool <a name="isDockEnabled-4"></a>QMainWindow::isDockEnabled ( <a href="qdockwindow.html">QDockWindow</a> * dw, <a href="qdockarea.html">QDockArea</a> * area ) const
</h3> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Returns TRUE if <em>area</em> is enabled for the dock window <em>dw</em>,
otherwise returns FALSE.
<p> <p>See also <a href="#setDockEnabled">setDockEnabled</a>().
<h3 class=fn>bool <a name="isDockMenuEnabled"></a>QMainWindow::isDockMenuEnabled () const
</h3>
<p> Returns TRUE, if the dock window menu is enabled; otherwise returns
FALSE.
<p> The menu lists the (<a href="#appropriate">appropriate</a>()) dock windows (which may be shown
or hidden), and has a "Line Up Dock Windows" menu item. It will also have
a "Customize" menu item if <a href="#isCustomizable">isCustomizable</a>() returns TRUE.
<p> <p>See also <a href="#setDockEnabled">setDockEnabled</a>(), <a href="#lineUpDockWindows">lineUpDockWindows</a>(), <a href="#appropriate">appropriate</a>() and <a href="#setAppropriate">setAppropriate</a>().
<h3 class=fn><a href="qdockarea.html">QDockArea</a> * <a name="leftDock"></a>QMainWindow::leftDock () const
</h3> Returns the <a href="qt.html#Dock-enum">Left</a> dock area
<p> <p>See also <a href="#rightDock">rightDock</a>(), <a href="#topDock">topDock</a>() and <a href="#bottomDock">bottomDock</a>().
<h3 class=fn>void <a name="lineUpDockWindows"></a>QMainWindow::lineUpDockWindows ( bool keepNewLines = FALSE )
</h3>
This function will line up dock windows within the visible dock
areas (<a href="qt.html#Dock-enum">Top</a>, <a href="qt.html#Dock-enum">Left</a>, <a href="qt.html#Dock-enum">Right</a> and <a href="qt.html#Dock-enum">Bottom</a>) as compactly as
possible.
<p> If <em>keepNewLines</em> is TRUE, all dock windows stay on their original
lines. If <em>keepNewLines</em> is FALSE then newlines may be removed to achieve
the most compact layout possible.
<p> The method only works if <a href="#dockWindowsMovable">dockWindowsMovable</a>() returns TRUE.
<h3 class=fn>void <a name="lineUpToolBars"></a>QMainWindow::lineUpToolBars ( bool keepNewLines = FALSE )
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p>
<h3 class=fn>void <a name="menuAboutToShow"></a>QMainWindow::menuAboutToShow ()<tt> [protected slot]</tt>
</h3> This slot is called from the aboutToShow() signal of the default
dock menu of the mainwindow. The default implementation initializes
the menu with all dock windows and toolbars in this slot.
<p> If you want to do small adjustments to the menu, you can do it in
this slot. Else reimplement <a href="#createDockWindowMenu">createDockWindowMenu</a>().
<h3 class=fn><a href="qmenubar.html">QMenuBar</a> * <a name="menuBar"></a>QMainWindow::menuBar () const
</h3> Returns the menu bar for this window.
<p> If there isn't one, then <a href="#menuBar">menuBar</a>() creates an empty menu bar.
<p> <p>See also <a href="#statusBar">statusBar</a>().
<h3 class=fn>void <a name="moveDockWindow"></a>QMainWindow::moveDockWindow ( <a href="qdockwindow.html">QDockWindow</a> * dockWindow, <a href="qt.html#Dock-enum">Dock</a> edge = DockTop )<tt> [virtual]</tt>
</h3>
Moves <em>dockWindow</em> to the end of the <em>edge</em>.
<p> For vertical edges the end is at the bottom, for horizontal edges
(including <a href="qt.html#Dock-enum">Minimized</a>) the end is at the right.
<p> If <em>dockWindow</em> is managed by another main window, it is first
removed from that window.
<h3 class=fn>void <a name="moveDockWindow-2"></a>QMainWindow::moveDockWindow ( <a href="qdockwindow.html">QDockWindow</a> * dockWindow, <a href="qt.html#Dock-enum">Dock</a> edge, bool nl, int index, int extraOffset = -1 )<tt> [virtual]</tt>
</h3> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> Moves <em>dockWindow</em> to position <em>index</em> of <em>edge</em>.
<p> Any dock windows with positions <em>index</em> or higher have
their position number incremented and any of these on the same line
are moved right (down for vertical dock areas) to make room.
<p> If <em>nl</em> is TRUE, a new dock window line is created below the line
in which the moved dock window appears and the moved dock window,
with any others with higher positions on the same line, is moved
to this new line.
<p> The <em>extraOffset</em> is the space to put between the left side of the
dock area (top side for vertical dock areas) and the dock window.
(This is mostly used for restoring dock windows to the positions the
user has dragged them to.)
<p> If <em>dockWindow</em> is managed by another main window, it is first
removed from that window.
<h3 class=fn>void <a name="moveToolBar"></a>QMainWindow::moveToolBar ( <a href="qdockwindow.html">QDockWindow</a> *, <a href="qt.html#Dock-enum">Dock</a> = DockTop )
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p>
<h3 class=fn>void <a name="moveToolBar-2"></a>QMainWindow::moveToolBar ( <a href="qdockwindow.html">QDockWindow</a> *, <a href="qt.html#Dock-enum">Dock</a>, bool nl, int index, int extraOffset = -1 )
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p> This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p>
<h3 class=fn>bool <a name="opaqueMoving"></a>QMainWindow::opaqueMoving () const
</h3><p>Returns TRUE if dock windows are moved opaquely; otherwise returns FALSE.
See the <a href="qmainwindow.html#opaqueMoving-prop">"opaqueMoving"</a> property for details.
<h3 class=fn>void <a name="pixmapSizeChanged"></a>QMainWindow::pixmapSizeChanged ( bool )<tt> [signal]</tt>
</h3>
<p> This signal is called whenever the <a href="#setUsesBigPixmaps">setUsesBigPixmaps</a>() is called
with a value different to the current setting. All
widgets that should respond to such changes, e.g. toolbar buttons,
must connect to this signal.
<h3 class=fn>void <a name="removeDockWindow"></a>QMainWindow::removeDockWindow ( <a href="qdockwindow.html">QDockWindow</a> * dockWindow )<tt> [virtual]</tt>
</h3>
Removes <em>dockWindow</em> from the main window's docking area, provided <em>dockWindow</em> is non-null and managed by this main window.
<h3 class=fn>void <a name="removeToolBar"></a>QMainWindow::removeToolBar ( <a href="qdockwindow.html">QDockWindow</a> * )
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p>
<h3 class=fn><a href="qdockarea.html">QDockArea</a> * <a name="rightDock"></a>QMainWindow::rightDock () const
</h3> Returns the <a href="qt.html#Dock-enum">Right</a> dock area
<p> <p>See also <a href="#leftDock">leftDock</a>(), <a href="#topDock">topDock</a>() and <a href="#bottomDock">bottomDock</a>().
<h3 class=fn>bool <a name="rightJustification"></a>QMainWindow::rightJustification () const
</h3><p>Returns TRUE if the main window right-justifies its dock windows; otherwise returns FALSE.
See the <a href="qmainwindow.html#rightJustification-prop">"rightJustification"</a> property for details.
<h3 class=fn>void <a name="setAppropriate"></a>QMainWindow::setAppropriate ( <a href="qdockwindow.html">QDockWindow</a> * dw, bool a )<tt> [virtual slot]</tt>
</h3>
Use this function to control whether or not the <em>dw</em> dock window's
caption should appear as a menu item on the dock window menu
that lists the dock windows.
<p> If <em>a</em> is TRUE then the <em>dw</em> will appear as a menu item on the
dock window menu. The user is able to change the state
(show or hide) a dock window that has a menu item by clicking the
item; depending on the state of your application, this may or may
not be appropriate. If <em>a</em> is FALSE the <em>dw</em> will not appear
on the popup menu.
<p> <p>See also <a href="#showDockMenu">showDockMenu</a>(), <a href="#isCustomizable">isCustomizable</a>() and <a href="#customize">customize</a>().
<p>
<h3 class=fn>void <a name="setCentralWidget"></a>QMainWindow::setCentralWidget ( <a href="qwidget.html">QWidget</a> * w )<tt> [virtual]</tt>
</h3> Sets the central widget for this window to <em>w</em>.
<p> The central widget is surrounded by the left, top, right and bottom
dock areas. The menu bar is above the top dock area.
<p> <p>See also <a href="#centralWidget">centralWidget</a>().
<h3 class=fn>void <a name="setDockEnabled"></a>QMainWindow::setDockEnabled ( <a href="qt.html#Dock-enum">Dock</a> dock, bool enable )<tt> [virtual]</tt>
</h3>
If <em>enable</em> is TRUE then users can dock windows in the <em>dock</em>
area. If <em>enable</em> is FALSE users cannot dock windows in the <em>dock</em> area.
<p> Users can dock (drag) dock windows into any enabled dock area.
<h3 class=fn>void <a name="setDockEnabled-2"></a>QMainWindow::setDockEnabled ( <a href="qdockwindow.html">QDockWindow</a> * dw, <a href="qt.html#Dock-enum">Dock</a> dock, bool enable )<tt> [virtual]</tt>
</h3>
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
<p> If <em>enable</em> is TRUE then users can dock the <em>dw</em> dock window in
the <em>dock</em> area. If <em>enable</em> is FALSE users cannot dock the <em>dw</em>
dock window in the <em>dock</em> area.
<p> In general users can dock (drag) dock windows into any enabled dock
area. Using this function particular dock areas can be enabled (or
disabled) as docking points for particular dock windows.
<h3 class=fn>void <a name="setDockMenuEnabled"></a>QMainWindow::setDockMenuEnabled ( bool b )<tt> [virtual slot]</tt>
</h3>
If <em>b</em> is TRUE then right clicking on a dock window or dock area
will pop up the dock window menu. If <em>b</em> is FALSE right
clicking a dock window or dock area will not pop up the menu.
<p> The menu lists the (<a href="#appropriate">appropriate</a>()) dock windows (which may be shown or
hidden), and has a line up dock window item. It will also have a
Customize menu item if <a href="#isCustomizable">isCustomizable</a>() returns TRUE.
<p> <p>See also <a href="#lineUpDockWindows">lineUpDockWindows</a>() and <a href="#isDockMenuEnabled">isDockMenuEnabled</a>().
<h3 class=fn>void <a name="setDockWindowsMovable"></a>QMainWindow::setDockWindowsMovable ( bool )<tt> [virtual slot]</tt>
</h3><p>Sets whether the dock windows are movable.
See the <a href="qmainwindow.html#dockWindowsMovable-prop">"dockWindowsMovable"</a> property for details.
<h3 class=fn>void <a name="setOpaqueMoving"></a>QMainWindow::setOpaqueMoving ( bool )<tt> [virtual slot]</tt>
</h3><p>Sets whether dock windows are moved opaquely.
See the <a href="qmainwindow.html#opaqueMoving-prop">"opaqueMoving"</a> property for details.
<h3 class=fn>void <a name="setRightJustification"></a>QMainWindow::setRightJustification ( bool )<tt> [virtual slot]</tt>
</h3><p>Sets whether the main window right-justifies its dock windows.
See the <a href="qmainwindow.html#rightJustification-prop">"rightJustification"</a> property for details.
<h3 class=fn>void <a name="setToolBarsMovable"></a>QMainWindow::setToolBarsMovable ( bool )<tt> [slot]</tt>
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p>
<h3 class=fn>void <a name="setUpLayout"></a>QMainWindow::setUpLayout ()<tt> [virtual protected slot]</tt>
</h3> Sets up the geometry management of the window. It is called
automatically when needed, so you shouldn't need to call it.
<h3 class=fn>void <a name="setUsesBigPixmaps"></a>QMainWindow::setUsesBigPixmaps ( bool )<tt> [virtual slot]</tt>
</h3><p>Sets whether big pixmaps are enabled.
See the <a href="qmainwindow.html#usesBigPixmaps-prop">"usesBigPixmaps"</a> property for details.
<h3 class=fn>void <a name="setUsesTextLabel"></a>QMainWindow::setUsesTextLabel ( bool )<tt> [virtual slot]</tt>
</h3><p>Sets whether text labels for toolbar buttons are enabled.
See the <a href="qmainwindow.html#usesTextLabel-prop">"usesTextLabel"</a> property for details.
<h3 class=fn>bool <a name="showDockMenu"></a>QMainWindow::showDockMenu ( const <a href="qpoint.html">QPoint</a> & globalPos )<tt> [virtual protected slot]</tt>
</h3> Shows the dock menu at the position <em>globalPos</em>. The menu lists the
dock windows so that they can be shown (or hidden), lined up, and
possibly customized.
<p> The default implementation uses the dock window menu which gets
created by <a href="#createDockWindowMenu">createDockWindowMenu</a>(). You can reimplement
createDockWindowMenu() if you want to use your own specialized popup
menu.
<h3 class=fn><a href="qstatusbar.html">QStatusBar</a> * <a name="statusBar"></a>QMainWindow::statusBar () const
</h3> Returns the status bar for this window. If there isn't one,
<a href="#statusBar">statusBar</a>() creates an empty status bar, and if necessary
a tool tip group too.
<p> <p>See also <a href="#menuBar">menuBar</a>() and <a href="#toolTipGroup">toolTipGroup</a>().
<p>Example: <a href="qfd-example.html#x762">qfd/qfd.cpp</a>.
<h3 class=fn>void <a name="toolBarPositionChanged"></a>QMainWindow::toolBarPositionChanged ( <a href="qtoolbar.html">QToolBar</a> * )<tt> [signal]</tt>
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p>
<h3 class=fn><a href="qptrlist.html">QPtrList</a><QToolBar> <a name="toolBars"></a>QMainWindow::toolBars ( <a href="qt.html#Dock-enum">Dock</a> dock ) const
</h3> Returns a list of all the toolbars which are in the <em>dock</em> dock
area, regardless of their state.
<p> For example, the <a href="qt.html#Dock-enum">TornOff</a> dock area may contain closed toolbars but
these are returned along with the visible toolbars.
<p> <p>See also <a href="#dockWindows">dockWindows</a>().
<h3 class=fn>bool <a name="toolBarsMovable"></a>QMainWindow::toolBarsMovable () const
</h3>
<b>This function is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
<p>
<h3 class=fn><a href="qtooltipgroup.html">QToolTipGroup</a> * <a name="toolTipGroup"></a>QMainWindow::toolTipGroup () const
</h3> Returns the tool tip group for this window. If there isn't one,
<a href="#toolTipGroup">toolTipGroup</a>() creates an empty tool tip groups.
<p> <p>See also <a href="#menuBar">menuBar</a>() and <a href="#statusBar">statusBar</a>().
<h3 class=fn><a href="qdockarea.html">QDockArea</a> * <a name="topDock"></a>QMainWindow::topDock () const
</h3> Returns the <a href="qt.html#Dock-enum">Top</a> dock area
<p> <p>See also <a href="#bottomDock">bottomDock</a>(), <a href="#leftDock">leftDock</a>() and <a href="#rightDock">rightDock</a>().
<h3 class=fn>bool <a name="usesBigPixmaps"></a>QMainWindow::usesBigPixmaps () const
</h3><p>Returns TRUE if big pixmaps are enabled; otherwise returns FALSE.
See the <a href="qmainwindow.html#usesBigPixmaps-prop">"usesBigPixmaps"</a> property for details.
<h3 class=fn>bool <a name="usesTextLabel"></a>QMainWindow::usesTextLabel () const
</h3><p>Returns TRUE if text labels for toolbar buttons are enabled; otherwise returns FALSE.
See the <a href="qmainwindow.html#usesTextLabel-prop">"usesTextLabel"</a> property for details.
<h3 class=fn>void <a name="usesTextLabelChanged"></a>QMainWindow::usesTextLabelChanged ( bool )<tt> [signal]</tt>
</h3>
<p> This signal is called whenever the <a href="#setUsesTextLabel">setUsesTextLabel</a>() is called
with a value different to the current setting. All
widgets that should respond to such changes, e.g. toolbar buttons,
must connect to this signal.
<h3 class=fn>void <a name="whatsThis"></a>QMainWindow::whatsThis ()<tt> [virtual slot]</tt>
</h3>
Enters 'What's This?' question mode and returns immediately.
<p> This is the same as <a href="qwhatsthis.html#enterWhatsThisMode">QWhatsThis::enterWhatsThisMode</a>(), but
implemented as a main window object's slot. This way it can easily
be used for popup menus, for example:
<p> <pre>
<a href="qpopupmenu.html">QPopupMenu</a> * help = new <a href="qpopupmenu.html">QPopupMenu</a>( this );
help-><a href="qmenudata.html#insertItem">insertItem</a>( "What's &This", this , SLOT(<a href="#whatsThis">whatsThis</a>()), SHIFT+Key_F1);
</pre>
<p> <p>See also <a href="qwhatsthis.html#enterWhatsThisMode">QWhatsThis::enterWhatsThisMode</a>().
<p>
<hr><h2>Property Documentation</h2>
<h3 class=fn>bool <a name="dockWindowsMovable-prop"></a>dockWindowsMovable</h3> <p>This property holds whether the dock windows are movable.
<p>If TRUE (the default), the user will be able to move Movable dock
windows from one QMainWindow dock area to another, including the <tt>TearOff</tt> area (i.e. where the dock window floats freely as a window
in its own right), and the <a href="qt.html#Dock-enum">Minimized</a> area (where only the dock
window's handle is shown below the menu bar). Moveable dock windows
can also be moved within QMainWindow dock areas, i.e. to rearrange
them within a dock area.
<p> If FALSE the user will not be able to move any dock windows.
<p> By default dock windows are moved transparently (i.e. only an outline
rectangle is shown during the drag), but this setting can be changed
with <a href="#setOpaqueMoving">setOpaqueMoving</a>().
<p> <p>See also <a href="#setDockEnabled">setDockEnabled</a>() and <a href="#opaqueMoving-prop">opaqueMoving</a>.
<p>
<p>Set this property's value with <a href="#setDockWindowsMovable">setDockWindowsMovable</a>() and get this property's value with <a href="#dockWindowsMovable">dockWindowsMovable</a>().
<h3 class=fn>bool <a name="opaqueMoving-prop"></a>opaqueMoving</h3> <p>This property holds whether dock windows are moved opaquely.
<p>If TRUE the dock windows of the main window are shown
opaquely (i.e. it shows the toolbar as it looks when docked) when
moved. If FALSE (the default) they are shown transparently,
(i.e. as an outline rectangle).
<p>Set this property's value with <a href="#setOpaqueMoving">setOpaqueMoving</a>() and get this property's value with <a href="#opaqueMoving">opaqueMoving</a>().
<h3 class=fn>bool <a name="rightJustification-prop"></a>rightJustification</h3> <p>This property holds whether the main window right-justifies its dock windows.
<p>If disabled (the default), stretchable dock windows
are expanded, and non-stretchable dock windows are given the minimum
space they need. Since most dock windows are not stretchable, this
usually results in a unjustified right edge (or unjustified bottom edge for a
vertical dock area). If enabled, the main window will
right-justify its dock windows.
<p> <p>See also <a href="qdockwindow.html#setVerticalStretchable">QDockWindow::setVerticalStretchable</a>() and <a href="qdockwindow.html#setHorizontalStretchable">QDockWindow::setHorizontalStretchable</a>().
<p>Set this property's value with <a href="#setRightJustification">setRightJustification</a>() and get this property's value with <a href="#rightJustification">rightJustification</a>().
<h3 class=fn>bool <a name="usesBigPixmaps-prop"></a>usesBigPixmaps</h3> <p>This property holds whether big pixmaps are enabled.
<p>If FALSE (the default), the tool buttons will use small
pixmaps; otherwise big pixmaps will be used.
<p> Tool buttons and other widgets that wish to respond to this setting
are responsible for reading the correct state on startup, and for
connecting to the main window's widget's <a href="#pixmapSizeChanged">pixmapSizeChanged</a>() signal.
<p>Set this property's value with <a href="#setUsesBigPixmaps">setUsesBigPixmaps</a>() and get this property's value with <a href="#usesBigPixmaps">usesBigPixmaps</a>().
<h3 class=fn>bool <a name="usesTextLabel-prop"></a>usesTextLabel</h3> <p>This property holds whether text labels for toolbar buttons are enabled.
<p>If disabled (the default), the tool buttons will not use
text labels. If enabled, text labels will be used.
<p> Tool buttons and other widgets that wish to respond to this setting
are responsible for reading the correct state on startup, and for
connecting to the main window's widget's <a href="#usesTextLabelChanged">usesTextLabelChanged</a>()
signal.
<p> <p>See also <a href="qtoolbutton.html#usesTextLabel-prop">QToolButton::usesTextLabel</a>.
<p>Set this property's value with <a href="#setUsesTextLabel">setUsesTextLabel</a>() and get this property's value with <a href="#usesTextLabel">usesTextLabel</a>().
<hr><h2>Related Functions</h2>
<h3 class=fn><a href="qtextstream.html">QTextStream</a> & <a name="operator-lt-lt"></a>operator<< ( <a href="qtextstream.html">QTextStream</a> & ts, const <a href="qmainwindow.html">QMainWindow</a> & mainWindow )
</h3>
<p> Writes the layout (sizes and positions) of the dock windows in the
dock areas of the QMainWindow <em>mainWindow</em>, including <a href="qt.html#Dock-enum">Minimized</a> and <a href="qt.html#Dock-enum">TornOff</a> dock windows, to the text stream <em>ts</em>.
<p> This can be used, for example, in conjunction with <a href="qsettings.html">QSettings</a> to save
the user's layout.
<p> <p>See also <a href="#operator-gt-gt">operator>></a>().
<h3 class=fn><a href="qtextstream.html">QTextStream</a> & <a name="operator-gt-gt"></a>operator>> ( <a href="qtextstream.html">QTextStream</a> & ts, <a href="qmainwindow.html">QMainWindow</a> & mainWindow )
</h3>
<p> Reads the layout (sizes and positions) of the dock windows in the
dock areas of the QMainWindow <em>mainWindow</em> from the text stream, <em>ts</em>,
including <a href="qt.html#Dock-enum">Minimized</a> and <a href="qt.html#Dock-enum">TornOff</a> dock windows. Restores the
dock windows and dock areas to these sizes and positions. The layout
information must be in the format produced by <a href="#operator-lt-lt">operator<<</a>().
<p> This can be used, for example, in conjunction with <a href="qsettings.html">QSettings</a> to
restore the user's layout.
<p> <p>See also <a href="#operator-lt-lt">operator<<</a>().
<!-- eof -->
<hr><p>
This file is part of the <a href="index.html">Qt toolkit</a>.
Copyright © 1995-2001
<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
<table width=100% cellspacing=0 border=0><tr>
<td>Copyright © 2001
<a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a>
<td align=right><div align=right>Qt version 3.0.2</div>
</table></div></address></body>
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