The QWorkspace widget provides a workspace window that can
contain decorated windows, e.g. for MDI.
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Detailed Description
The QWorkspace widget provides a workspace window that can
contain decorated windows, e.g. for MDI.
MDI (multiple document interface) applications typically have one
main window with a menu bar and toolbar, and a central widget that
is a QWorkspace. The workspace itself contains zero, one or more
document windows, each of which is a widget.
The workspace itself is an ordinary Qt widget. It has a standard
constructor that takes a parent widget and an object name. The
parent window is usually a QMainWindow, but it need not be.
Document windows (i.e. MDI windows) are also ordinary Qt widgets
which have the workspace as their parent widget. When you call
show(), hide(), showMaximized(), setCaption(), etc. on a document
window, it is shown, hidden, etc. with a frame, caption, icon and
icon text, just as you'd expect. You can provide widget flags
which will be used for the layout of the decoration or the
behaviour of the widget itself.
To change or retrieve the geometry of MDI windows you must operate
on the MDI widget's parentWidget(). (The parentWidget() provides
access to the decorated window in which the MDI window's widget is
shown.)
A document window becomes active when it gets the keyboard focus.
You can also activate a window in code using setFocus(). The user
can activate a window by moving focus in the usual ways, for
example by clicking a window or by pressing Tab. The workspace
emits a signal windowActivated() when it detects the activation
change, and the function activeWindow() always returns a pointer
to the active document window.
The convenience function windowList() returns a list of all
document windows. This is useful to create a popup menu
"Windows" on the fly, for example.
QWorkspace provides two built-in layout strategies for child
windows: cascade() and tile(). Both are slots so you can easily
connect menu entries to them.
If you want your users to be able to work with document windows
larger than the actual workspace, set the scrollBarsEnabled
property to TRUE.
If the top-level window contains a menu bar and a document window
is maximised, QWorkspace moves the document window's minimize,
restore and close buttons from the document window's frame to the
workspace window's menu bar. It then inserts a window operations
menu at the far left of the menu bar.
See also Main Window and Related Classes and Organizers.
Member Type Documentation
QWorkspace::WindowOrder
Specifies the order in which windows are returned from windowList().
- QWorkspace::CreationOrder - The windows are returned in the order of their creation
- QWorkspace::StackingOrder - The windows are returned in the order of their stacking
Member Function Documentation
QWorkspace::QWorkspace ( QWidget * parent = 0, const char * name = 0 )
Constructs a workspace with a parent and a name.
QWorkspace::~QWorkspace ()
Destroys the workspace and frees any allocated resources.
void QWorkspace::activateNextWindow () [slot]
Activates the next window in the child window chain.
See also activatePrevWindow().
void QWorkspace::activatePrevWindow () [slot]
Activates the previous window in the child window chain.
See also activateNextWindow().
QWidget * QWorkspace::activeWindow () const
Returns the active window, or 0 if no window is active.
Example: mdi/application.cpp.
void QWorkspace::cascade () [slot]
Arranges all the child windows in a cascade pattern.
See also tile().
Example: mdi/application.cpp.
void QWorkspace::closeActiveWindow () [slot]
Closes the child window that is currently active.
See also closeAllWindows().
void QWorkspace::closeAllWindows () [slot]
Closes all child windows.
The windows are closed in random order. The operation stops if a
window does not accept the close event.
See also closeActiveWindow().
bool QWorkspace::scrollBarsEnabled () const
Returns TRUE if the workspace provides scrollbars; otherwise returns FALSE.
See the "scrollBarsEnabled" property for details.
void QWorkspace::setScrollBarsEnabled ( bool enable )
Sets whether the workspace provides scrollbars to enable.
See the "scrollBarsEnabled" property for details.
void QWorkspace::tile () [slot]
Arranges all child windows in a tile pattern.
See also cascade().
Example: mdi/application.cpp.
void QWorkspace::windowActivated ( QWidget * w ) [signal]
This signal is emitted when the window widget w becomes active.
Note that w can be null, and that more than one signal may be
emitted for a single activation event.
See also activeWindow() and windowList().
QWidgetList QWorkspace::windowList ( WindowOrder order ) const
Returns a list of all windows. If order is CreationOrder
(the default) the windows are listed in the order in which they
had been inserted into the workspace. If order is StackingOrder
the windows are listed in their stacking order, with the topmost window
being the last window in the list.
QWidgetList is the same as QPtrList.
See also QPtrList.
Example: mdi/application.cpp.
QWidgetList QWorkspace::windowList () const
This function is obsolete. It is provided to keep old source working. We strongly advise against using it in new code.
This is an overloaded member function, provided for convenience. It behaves essentially like the above function.
Property Documentation
bool scrollBarsEnabled
This property holds whether the workspace provides scrollbars.
If this property is set to TRUE, it is possible to resize child
windows over the right or the bottom edge out of the visible area
of the workspace. The workspace shows scrollbars to make it
possible for the user to access those windows. If this property is
set to FALSE (the default), resizing windows out of the visible
area of the workspace is not permitted.
Set this property's value with setScrollBarsEnabled() and get this property's value with scrollBarsEnabled().
This file is part of the Qt toolkit.
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