QWorkspace Class Reference
[workspace module]

The QWorkspace widget provides a workspace window that can contain decorated windows, e.g. for MDI. More...

#include <qworkspace.h>

Inherits QWidget.

List of all member functions.

Public Members

QWorkspace ( QWidget * parent = 0, const char * name = 0 )
~QWorkspace ()
enum WindowOrder { CreationOrder, StackingOrder }
QWidget * activeWindow () const
QWidgetList windowList () const (obsolete)
QWidgetList windowList ( WindowOrder order ) const
bool scrollBarsEnabled () const
void setScrollBarsEnabled ( bool enable )

Public Slots

void cascade ()
void tile ()
void closeActiveWindow ()
void closeAllWindows ()
void activateNextWindow ()
void activatePrevWindow ()

Signals

void windowActivated ( QWidget * w )

Properties

bool scrollBarsEnabled - whether the workspace provides scrollbars

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.

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.

void QWorkspace::activatePrevWindow () `[slot]`

Activates the previous window in the child window chain.

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.

void QWorkspace::closeActiveWindow () `[slot]`

Closes the child window that is currently active.

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.

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.

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.

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().

Trademarks

Qt 3.3.8

QWorkspace Class Reference[workspace module]