QXtWidget acts as a bridge between Xt and Qt. For utilizing old Xt
widgets, it can be a QWidget based on a Xt widget class. For
including Qt widgets in an existing Xt/Motif application, it can be
a special Xt widget class that is a QWidget. See the constructors
for the different behaviors.
This class is unsupported and has many known problems and
limitations. It is provided only to keep existing source working;
it should not be used in new code. Note: These problems will not
be fixed in future releases.
Below is an imcomplete list of know issues:
- Keyboard focus navigation is impossible when using QXtWidget.
The mouse must be used to focus widgets in both Qt and Xt/Motif
widgets. For example, when embedding a QXtWidget into an Xt/Motif
widget, key events will go to the QXtWidget (and its children) while
the mouse is over the QXtWidget, regardless of where Xt/Motif has
placed the focus.
- Reparenting does not work. You cannot use
QWidget::reparent(). This includes the functions
QWidget::showFullScreen() and QWidget::showNormal(), which use
QWidget::reparent().
Member Function Documentation
QXtWidget::QXtWidget ( const char * name, Widget parent, bool managed = FALSE )
Constructs a QXtWidget of the special Xt widget class known as
"QWidget" to the resource manager.
Use this constructor to utilize Qt widgets in an Xt/Motif
application. The QXtWidget is a QWidget, so you can create
subwidgets, layouts, etc. using Qt functionality.
The name is the object name passed to the QWidget constructor.
The widget's parent is parent.
If the managed parameter is TRUE and parent in not null,
XtManageChild it used to manage the child.
QXtWidget::QXtWidget ( const char * name, WidgetClass widget_class, QWidget * parent = 0, ArgList args = 0, Cardinal num_args = 0, bool managed = FALSE )
Constructs a QXtWidget of the given widget_class called name.
Use this constructor to utilize Xt or Motif widgets in a Qt
application. The QXtWidget looks and behaves
like the Xt class, but can be used like any QWidget.
Note that Xt requires that the most top level Xt widget is a shell.
This means, if parent is a QXtWidget, the widget_class can be
of any kind. If there isn't a parent or the parent is just a normal
QWidget, widget_class should be something like topLevelShellWidgetClass.
The arguments, args, num_args are passed on to XtCreateWidget.
If the managed parameter is TRUE and parent in not null,
XtManageChild it used to manage the child.
QXtWidget::~QXtWidget ()
Destructs the QXtWidget.
bool QXtWidget::isActiveWindow () const
Different from QWidget::isActiveWindow()
void QXtWidget::setActiveWindow () [virtual]
Implement a degree of focus handling for Xt widgets.
Reimplemented from QWidget.
bool QXtWidget::x11Event ( XEvent * e ) [virtual protected]
Reimplemented to produce the Xt effect of getting focus when the
mouse enters the widget. The event is passed in e.
Reimplemented from QWidget.
Widget QXtWidget::xtWidget () const
Returns the Xt widget equivalent for the Qt widget.
This file is part of the Qt toolkit.
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