XtRealizeWidget(3Xt) X11R5 XtRealizeWidget(3Xt)NAME
XtRealizeWidget, XtIsRealized, XtUnrealizeWidget - realize and unreal‐
ize widgets
SYNTAX
void XtRealizeWidget(w)
Widget w;
Boolean XtIsRealized(w)
Widget w;
void XtUnrealizeWidget(w)
Widget w;
ARGUMENTS
w Specifies the widget.
DESCRIPTION
If the widget is already realized, simply returns. Otherwise, it per‐
forms the following:
· Binds all action names in the widget's translation table to proce‐
dures (see Section 10.1.2).
· Makes a post-order traversal of the widget tree rooted at the
specified widget and calls the change_managed procedure of each
composite widget that has one or more managed children.
· Constructs an structure filled in with information derived from
the widget fields and calls the realize procedure for the widget,
which adds any widget-specific attributes and creates the X win‐
dow.
· If the widget is not a subclass of returns; otherwise, it contin‐
ues and performs the following:
- Descends recursively to each of the widget's managed children
and calls the realize procedures. Primitive widgets that
instantiate children are responsible for realizing those
children themselves.
- Maps all of the managed children windows that have
mapped_when_managed (If a widget is managed but
mapped_when_managed is the widget is allocated visual space
but is not displayed. Some people seem to like this to indi‐
cate certain states.)
If the widget is a top-level shell widget (that is, it has no parent),
and mapped_when_managed is maps the widget window.
The function returns if the widget has been realized, that is, if the
widget has a nonzero X window ID.
Some widget procedures (for example, set_values) might wish to operate
differently after the widget has been realized.
The function destroys the windows of an existing widget and all of its
children (recursively down the widget tree). To recreate the windows
at a later time, call again. If the widget was managed, it will be
unmanaged automatically before its window is freed.
SEE ALSOXtManageChildren(3Xt)
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
XtRealizeWidget(3Xt)