XtIsRealized

XtRealizeWidget(3Xt)		 XT FUNCTIONS		 XtRealizeWidget(3Xt)



NAME
       XtRealizeWidget, XtIsRealized, XtUnrealizeWidget - realize and unreal-
       ize widgets

SYNTAX
       void XtRealizeWidget(Widget w);

       Boolean XtIsRealized(Widget w);

       void XtUnrealizeWidget(Widget w);

ARGUMENTS
       w	 Specifies the widget.

DESCRIPTION
       If the widget is already realized, XtRealizeWidget simply returns.
       Otherwise, it performs the following:

       ·    Binds all action names in the widget’s translation table to pro-
	    cedures (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 XSetWindowAttributes structure filled in with
	    information derived from the Core widget fields and calls the
	    realize procedure for the widget, which adds any widget-specific
	    attributes and creates the X window.

       ·    If the widget is not a subclass of compositeWidgetClass,
	    XtRealizeWidget returns; otherwise, it continues and performs the
	    following:

	    -	 Descends recursively to each of the widget’s managed chil-
		 dren 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 True.  (If a widget is managed but
		 mapped_when_managed is False, the widget is allocated visual
		 space but is not displayed.  Some people seem to like this
		 to indicate certain states.)

       If the widget is a top-level shell widget (that is, it has no parent),
       and mapped_when_managed is True, XtRealizeWidget maps the widget win-
       dow.

       The XtIsRealized function returns True if the widget has been real-
       ized, 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 XtUnrealizeWidget 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 XtRealizeWidget again.  If
       the widget was managed, it will be unmanaged automatically before its
       window is freed.

SEE ALSO
       XtManageChildren(3Xt)
       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface



							 XtRealizeWidget(3Xt)