XtRealizeWidget man page on QNX

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XtRealizeWidget(3)		 XT FUNCTIONS		    XtRealizeWidget(3)

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

       void XtRealizeWidget(Widget w);

       Boolean XtIsRealized(Widget w);

       void XtUnrealizeWidget(Widget w);

       w	 Specifies the widget.

       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 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 XSetWindowAttributes structure filled in with infor‐
	    mation 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

	    -	 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 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‐

       The XtIsRealized function returns True 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 XtUnrealizeWidget function destroys the windows of an existing wid‐
       get 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.

       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface

X Version 11			  libXt 1.0.8		    XtRealizeWidget(3)
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