XtRealizeWidget(3Xt)        X Version 11(Release 3)        XtRealizeWidget(3Xt)


NAME
      XtRealizeWidget, XtIsRealized, XtUnrealizeWidget - realize and unrealize
      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, XtRealizeWidget simply returns.
      Otherwise, it performs the following:

      ⊕    Binds all action names in the widget's translation table to
           procedures (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 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 window.




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XtRealizeWidget(3Xt)        X Version 11(Release 3)        XtRealizeWidget(3Xt)


      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 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






































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