This manual page is for Mac OS X version 10.6.3

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XtRealizeWidget(3)                              XT FUNCTIONS                              XtRealizeWidget(3)



NAME
       XtRealizeWidget, XtIsRealized, XtUnrealizeWidget - realize and unrealize 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 fol-lowing: following:
       lowing:

       •    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 proce-dures. procedures.
                 dures.  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.

       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



X Version 11                                     libXt 1.0.5                              XtRealizeWidget(3)