xtmapwidget(3) [linux man page]

XtMapWidget(3)							   XT FUNCTIONS 						    XtMapWidget(3)

NAME

       XtMapWidget, XtSetMappedWhenManaged, XtUnmapWidget - map and unmap widgets

SYNTAX

       int XtMapWidget(Widget w);

       void XtSetMappedWhenManaged(Widget w, Boolean map_when_managed);

       int XtUnmapWidget(Widget w);

ARGUMENTS

       map_when_managed
		 Specifies a Boolean value that indicates the new value of the map_when_managed field.

       w	 Specifies the widget.

DESCRIPTION

       If the widget is realized and managed and if the new value of map_when_managed is True, XtSetMappedWhenManaged maps the window.	If the
       widget is realized and managed and if the new value of map_when_managed is False, it unmaps the window.	XtSetMappedWhenManaged is a conve-
       nience function that is equivalent to (but slightly faster than) calling XtSetValues and setting the new value for the mappedWhenManaged
       resource.  As an alternative to using XtSetMappedWhenManaged to control mapping, a client may set mapped_when_managed to False and use
       XtMapWidget and XtUnmapWidget explicitly.

SEE ALSO

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

X Version 11							    libXt 1.1.3 						    XtMapWidget(3)

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 following:

       o    Binds all action names in the widget's translation table to procedures (see Section 10.1.2).

       o    Makes a post-order traversal of the widget tree rooted at the specified widget and calls the change_managed procedure of each compos-
	    ite widget that has one or more managed children.

       o    Constructs an XSetWindowAttributes structure filled in with information derived from the Core widget fields and calls the realize pro-
	    cedure for the widget, which adds any widget-specific attributes and creates the X window.

       o    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 instanti-
		 ate 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(3)
       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface

X Version 11							    libXt 1.1.3 						XtRealizeWidget(3)