XtMapWidget, XtSetMappedWhenManaged, XtUnmapWidget - map and unmap widgets

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

       w         Specifies the widget.

       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 convenience 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.

       XtMapWidget, XtSetMappedWhenManaged, XtUnmapWidget - map and unmap widgets

XtManageChildren(3)
       XToolkitIntrinsics-CLanguageInterfaceXlib-CLanguageXInterface

X Version 11                                       libXt 1.2.1                                    XtMapWidget(3)

       #include <X11/Intrinsic.h>

       void XtMapWidget(Widget w);

       void XtSetMappedWhenManaged(Widget w, Boolean map_when_managed);

       void XtUnmapWidget(Widget w);