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XtSetMappedWhenManaged() XtSetMappedWhenManaged()
Name
XtSetMappedWhenManaged - set the value of a widget's XtNmappedWhenManaged resource and map or unmap the window.
Synopsis
void XtSetMappedWhenManaged(w, map_when_managed)
Widget w;
Boolean map_when_managed;
Inputs
w Specifies the widget. Must be of class Core or any subclass thereof.
map_when_managed
Specifies the new value of the map_when_managed field.
Description
If w is realized and managed and if map_when_managed is set to True, XtSetMappedWhenManaged() maps the widget's window. If the widget is
realized and managed and if the new value of map_when_managed is set to False, XtSetMappedWhenManaged() unmaps the widget's window. In
both cases, XtSetMappedWhenManaged() sets the value of the widget's XtNmappedWhenManaged resource as specified by the map_when_managed
argument.
XtSetMappedWhenManaged() is a convenience function that is equivalent to (but slightly faster than) calling XtSetValues() to set the new
value for the XtNmappedWhenManaged resource, and then mapping or unmapping the widget as appropriate.
Usage
A widget is normally mapped when it is managed, which is usually the desired behavior. This behavior can be overridden by setting the XtN-
mappedWhenManaged resource for the widget to False, and then calling XtSetMappedWhenManaged() to map and unmap the widget or by calling
XtMapWidget() and XtUnmapWidget() explicitly.
A widget that is managed but unmapped will have screen space allocated for it, but will not appear in that space. A widget that is unman-
aged will not have screen space allocated for it, and if mapped will likely appear in an undesirable place.
See Also
XtManageChild(1), XtMapWidget(1), XtUnmapWidget(1).
Xt - Resource Management XtSetMappedWhenManaged()