CentOS 7.0 - man page for xmgetvisibility (centos section 3)
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XmGetVisibility(library call) XmGetVisibility(library call)
XmGetVisibility -- A function that determines if a widget is visible
XmGetVisibility returns the visibility state of the specified widget. It checks to see if
some part of the widget's rectangular area is unobscured by the widget's ancestors, or
some part of the widget's rectangular area is inside the work window (but possibly outside
the clip window) of a ScrolledWindow whose XmNscrollingPolicy is XmAUTOMATIC and whose
XmNtraverseObscuredCallback is not NULL.
XmGetVisibility does not check to see if widget is obscured by its siblings or by siblings
of its ancestors. Consequently, XmGetVisibility returns XmVISIBILITY_UNOBSCURED for wid-
gets which are completely or partially covered by one or more siblings of widget by one or
more siblings of ancestors of widget.
When a widget which is unrealized is being queried, it is indicated that the widget is
fully obscured. If an application unmaps a widget that has its XmNmappedWhenManaged
resource set to True, the return value is undefined. When a widget which is unmanaged is
being queried, it is indicated that the widget is fully obscured.
widget Specifies the ID of the widget
Returns one of the following values:
Indicates that the widget is mapped, not obscured, and is completely visible on
Indicates that the widget is mapped, and is not completely visible on the screen
Indicates that the widget is not at all visible on the screen.
XmIsTraversable(3), XmManager(3), and XmProcessTraversal(3).
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