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CentOS 7.0 - man page for xmgetvisibility (centos section 3)

XmGetVisibility(library call)								XmGetVisibility(library call)

NAME
XmGetVisibility -- A function that determines if a widget is visible
SYNOPSIS
#include <Xm/Xm.h> XmVisibility XmGetVisibility( Widget widget);
DESCRIPTION
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 XmNscrolling- Policy 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 widgets 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 unde- fined. 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
RETURN
Returns one of the following values: XmVISIBILITY_UNOBSCURED Indicates that the widget is mapped, not obscured, and is completely visible on the screen. XmVISIBILITY_PARTIALLY_OBSCURED Indicates that the widget is mapped, and is not completely visible on the screen (partially obscured). XmVISIBILITY_FULLY_OBSCURED Indicates that the widget is not at all visible on the screen.
RELATED
XmIsTraversable(3), XmManager(3), and XmProcessTraversal(3). XmGetVisibility(library call)


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