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 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 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 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

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)