XmGetVisibility (3) - Linux Manuals

XmGetVisibility: A function that determines if a widget is

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).