hpux man page for xtwindowofobject

XtWindowOfObject()														XtWindowOfObject()

Name
  XtWindowOfObject - return the window for the nearest ancestor of object that is of class Core.

Synopsis
  Window XtWindowOfObject(object)
	   Widget object;

Inputs
  object    Specifies the object; may be of class Object or any subclass thereof.

Returns
  The window of object or of its nearest widget ancestor.

Availability
  Release 4 and later.

Description
  XtWindowOfObject()  is  identical  in function to XtWindow() if object is a widget; otherwise XtWindowOfObject() returns the window for the
  nearest ancestor of object that is of class Core or any subclass thereof.

Usage
  If you are working with windowed objects, use XtWindow() rather than XtWindowOfObject().  XtWindow() may be  implemented  as	an  efficient
  macro for widget code that includes the file <X11/IntrinsicP.h>.

See Also
  XtDisplayOfObject(1), XtScreenOfObject(1), XtWindow(1).

Xt - Object Information 													XtWindowOfObject()