hpux man page for xtparent

XtParent()																XtParent()

Name
  XtParent - return the parent of the specified widget.

Synopsis
  Widget XtParent(w)
	 Widget w;

Inputs
  w	    Specifies the widget whose parent is to be returned.  May be of class Object or any subclass thereof.

Returns
  The parent of w.

Description
  XtParent() returns the parent widget of the specified object.

Usage
  XtParent()  is implemented as a function when called from application code, but is replaced by a more efficient macro when called from wid-
  get code including the file <X11/IntrinsicP.h>.

  If XtParent() is called on a toplevel shell widget which has no parent (such as those created by XtAppInitialize()  or  XtAppCreateShell(),
  for example) it returns NULL.

Xt - Object Information 														XtParent()