Arguments: header-control position-in-header-control
Returns the header-id of the header at position-in-header-control
relative to the upper left corner of header-control, or nil
if that position is not over a header.
See the description of the header-control
class/control.
Common Graphics and IDE documentation is described in About Common Graphics and IDE documentation in cgide.htm.
The documentation is described in introduction.htm and the index is in index.htm.
Copyright (c) 1998-2000, Franz Inc. Berkeley, CA., USA. All rights reserved.
Created 2000.10.5.