Problems getting/setting TopLevelWindow position

I am trying to save my top level window position on exit and then
restore it when the application restarts. The “config” sample program
does this, but it does not run right on IRIX. This is what is
happening:

The sample program starts up and trys to set its position with Move()
(which eventually calls gtk_window_move()). Rather than setting the
top/left border of the frame to that position, it sets the client area
to that position, thus we are offset to the top and left from the
position we really want to be at.

The function gtk_frame_configure_callback() is invoked which then trys
to set the wxTopLevelWindow position variables (m_x and m_y) via a
call to gdk_window_get_root_origin(). This function returns the true
top-left position of the frame.

When we exit the program we save this new position in a wxConfig
object.

We come up again and we try to set our position with Move. But Move
will set the client area position, which offsets us once again. The
gtk_frame_configure_callback function is invoked which once again sets
the wxTopLevelWindow position variables (m_x and m_y) to what the true
position of the frame is.

What happens is that we continually creep to the top and left over
each run of the executable.

I could put a “kludge” in my code to compensate for these offsets, but
things are not so predictable. Unfortunately, although the
gdk_window_get_root_origin() function normally returns the frame
border's position, it sometimes returns the client area’s position…
and sometimes it returns (0,0).

So…. The main problems are:
gtk_window_move() sets the client area position, not the frame border
position.
gdk_window_get_root_origin() is unpredictable

Any ideas what is going on?

I am using wx-GTK-2.8.8 (with GTK+ 2.4) on IRIX 6.5
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