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Positioning a menu?

CLIM 2.0-Beta/Allegro/On a Sparc

I need to position a pop-up window at a point (PX,PY) over a pane.  (I get
the window using WITH-MENU.)

The most useful function I can come up with is POSITION-SHEET-CAREFULLY.
However, this positions the menu-window relative to the upper-left corner
of the screen.  (This behavious is not affected by any of the obvious
things --e.g. by setting the ASSOCIATED-WINDOW when calling WITH-MENU).

(MOVE-SHEET and MOVE-AND-RESIZE sheet appear to only frob the
transformation of the menu window and not actually move the window itself.)

Alternatively, I could convert (PX,PY) into screen-coordinates.  But I
can't figure out a reasonable way to this.  (For example, I seem to get
identity transformations all the way up the sheet-parent tree.)

Suggestions?  (BTW I got this to work in 1.1.)


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