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From: chuck@trantor.harris-atd.com (Chuck Musciano)
Newsgroups: comp.sys.sun
Subject: Re: Canvas popup menus in suntools
Keywords: Windows
Message-ID: <997@brazos.Rice.edu>
Date: 22 Aug 89 11:49:15 GMT
Sender: root@rice.edu
Organization: Sun-Spots
Lines: 21
Approved: Sun-Spots@rice.edu
X-Sun-Spots-Digest: Volume 8, Issue 101, message 1 of 16

> Now I have scrollbars with the canvas. If
> the canvas is unscrolled then menu pops up right where the mouse button is
> pressed. But if the canvas has been scolled away from zero position then
> the menu pops at weird places, like one corner of the entire screen.

When you call menu_show(), it needs the event which initiated the request
and the window it occured in.  I believe the menu package uses this event
to determine where the menu will be displayed, and which button up event
signifies a selection in the menu.  If you have a scrolling canvas, the
event coordinate space has been translated by your scrolling, and this
probably confuses the menu package.  I believe there is a routine which
translates from canvas to world coordinates, which you might want to use
to adjust the event location before calling menu_show().

Chuck Musciano				ARPA  : chuck@trantor.harris-atd.com
Harris Corporation 			Usenet: ...!uunet!x102a!trantor!chuck
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