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From: kwh@sei.cmu.edu (Kurt Hoyt)
Newsgroups: comp.windows.x
Subject: Problem with motion event handling?
Message-ID: <3312@aw.sei.cmu.edu>
Date: Wed, 18-Nov-87 16:03:44 EST
Article-I.D.: aw.3312
Posted: Wed Nov 18 16:03:44 1987
Date-Received: Sat, 21-Nov-87 11:07:39 EST
Sender: netnews@sei.cmu.edu
Lines: 25
Keywords: X11 motion events


On a uVax running Ultrix 1.2 and (Xqvss X11 and fixes 1-60 (except 45)):

I want to write code to grab and move (or resize) a graphic object (i.e. a
line, rectangle, text, etc.). I have used regions to help pick the object in
conjunction with button press/release events. I now want to get motion
events while a button is down so I can move the object with some sort of
feedback until the button is released. Selecting ButtonMotionMask generates
MotionNotifys whether or not a button is pressed. Selecting
PointerMotionHintMask ONLY generates nothing. Selecting either
ButtonMotionMask or PointerMotionMask along with PointMotionHintMask will
generate one MotionNotify if the pointer moves and no buttons are pressed
and lots of MotionNotifys when any button is pressed (followed by one
MotionNotify after the button is released). XGetMotionEvents consistently
has nothing to report (called initialliy with start = 0, stop =
CurrentTime). None of this matches the documentation or what I expected.
Other selected events:  ExposureMask, ButtonPressMask, ButtonReleaseMask,
KeyPressMask. Am I doing something wrong or is it time to write to xbugs?

Thanks.
--
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