| Re: Draw Widget Object Graphics Scrolling, Confused [message #72040] |
Tue, 03 August 2010 13:09  |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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j.coenia@gmail.com writes:
> If RETAIN is 0 or 1, the view only redraws itself *after* I release
> the scrollbars, so I can't really interactively scroll through my
> object graphics. While I'm dragging, until I release, the viewport
> goes almost all white, so I can't see where I am scrolling.
Is this because you are not getting events in your event
handler (seems doubtful) or because you are not updating the
scene in your event handler when you get a motion event?
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thue. ("Perhaps thos speakest truth.")
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| Re: Draw Widget Object Graphics Scrolling, Confused [message #72106 is a reply to message #72040] |
Mon, 09 August 2010 11:04  |
j.coenia@gmail.com
Messages: 36
Registered: December 2008
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Member |
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> Is this because you are not getting events in your event
> handler (seems doubtful) or because you are not updating the
> scene in your event handler when you get a motion event?
There are no events generated at all while scrolling (?), only when
the scrollbars are released (IDL 7.1, Windows 7 32). If there is
some switch I'm missing to turn on scrolling events so I could redraw,
that would solve my problem.
Thanks!
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