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Re: Backing store issue [message #48135 is a reply to message #47993]

Mon, 27 March 2006 12:58

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Jonathan Joseph writes:

> I just realized that,
>
> Even if I code it the way you say, I will still see clunkiness if I grab
> the slider and slide it fast - or if I scroll by holding my mouse button
> down in the scroll bar but not on the thumb. Then it will go a screen
> at at time, and there won't be anything to DEVICE COPY.
>
> Using retain=2 (or 1) gives me fast scrolling under all circumstances
> (when it works as advertised).

I'm not saying these are perfect solutions. I'm
just saying you are creating one BIG window! It doesn't
surprise me (given my experience with pixmaps and
backing store) you are having problems. I would be
more surprised if you weren't having problems. :-)

Cheers,

David

P.S. You could always write machine-specific code
and let the guys on the SUN get by with sluggish
graphic performance. They might even be used to it. :-)

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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[Message index]

		Backing store issue By: Jonathan Joseph on Mon, 27 March 2006 10:56
		Re: Backing store issue By: Karl Schultz on Tue, 28 March 2006 11:31
		Re: Backing store issue By: Paul Van Delst[1] on Tue, 28 March 2006 10:45
		Re: Backing store issue By: K. Bowman on Tue, 28 March 2006 10:24
		Re: Backing store issue By: Karl Schultz on Tue, 28 March 2006 10:03
		Re: Backing store issue By: liamgumley on Tue, 28 March 2006 08:59
		Re: Backing store issue By: Jonathan Joseph on Mon, 27 March 2006 14:44
		Re: Backing store issue By: Karl Schultz on Mon, 27 March 2006 13:48
		Re: Backing store issue By: Jonathan Joseph on Mon, 27 March 2006 13:20
		Re: Backing store issue By: David Fanning on Mon, 27 March 2006 12:58
		Re: Backing store issue By: Jonathan Joseph on Mon, 27 March 2006 12:40
		Re: Backing store issue By: David Fanning on Mon, 27 March 2006 12:36
		Re: Backing store issue By: Jonathan Joseph on Mon, 27 March 2006 12:24
		Re: Backing store issue By: David Fanning on Mon, 27 March 2006 11:41
		Re: Backing store issue By: Jonathan Joseph on Mon, 27 March 2006 11:37
		Re: Backing store issue By: David Fanning on Mon, 27 March 2006 11:23

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