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Re: Backing store issue [message #48137 is a reply to message #47993]

Mon, 27 March 2006 12:40

Jonathan Joseph
Messages: 69
Registered: September 1998

Member

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).

-J

David Fanning wrote:

>
> When scrolling, usually only a *few* rows or columns need
> to be drawn. Most of what you need is already on the display,
> it just has to be moved with DEVICE COPY. Surely, *this*
> is fast enough! :-)
>
> Cheers,
>
> David

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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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