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Draw Widget Object Graphics Scrolling, Confused [message #72041]

Tue, 03 August 2010 13:00

j.coenia@gmail.com
Messages: 36
Registered: December 2008

Member

I want to scroll through a zoomed object graphics scene bigger than
the viewport by dragging draw widget scrollbars. This works if RETAIN
= 2, but performance is too slow, which is why it is not recommended
in the documentation.

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.

I'm re-drawing with every expose or viewport event, as suggested in
the help, but these events are not generated *while* I'm dragging the
scrollbars.

How do I use the draw widget scrollbars to scroll through an object
graphics scene if RETAIN is 0, the recommended setting for object
graphics windows?

Thanks.

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[Message index]

		Draw Widget Object Graphics Scrolling, Confused By: j.coenia@gmail.com on Tue, 03 August 2010 13:00
		Re: Draw Widget Object Graphics Scrolling, Confused By: j.coenia@gmail.com on Mon, 09 August 2010 13:39
		Re: Draw Widget Object Graphics Scrolling, Confused By: Michael Galloy on Mon, 09 August 2010 13:20

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