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[haiku-appserver] DisableUpdates() / EnableUpdates()
- From: Adi Oanca <adioanca@xxxxxxxxx>
- To: haiku-appserver@xxxxxxxxxxxxx
- Date: Sat, 29 Oct 2005 14:56:35 +0300
Hi,
I have a problem with these methods:
DisableUpdates() , EnableUpdates()
These functions disable automatic updating within the window, and
re-enable it again. Any drawing that's done while updates are disabled
is suppressed until updates are re-enabled. If you're doing a lot of
drawing within the window, and you want the results of the drawing to
appear all at once, you should disable updates, draw, and then re-enable
updates.
How do you think we should implement this? Do you how this is
implemented in R5? Any other information related to these 2 methods?
I think that to do what the BeBook says ("the drawing to appear all at
once") we should draw in a bitmap and when EnableUpdates() is called,
copy/blit that bitmap in window's visible area.
Thoughts? Opinions?
Thanks,
Adi.
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