[Bug 17886] Toolbar flicker (TB_HIDEBUTTON always redraws)

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=17886





--- Comment #3 from Nikolay Sivov <bunglehead at gmail.com>  2009-04-04 03:45:48 ---
> Created an attachment (id=20190)
 --> (http://bugs.winehq.org/attachment.cgi?id=20190) [details]
>
> I guess that Windows itself optimises this to avoid repainting when a
> visibility state of the button is already set to that requested with
> TB_HIDEBUTTON. Doing the same under WINE (patch attached) fixes the flicker.
> 

You're right I think. Checking with ControlSpy in Windows shows that subsequent
TB_HIDEBUTTON doesn't produce any drawing messages.

(In reply to comment #2)
> Created an attachment (id=20193)
 --> (http://bugs.winehq.org/attachment.cgi?id=20193) [details]
> Test program for flickering toolbar
> 
> Added source for basic win32 app that creates a toolbar and issues a
> TB_HIDEBUTTON message on WM_MOUSEMOVE. On my system, this makes the toolbar
> flicker like crazy (may not be so noticeable on newer gfx cards).
> 

We need to add messaging sequence testing in toolbar test suite for that - it's
not present yet. Probably I could do it this weekend.


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