Chiakie wrote:
> Dear all,
> 
> How can I update a window surface without flipping?

If you create the window yourself you always need to call
Flip to update it.

> I try to set surface capability = DSCAPS_PRIMARY, but it does not work.

You can use IDirectFB::CreateSurface() with DSCAPS_PRIMARY and
there will be a thread which regularly Flip()s for you. This thread
should be more intelligent though, and it should be a runtime option.

-- 
Best regards,
  Denis Oliver Kropp

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