[wxPython-users] Reducing the size of a BufferedDC

[Alexander 'boesi' Bösecke]

Hi

Am 14.12.2006 20:29:41 schrieb Christopher Barker:

> I see the same problem with 2.8 on OS-X, but not with 2.6. However, 
> there is a bit of odd code. I've re-written it a bit, and it seems to 
> work now. 

So GetSize returns now the correct size (of the target DC)?

> You don't need to explicitly call destroy on the dc. In 
> general, you don't call Destroy() in wxPython -- python's garbage 
> collection handles that for you.

Yes I know, but obviously the buffered DC doesn't get destroyed - so it
was a try to destroy it manually.

> However, the other option is to create the off-screen bitmap yourself, 
> then pass it in the constructor. See the commented code in the example.
> 
> In real use, it's likely you want to keep that bitmap around anyway, so 
> that your OnPaint handler can just blit it to the screen. See the 
> DoubleBuffer demo in the Wiki.

Hmm but with BufferedDC this isn't needed, is it? I'm not really interested
in the size of the DC - but for drawing I need the correct size. Of
course I can save the size of the DC before doubble buffering, but this
confuses me somewhat.
 

cu boesi
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