On 27.10.2007 at 07:53 David Duncan wrote:
>On Oct 27, 2007, at 4:35 AM, Andreas Falkenhahn wrote:
>
>> However, the region I set during kEventWindowGetRegion is not
>> respected
>> by CopyBits().
>
>CopyBits() (and all of Quickdraw) doesn't work with alpha blending
>(all QD operations set the alpha channel to fully opaque). You will
>have to switch to Quartz if you want alpha transparency.
I don't want alpha transparency. I just need a 1-bit transparency level,
i.e. only two states: visible pixel/invisible pixel. I don't need alpha.
Andreas
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