[Bug 33084] installer of QQ2013 Beta2: has black spot in the dialog

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=33084

--- Comment #3 from Vincent Povirk <madewokherd at gmail.com> 2013-03-02 10:43:40 CST ---
Created attachment 43773
  --> http://bugs.winehq.org/attachment.cgi?id=43773
possible fix

The attached patch seems to fix it, but I don't really understand why. It seems
to me that a fully transparent pixel is a fully transparent pixel, and it
shouldn't matter what's in the RGB channels. Nor does the application seem to
do anything weird to draw it.

And I can't think of an easy way to generate a test image for this.

Dmitry, you sent a gdiplus change earlier that preserved the RGB channels when
converting from ARGB -> RGB. Any thoughts on this?

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