Re: [PATCH 0/1] MR6547: uxtheme: Better detect the presence of default transparent colour in prepare_alpha().

[Zhiyi Zhang (＠zhiyi)]

Zhiyi Zhang (@zhiyi) commented about dlls/uxtheme/msstyles.c:
> if (!bmp || GetObjectW( bmp, sizeof(dib), &dib ) != sizeof(dib))
>          return FALSE;
>
> if (dib.dsBmih.biCompression != BI_RGB)

The regression probably applies to other bitmap compression formats as well. For example, BI_BITFIELDS. But then the other formats seem unused by theme files so they might be safe to ignore.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/6547#note_83137