[ros-bugs] [Bug 2288] Artefacts in Firefox and Thunderbird

[ReactOS.Bugzilla at reactos.org]

http://www.reactos.org/bugzilla/show_bug.cgi?id=2288





--- Comment #10 from grschneider <grschneider at gmail.com>  2009-12-23 20:51:02 CET ---
Found the cause (?) for this by chance looking at gdi32 winetest bitmap
failures. They hint at the fact that color bitmaps should match the DC's bit
depth to be selectable (bitmap.c:1945).
Currently we allow every bitmap to be selected, implementing a simple guard
showed that all broken firefox icons disappear if we comply with tested
behaviour (except for the one in attachment 3657).

Bit-/stretchblt seem to be abusing this as well.


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