http://bugs.winehq.org/show_bug.cgi?id=15312
--- Comment #6 from Mikolaj Zalewski mikolaj.zalewski@gmail.com 2009-10-21 23:26:12 --- Hi, I'm currently unable to test this, but I should be able to give it a try in a week. The patch looks correct, but I'm not a gdi expert (it might not have the best performance because of creating a DC for every bitblt, but it's still better than broken functionality)