At Tue, 20 Jul 2010 22:20:04 -0400, Mathew Kurian wrote: > Thanks for the update Matt....lemme know once you find a fix.... how long > will that take? just curious.
I've pushed a repair, so the next build (i.e., a date later than July 20 03:50 EDT) that is available here should work correctly: http://pre.racket-lang.org/installers/ The problem was specific to the Windows version of Racket. Drawing a bitmap with an alpha channel involves generating a variant of the bitmap (with RGB values that are pre-multiplied by the alpha channel). Generating the variant can allocate, and therefore might trigger the little recycle icon in DrRacket during a garbage collection. Unfortunately, drawing the recycle icon would steal a resource that was being used to generate the variant bitmap. As a result, the generated bitmap's RGB (not the alpha part) was all black. _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
