[Mono-bugs] [Bug 493047] Drawing a locked Bitmap (LockBits) results in a black image

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Sat Jan 23 06:47:17 EST 2010



--- Comment #3 from Thomas Goldstein <stifu at free.fr> 2010-01-23 11:47:13 UTC ---
"On a side note, I have no idea why 32bppArgb and 24bppRgb behave differently,
as these tests show. A certain logic, limitation, or .NET bug?"

Oh wait, it makes sense after all. That's because the FastBitmap class
(included with the tests) uses PixelFormat.Format24bppRgb internally. If
changed to 32bppArgb, the 32bpp test gives the same result as the 24bpp one.

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