Microsoft KB Archive/137370

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PRB: Dithered Brushes Are Not Supported in DIB Sections

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Q137370

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The information in this article applies to:


 * Microsoft Win32 Software Development Kit (SDK), versions 3.5, 3.51, 4.0
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Professional

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SYMPTOMS
Dithered brushes do not work in device contexts that have DIB sections selected into them. If you create an HBITMAP using CreateDIBSection, select it into a memory DC, and then attempt to use a dithered brush returned by CreateSolidBrush to draw into the DIB section, the brush will not be drawn with a dithered color.

CAUSE
To handle dithered brushes, the GDI relies on certain colors being available in particular positions in the palette. DIB sections do not have to have these colors in their color table, so the GDI cannot rely on the necessary colors being available for dithering.

STATUS
This behavior is by design.

Additional query words: 4.00 3.50 bitmap solid fillrect hbrush

Keywords : kbOSWin2000

Issue type : kbprb

Technology : kbwin2000AdvServ kbwin2000AdvServSearch kbwin2000Serv kbwin2000ServSearch kbwin2000Search kbwin2000ProSearch kbwin2000Pro kbWin32SDKSearch kbAudDeveloper kbSDKSearch kbWinAdvServSearch kbWin32sSearch kbWin32SDK400 kbWin32SDK350 kbWin32SDK351