Microsoft KB Archive/41464

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INFO: Background Colors Affect BitBlt from Mono to Color

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Q41464

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The information in this article applies to:


 * Microsoft Windows Software Development Kit (SDK) versions 3.1, 3.0
 * Microsoft Win32 Application Programming Interface (API), used with:
 * Microsoft Windows NT Server versions 3.5, 3.51
 * Microsoft Windows NT Workstation versions 3.5, 3.51
 * Microsoft Windows 95

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SUMMARY
When using BitBlt to convert a monochrome bitmap to a color bitmap, GDI transforms all white bits (1) to the background color of the destination device context (DC). GDI transforms all black bits (0) to the text (or foreground) color of the destination DC.

When using BitBlt to convert a color bitmap to a monochrome bitmap, GDI sets to white (1) all pixels that match the background color of the source DC. All other bits are set to black (0).

These features are mentioned in the BitBlt documentation. manual.

Additional query words: 3.00 3.10 3.50 4.00 win16sdk

Keywords : kbOSWinNT350 kbOSWinNT351 kbSDKWin32 kbOSWin310 kbOSWin95 kbDSupport kbOSWin300

Issue type : kbinfo

Technology : kbAudDeveloper kbSDKSearch kbWin32sSearch kbWin32API kbWinSDKSearch