BUG: Palettes Realized in a Memory DC May Corrupt Screen

 Last reviewed: January 5, 1995
Article ID: Q110636
The information in this article applies to:
  • Microsoft Windows Software Development Kit (SDK) for Windows version 3.1

SYMPTOMS

On a 256-color display, when a palette is realized into a memory device context (DC), its colors are entered into the system palette, which may corrupt the current screen.

STATUS

Microsoft has confirmed this to be a bug in Windows version 3.1. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

The premise behind the Windows Palette Manager code is that the current top- level window has priority over all other running applications in letting the system palette. When the active window sets a foreground palette, other windows in the system that use the palette may have their colors changed if there is not enough room for them to realize a background palette. This behavior is normal and is expected. What is not expected is to have colors change when a palette is selected and realized into a memory DC returned by CreateCompatibleDC().

Additional reference words: buglist3.10 3.10 SelectPalette RealizePalette
KBCategory: kbprg kbbuglist
KBSubcategory: GdiPal

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Last reviewed: January 5, 1995
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