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Q110636: BUG: Palettes Realized in a Memory DC May Corrupt Screen

Article: Q110636
Product(s): Microsoft Windows Software Development Kit
Version(s): WINDOWS:3.1
Operating System(s): 
Keyword(s): 
Last Modified: 06-NOV-1999

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The information in this article applies to:

- Microsoft Windows Software Development Kit (SDK) 3.1 
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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 query words: buglist3.10 3.10 SelectPalette RealizePalette

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Keywords          :  
Technology        : kbAudDeveloper kbWin3xSearch kbSDKSearch kbWinSDKSearch kbWinSDK310
Version           : WINDOWS:3.1

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