PRB: Global TSR Pop-ups Incompatible with Windows

Last reviewed: July 23, 1997
Article ID: Q76452

3.00 3.10 WINDOWS kbprg kbprb

The information in this article applies to:

Microsoft Windows Software Development Kit (SDK) for Windows versions 3.0 and 3.1

SYMPTOMS

If a TSR (terminate-and-stay-resident) program loaded before Windows (a global TSR) is used to create a pop-up window over the Windows display, the display will be disrupted.

CAUSE

When a global TSR pop-up window attempts to overlay the Windows display, the pop-up places the system virtual machine into text mode, which disrupts the Windows Virtual Display Device (VDD). When the pop-up is complete, the display is not restored properly.

RESOLUTION

Global TSR pop-ups are incompatible with Windows. The same functionality should be written into a Windows-based application.

Additional reference words: 3.00 3.10
KBCategory: kbprg kbprb
KBSubcategory: KrIsrTsr
Keywords : kb16bitonly

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Last reviewed: July 23, 1997
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