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Display Unreadable After Pressing Alt-Tab To |
The information in this document applies to:
WordPerfect® 5.1 for DOS
Problem
Symptoms: A customer running WordPerfect 5.1 for DOS under Windows, pressed Alt-Tab to switch out of WP to Program Manager. Then, the customer pressed Alt-Tab to get back to WP and the screen was full of garbage. Solutions: The Alt-Tab function is a Windows feature. WP is being suspended and isn't even aware that control has been returned to Windows. Windows isn't making the transition from 132 column text back to graphics mode very well. Customers with this problem will need to talk to Microsoft or the manufacturer of the display driver that the customer is using in Windows if it is not a driver supplied by Microsoft. The same thing can happen under Windows 3.1. The same thing can happen when using Alt-Tab or double- clicking on the icon to go back to the DOS application. This does not only happen in WP, but will also happen at the DOS prompt if you use a utility that comes with the graphics card to choose a 132 column text mode at DOS without even entering WordPerfect, and then go back to Windows and then back to the DOS prompt, the screen will be completely black. This is a problem with the Display driver being used in Windows not handling the switching from graphics mode to extended text mode (and vice versa) correctly. |
Answer:
Details:
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