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Micro Soft Windows Conflict With Serial Mouse |
The information in this document applies to:
WordPerfect® 5.1 for DOS
Problem
Solutions: Problem: WP51 and MS Windows conflict when using a serial mouse. After selecting a serial mouse in WP51 the mouse will not function in Windows. The same is true in reverse, if the mouse is used in Windows the mouse will not work in WP51. The computer must be cold booted in order to solve the problem. The problem does not occur if MOUSE.COM is used. Answer from Development: I found the problem with a SERIAL mouse and switching (when minimizing). If you have a serial mouse, you should check the "Directly Modifies... COMx" option in the PIF file editor. According to the Windows manual (page 184,5), "COM1. Turn on this check box if your application uses serial communications port 1 (COM1). If you select this box, Windows cannot run any other application that uses COM1 until you quit the first application. This prevents two applications from trying to use the same communications port at the same time." (The COM1 box does not exist if in 386 Enhanced mode.) "Selecting this option also prevents the application from being swapped to the hard disk. Some programs must remain in memory at all times. Generally, you need to select this option only if you are running a communications application." Since you usually try to use the same mouse for both Windows and WP, it won't swap out if you have this checked. If you don't check this box, Windows takes over and doesn't know enough to give it back. I must use a different mouse in Windows (different port or type) than what I use in WP to allow switching. One solution (so you don't have to check the COMx box and still be able to minimize) is to have a macro in WP that re-selects the mouse. When you re-enter WP, use a macro (ALT-M) to re-select the mouse, and it will work again. |
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