Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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Corrections
 
To broadcast a message to all windows in the system, the hwnd parameter must
be set to HWND_DESKTOP, not to NULL.
 
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