Most of the time, it really helps if you copy and paste the exact error message you're getting, together with the code (a really small, self-contained example) that causes this.

My guess is that you're just missing the following line at the top of your program:

use Win32::API;

[download]

Also see the use keyword.

In reply to Re^3: Perl calling my.DLL for serial port work. by Corion
in thread Perl calling my.DLL for serial port work. by kansaschuck

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