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Re: Calling a C API in a dll from Perl on Windows

by fenonn (Chaplain)
on Jun 24, 2002 at 15:55 UTC ( #176838=note: print w/replies, xml ) Need Help??


in reply to Calling a C API in a dll from Perl on Windows

I think the best bet is to go with using Win32::API. I have used this module to easily allow my perl program to control Winamp. Here is a short example that uses a function in the user32.dll to send a Win32 message to Winamp to obtain its playback status.
#!/usr/bin/perl -w use strict; use Win32::GUI; use Win32::API; my $winampHandle = Win32::GUI::FindWindow("Winamp v1.x", ""); print "Handle: $winampHandle\n"; my $sendMessage = new Win32::API("user32", "SendMessageA", ['N','N','N +','N'], 'N'); my $playStatus = $sendMessage->Call($winampHandle,1024,2,104); print $playStatus == 0 ? 'stopped' : $playStatus == 1 ? 'playing' : 'p +aused';

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[Eily]: Discipulus try looking at $@
[Eily]: or count the parentheses :)
[Discipulus]: stupid me! I had to stay at home and do not code with the flu..
[holli]: bacause it's a syntax error
[Discipulus]: yes sorry forget and forgive me
[Eily]: for what it's worth I didn't go for the brightest solution either
[Eily]: I tried print eval '2+1/3*(2+2/5))' or print $@
[Eily]: and therefore concluded that the eval did succeed because there was no printed error :P
[Eily]: stupid operator precedence :D

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