Don't know anything about C, and I don't know why you'd ask here, but the following can help (found thanks to how to rtfm):
Win32::CtrlGUI
Win32::GuiTest

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In reply to Re: How to send a message to perlTk program from Win32 application? by PodMaster
in thread How to send a message to perlTk program from Win32 application? by Courage

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