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How to send message to another program(Written by C)?

Posted on 2002-06-27
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Last Modified: 2010-04-04
Hi all,
How to send message to another program(Written by C)?
I just need to send some simple message/data to another program. My program written by Delphi, the target program written by C.

Please tell me the detail.

Thanks, bin
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Question by:xbbin
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h_mohsenian earned 200 total points
ID: 7114214
hi,

you can use PostMessage function. in the VC++ program you can choose a CWnd ( for example a CDialog ) and get its HWnd . after that use this code :

postMessage(VCProgramHandle : HWND , WM_TestMessage : cardinal , wParam , lParam );

also you can use FindWindow API function for finding your VC++ program Window Handle ( the HWND ) in your Delphi program directly.

for example :

Hwnd := FindWindow('CWnd','MyMainVCPPDialogName');

postmessage(Hwnd,...);

I hope it can help you.
Hamed
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