C# - Capturing Windows Messages from a specific application

Question

I\'m writing a C# application which needs to intercept Window Messages that another applications is sending out. The company who wrote the application I\'m

Answer 1

Turns out I also needed to send the other application a PostMessage asking it to send my application the Window Messages.

PostMessage((int)_hWnd, _windowsMessages[0], SHOCK_REQUEST_ACTIVE_CALLINFO, (int)_thisHandle);
PostMessage((int)_hWnd, _windowsMessages[0], SHOCK_REQUEST_ALL_REGISTRATIONINFO, (int)_thisHandle);
PostMessage((int)_hWnd, _windowsMessages[0], SHOCK_REQUEST_CALL_EVENTS, (int)_thisHandle);
PostMessage((int)_hWnd, _windowsMessages[0], SHOCK_REQUEST_REGISTRATION_EVENTS, (int)_thisHandle);

Not pretty code, but good enough to prove it works which is all I need for now :)