Returning LRESULT in DefWindowProc()

[VFaul]

I have a DefWindowProc() function to catch unhandled messages. This function returns an LRESULT. I have a switch statement and in some cases I call CWnd::DefWindowProc(). So I simply return the result of the call to CWnd::DefWindowProc(). In other cases, I handle the message. What should the value of LRESULT be when I handle the message?

[PJ Arends]

Depends on the message. The documentation will tell you if the message needs a certain return value. If it does not then simply return zero.

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[David Crow]

Per MSDN: The return value is the result of the message processing and depends on the message sent.

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