DEFWINDOWPROC FUNCTION

DEFWINDOWPROC FUNCTION:

Our application created by us may not be able to handle or process all the messages it receives from MSG structure through GetMessage function, So such unprocessed messages should be sent for default processing.


This default processing is done by a function DefWindowProc ().

The syntax of the function is:

DefWindowProc (HWND hWnd, UINT message, WPARAM wParam , LPARAM lParam)

This function will take the same four parameters as ProcessMessagefn because those are required to process any message.