LONG DispatchMessage(lpMsg)
This function passes the message in the MSG structure pointed to by the lpMsg parameter to the window function of the specified window.
| Parameter | Type/Description | |
| lpMsg | LPMSG Points to an MSG data structure that contains message information from the Windows application queue. | |
| The structure must contain valid message values. If lpMsg points to a WM_TIMER message and the lParam parameter of the WM_TIMER message is not NULL, then the lParam parameter is the address of a function that is called instead of the window function. |
The return value specifies the value returned by the window function. Its meaning depends on the message being dispatched, but generally the return value is ignored.