InSendMessage  GP1CAY 

The InSendMessage function specifies whether the current window procedure is processing a message that was sent from another thread by a call to the SendMessage1724MSN function.

BOOL InSendMessage(VOID)
 

Parameters

This function has no parameters.

Return Values

If the window procedure is processing a message sent to it from another thread using the SendMessage function, the return value is nonzero.

If the window procedure is not processing a message sent to it from another thread using the SendMessage function, the return value is zero.

See Also