BEGIN_MESSAGE_MAP
Begins the definition of your message map.
BEGIN_MESSAGE_MAP(theClass, baseClass )
Parameters
theClass
Specifies the name of the class whose message map this is.baseClass
Specifies the name of the base class of theClass.
Remarks
In the implementation (.cpp) file that defines the member functions for your class, start the message map with the BEGIN_MESSAGE_MAP macro, then add macro entries for each of your message-handler functions, and complete the message map with the END_MESSAGE_MAP macro.
For more information about message maps, see Message Maps (MFC)
Example
BEGIN_MESSAGE_MAP(CMainFrame, CMDIFrameWnd)
ON_WM_CREATE()
END_MESSAGE_MAP()
Requirements
Header: afxwin.h