CWnd::ReflectLastMsg
Visual Studio 2010
This member function is called by the framework to reflect the last message to the child window.
static BOOL PASCAL ReflectLastMsg( HWND hWndChild, LRESULT* pResult = NULL );
This member function calls SendChildNotifyLastMsg if the window identified by hWndChild is an OLE control or a window in the permanent map.
For more information about message reflection, see Handling Reflected Messages.