se pointer. Non-composite objects (direct subclasses of <CODE>
VisClass</CODE>
) have no special default behavior for input handling.

</P>
<P>
Typically, a visible object that needs to handle mouse input will subclass <CODE>
MSG_META_START_SELECT</CODE>
 (or one of the other press events such as <CODE>
MSG_META_START_MOVE_COPY</CODE>
). This message is sent when the user presses on the &quot;select&quot; mouse button while the pointer is over the object. In this method, the object should grab the mouse (as