About Delegate function, what does DMouseEvents_MoveNotifyEventHandler mean?

hello, programmers !!!

In the solidworks api, there are many delegate function,

I want use mouse events in vb.net, but there is no example.

how should I use the code: Dim instance As New DMouseEvents_MouseMoveNotifyEventHandler(AddressOf HandlerMethod),

and what dose it mean?

need some examples. welcome for any help !!!

SolidworksApi macros