How to check if COM object

[wesbird]

Hi,
I am working on a ObjectModified event handler. I got a lot of question
a) Is a good idea to watch Database.ObjectModified, or better just watch the speciafic object's ObjectModified
b) when I put a simple event handler function of Database.ObjectModified in Civil 3D, when I move a C3D object, a lot event got caught. how do I know which object is the one I watched, which event (in this case, MOVE) is I watched
c) in event handler function, how do I know if the object is a COM object?


Thank you,


Wes