Hello, I need to enumerate volume controls, i.e. I need to build the tree: Volume Group Volume CD AUX .. etc I do the following: 1. Enumerating EndPoints to retrieve IPart (Volume Group) 2. Obtaining IDeviceTopology for each IPart 2. Enumerating volume controls in topology by using GetConnector method and querying IPart interface for each connector All works fine, the problem is when several Volume Groups have the same topology, i.e. Volume Group 1 and Volume Group 2 have the same IDeviceTopology object. The questions is how to determine which controls relate to Volume Group 1 and which controls relate to Volume Group 2? Or maybe I need to use another algorithm? Thanks, Andrew ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.com/