(I asked this question on the wdmaudiodev mailing list without any takers.)
My client wants to override the friendly MIDI device name specified in the INF and follow a scheme like the following when multiple identical devices are connected…
“My Device”
“My Device (2)”
“My Device (3)”
… and so on. However, the audio stack is inserting a uniquifying prefix of "2- " onto the device name. Where does that come from, and is there a way to override it?
I can already change the FriendlyName successfully via IoOpenDeviceInterfaceRegistryKey following IoGetDeviceInterfaces with the PDO. This sends me to the following registry location, at least on Win8.1:
Key:
Control\DeviceClasses{6994ad04-93ef-11d0-a3cc-00a0c9223196}##?#USB#VID_&PID_##{6994ad04-93ef-11d0-a3cc-00a0c9223196}#Uart\Device
Parameters
Value name “FriendlyName” of type: REG_SZ
When I change the FriendlyName value, I can successfully see the new name as I enumerate MIDI devices, however I also still see the unwanted, and in my opinion, no longer necessary prefix of "2- ", so I end up with a device name of “2- My Device (2)” and so on. Ideas?