I have implemented an AVStream capture-only device and neede only to implement only some custom handlers and KSPROPERTY_AUDIO_POSITION. Are you sure you need to implement KSPROPERTY_PIN_PHYSICALCONNECTION? My understanding was that the framework (AVStream) does this for you. Igor Slewsarev <slewsarev@xxxxxxxxx> wrote: Hello! I'am trying to implement AVStream minidriver for audio capture device. Now I find I have to implement topology miniport, but I don't know how to support KSPROPSETID_Pin.KSPROPERTY_PIN_PHYSICALCONNECTION property. Any suggestions? Thank you for help. S.Y. Igor V. Slewsarev __________________________________ Do you Yahoo!? Free Pop-Up Blocker - Get it now http://companion.yahoo.com/ ****************** 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.de/ --------------------------------- Do you Yahoo!? Free Pop-Up Blocker - Get it now