Use the IAudioEndpointVolume interface on the capture interface and query the hardware support mask. -----Original Message----- From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Andy_Wolpert@xxxxxxxxxxxx Sent: Tuesday, December 05, 2006 4:50 PM To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] Any sample code for using the device topology to access IAudioMute? I need to determine if a microphone supports a mute. I have a device which I know does not support mute. Using the IAudioEndpoint interface GetMute and SetMute do not report any error. Now I am think I m ay need to use the IDeviceTopology interface to see if the device supports a mute. Any suggestions to how to code that? Thanks, Andy ****************** 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/ ****************** 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/
