The KSStudio help has usage examples #2 and #3 which discuss this. May be that helps. Shyam V. Narayanan -----Original Message----- From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Jeff Pages Sent: Thursday, March 04, 2004 11:48 PM To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] Mixer problem with capture-only wave device on Windows 2000 I have a capture-only device for which I have developed a WavePci driver, and everything is fine under Windows XP. However, there is a problem with the mixer side of it under Windows 2000. The mixer API sees the device and it reports the correct number of source and destination lines (1 of each) but it doesn't find the volume and mute controls on the destination line. Sndvol32 also sees my device but doesn't find any controls either. If I put in a dummy playback subdevice in the driver then Windows 2000 becomes happy and finds all of my capture controls (as well as my dummy playback controls), however I would prefer not to have to do that since when the device is first installed Windows will try to make its dummy output the default playback device. This is the dump of my topology returned in IMiniportTopology::GetDescription - I can't see anything obviously wrong here... PINS 0 PIN_LINEIN_SOURCE 1 PIN_WAVEIN_DEST NODES 0 WAVEIN_SUM 1 VOLUME 2 MUTE CONNECTIONS 0 (-1,0)->(0,1) 1 (0,0)->(1,1) 2 (1,0)->(2,1) 3 (2,0)->(-1,1) Any thoughts anyone? Jeff Pages Innes Corporation Pty Ltd ****************** 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/ ****************** 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/