obtaining a mixer for a given device interfaceJeff, Have you got some example code you could share on this ? Many thx. Jerry ----- Original Message ----- From: Jeff Pages To: wdmaudiodev@xxxxxxxxxxxxx Sent: Thursday, July 21, 2005 6:37 AM Subject: [wdmaudiodev] Re: obtaining a mixer for a given device interface Given a mixer Device ID, you can obtain its corresponding device interface by calling mixerMessage with DRV_QUERYDEVICEINTERFACE (and DRV_QUERYDEVICEINTERFACESIZE). See the latest DDK under WDM Audio Extensions to Legacy Windows Multimedia APIs for details. This should (hopefully) match with one of the device interfaces you found from SetupDiEnumDeviceInterfaces. Jeff Pages Innes Corporation Pty Ltd