Thanks guys, I figured it out how to do this. writing to the registry from vc++ will do the work. Karthik SG On Thu, Jun 11, 2009 at 12:01 AM, Frank Yerrace <Frank.Yerrace@xxxxxxxxxxxxx > wrote: > There is no documented way to do this. > > > > My usual follow up question: why do you want to? > > > > Frank Yerrace > > Microsoft Corporation > > This posting is provided "AS IS" with no warranties, and confers no rights. > > > > *From:* wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto: > wdmaudiodev-bounce@xxxxxxxxxxxxx] *On Behalf Of *Karthik Gurumurthy > *Sent:* Wednesday, June 10, 2009 1:25 AM > *To:* wdmaudiodev@xxxxxxxxxxxxx > *Subject:* [wdmaudiodev] setting audio device as default from the VC++ > > > > Hi all, > How can i set an audio device driver to default from an VC++ > program. > > Karthik SG >