There is an example in the section "Push Mode and Pull Mode Support in Windows Vista" of the "Windows 7 Changes Related to Audio Drivers" documentation. (http://www.microsoft.com/whdc/device/audio/W7Changes-Audio.mspx) From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Edward_Averill@xxxxxxxxxxxx Sent: Thursday, September 02, 2010 8:54 AM To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] Code example for getting DDI from hdaudbus.sys? Hello list! I'm a newbie, so I have a newbies question: I need to send a VERB down to the HD audio hardware to perform jack sense for a diagnostic. The only driver I'm guaranteed to have is hdaudbus.sys, which should be sufficient. I see that I need to query for an HDAUDIO_BUS_INTERFACE_V2 interface, but I don't see any examples in the DDK on how to go about doing this. Can someone kindly point me in the direction of some code snippets and/or documentation on how to go about doing this? The mechanism I'm currently using (Setup API to get device class, then trying to enumerate interfaces) fails horribly. All info appreciated. ..ed.. ****************** 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/