[wdmaudiodev] Correlation of DSound device with PnP device ID

  • From: Art Edwards <ntdev@xxxxxxxxxxxx>
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Thu, 10 Jul 2003 16:58:56 -0400

Please disregard my earlier post.  I finally understand how to use the 
SetupDiXxx functions to do this.  Duh !

I am curious about something though.  In the DSEnumCallback function, where 
does the lpGuid ("GUID that identifies the DirectSound driver") come from ?  It 
appears to be generated dynamically (on WinXPSP1 at least).  Is there any 
documented use for it other than as a parameter to DirectSoundCreate ?

>Does anyone know how to correlate a DirectSound device with the PnP ID of the 
>hardware ?
>I would like my application to run only on certain hardware.  
>I know I could test the lpcstrDescription parameter in my DSEnumCallback 
>routine.  For example:
>   if (strcmp (lpcstrDescription, "My Device Name"))
>   {
>      // don't wanna use this device...
>   }
>But, I would like to be a bit more certain that it's really the correct 
>device.  So, I'd like to (somehow) get the hardware ID (e.g. 
>VEN_1234&DEV_5678&SUBSYS_AA55AA55&REV_01) associated with the device and do a 
>strcmp or regular expression match on that instead.


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