1 typedef struct 2 { 3 LPSTR LeftVolumeName; 4 LPSTR RightVolumeName; 5 ULONG DefaultVolume; 6 ULONG Type; 7 ULONG DeviceType; 8 char Key[4]; 9 LPSTR PrototypeName; 10 PVOID DeferredRoutine; 11 PVOID ExclusionRoutine; 12 PVOID DispatchRoutine; 13 PVOID DevCapsRoutine; 14 PVOID HwSetVolume; 15 ULONG IoMethod; 16 }SOUND_DEVICE_INIT; 17