DRV_QUERYDEVNODE

Queries the devnode associated with this device. If there is no devnode, this message returns a NULL devnode.

The system intercepts this message and returns the appropriate value without sending the message to the device driver. Most drivers will not use this message.

• Returns MMSYSERR_NOERROR if successful; otherwise, returns an error value.

dwParam1

Pointer to a buffer to place the DevNode in.

dwParam2

Set to zero.