DRV_QUERYDRIVERIDS

Returns the list of VxD identifiers associated with this device. Typically, a Plug and Play device has only one VXD associated with it.

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 fill with the list of IDs.

dwParam2

Initially contains a pointer to a DWORD with the number of IDs (WORDs) which can be placed in the buffer. The system copies the number of IDs actually copied into the buffer to this variable.