Resets the volume for its device's audio ports. Obsolete, beginning with Windows Vista.
The buffer at Irp->AssociatedIrp.SystemBuffer contains the VOLUME_CONTROL value or values to be set.
Input Buffer Length
Parameters.DeviceIoControl.InputBufferLength in the I/O stack location indicates the size, in bytes, of the buffer, which must be greater than or equal to sizeof(VOLUME_CONTROL).
Output Buffer Length
The Information field is set to zero. The Status field is set to STATUS_SUCCESS, or possibly to STATUS_BUFFER_TOO_SMALL, STATUS_DEVICE_NOT_READY, STATUS_IO_TIMEOUT, STATUS_IO_DEVICE_ERROR, STATUS_VERIFY_REQUIRED, or STATUS_INVALID_DEVICE_REQUEST.
Beginning with Windows Vista, CDROM class drivers do not use this IOCTL. Prior to Windows Vista, this IOCTL was used for audio playback on older CD-ROM drives that supported direct audio output in hardware.
Client applications should use the Media Control Interface (MCI) API rather than issuing this IOCTL.
|Minimum supported client||Obsolete, beginning with Windows Vista.|
|Header||ntddcdrm.h (include Ntddcdrm.h)|