mmDrv_Open_Parms

type mmDrv_Open_Parms = record

  hwndCallback: HWND;

  usDeviceID: Integer;

  usDeviceType: Integer;

  usDeviceOrd: Integer;

  pInstance: Pointer;

  szDevDLLName: array [0..259] of AnsiChar;

  pszElementName: PAnsiChar;

  usDevParmLen: Integer;

  pDevParm: Pointer;

  Reserved0: Pointer;

  usResourceUnitsRequired: Integer;

  usResourceClass: Integer;

  usResourcePriority: Integer;

  ulParam2: LongInt;

end;