Conversion string structure.
typedef struct _CNVSTR { ULONG ulSize; ULONG ulFlag; USHORT usInpStrOff; USHORT usInpPhrsOff; USHORT usOutStrOff; USHORT usOutAtrOff; USHORT usOutPhrsOff; USHORT usOutPosOff; USHORT InOutStr[1]; } CNVSTR; typedef CNVSTR * PCNVSTR ;