This structure contains parameters for the MCI_GETDEVCAPS message.
typedef struct _MCI_AMP_GETDEVCAPS_PARMS { HWND hwndCallback; /* Window handle. */ ULONG ulReturn; /* Return field. */ ULONG ulItem; /* Not used. */ USHORT usMessage; /* Message to query. */ USHORT usReserved0; /* Reserved field. */ ULONG ulLength; /* Length of structure. */ ULONG ulValue; /* Value to determine capabilities. */ ULONG ulAttribute; /* Flags modifying extended parms. */ ULONG ulExtended; /* Flags. */ } MCI_AMP_GETDEVCAPS_PARMS; typedef MCI _ AMP _ GETDEVCAPS _ PARMS * PMCI _ AMP _ GETDEVCAPS _ PARMS ;