typedef MCI_OVLY_LOAD_PARMSW MCI_OVLY_LOAD_PARMS;

typedef MCI_OVLY_LOAD_PARMSA MCI_OVLY_LOAD_PARMS;

typedef struct tagMCI_OVLY_LOAD_PARMS {
    DWORD   dwCallback;
    LPCSTR  lpfilename;
    RECT    rc;
} MCI_OVLY_LOAD_PARMS, FAR * LPMCI_OVLY_LOAD_PARMS;