typedef struct tagMCI_OVLY_LOAD_PARMSA {
    DWORD_PTR   dwCallback;
    LPCSTR      lpfilename;
    RECT    rc;
} MCI_OVLY_LOAD_PARMSA, *PMCI_OVLY_LOAD_PARMSA, * LPMCI_OVLY_LOAD_PARMSA;

typedef MCI_OVLY_LOAD_PARMSA MCI_OVLY_LOAD_PARMS;