typedef struct tagMCI_OVLY_OPEN_PARMSA {
    DWORD_PTR   dwCallback;
    MCIDEVICEID wDeviceID;
    LPCSTR      lpstrDeviceType;
    LPCSTR      lpstrElementName;
    LPCSTR      lpstrAlias;
    DWORD   dwStyle;
    HWND    hWndParent;
} MCI_OVLY_OPEN_PARMSA, *PMCI_OVLY_OPEN_PARMSA, *LPMCI_OVLY_OPEN_PARMSA;

typedef LPMCI_OVLY_OPEN_PARMSA LPMCI_OVLY_OPEN_PARMS;