typedef struct tagMCI_OVLY_WINDOW_PARMSA {
    DWORD_PTR   dwCallback;
    HWND        hWnd;
    UINT        nCmdShow;
    LPCSTR      lpstrText;
} MCI_OVLY_WINDOW_PARMSA, *PMCI_OVLY_WINDOW_PARMSA, * LPMCI_OVLY_WINDOW_PARMSA;

typedef MCI_OVLY_WINDOW_PARMSA MCI_OVLY_WINDOW_PARMS;