typedef struct tagMCI_OVLY_WINDOW_PARMSW {
    DWORD_PTR   dwCallback;
    HWND        hWnd;
    UINT        nCmdShow;
    LPCWSTR     lpstrText;
} MCI_OVLY_WINDOW_PARMSW, *PMCI_OVLY_WINDOW_PARMSW, * LPMCI_OVLY_WINDOW_PARMSW;

typedef LPMCI_OVLY_WINDOW_PARMSW LPMCI_OVLY_WINDOW_PARMS;