typedef struct tagWNDCLASSEXA {
    UINT        cbSize;
    UINT        style;
    WNDPROC     lpfnWndProc;
    int         cbClsExtra;
    int         cbWndExtra;
    HINSTANCE   hInstance;
    HICON       hIcon;
    HCURSOR     hCursor;
    HBRUSH      hbrBackground;
    LPCSTR      lpszMenuName;
    LPCSTR      lpszClassName;
    HICON       hIconSm;
}WNDCLASSEXA,*PWNDCLASSEXA,*NPWNDCLASSEXA,*LPWNDCLASSEXA;
