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   | #include <windows.h>
#define NAME "Test"
class Window
{
    public:
        Window(HINSTANCE);
        void show(BOOL);
        LRESULT CALLBACK proc (HWND, UINT, WPARAM, LPARAM);
    private:
        HWND _hWindow;
};
Window::Window(HINSTANCE instance)
{
    WNDCLASSEX wincl;
    wincl.hInstance = instance;
    wincl.lpszClassName = NAME;
    wincl.lpfnWndProc = proc;
    wincl.style = CS_DBLCLKS;
    wincl.cbSize = sizeof (WNDCLASSEX);
    wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
    wincl.lpszMenuName = NULL;
    wincl.cbClsExtra = 0;
    wincl.cbWndExtra = 0;
    wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
    if (RegisterClassEx (&wincl))
    {
        _hWindow = CreateWindowEx (
                                   0,
                                   NAME,
                                   NAME,
                                   WS_OVERLAPPEDWINDOW,
                                   CW_USEDEFAULT,
                                   CW_USEDEFAULT,
                                   544,
                                   375,
                                   HWND_DESKTOP,
                                   NULL,
                                   instance,
                                   NULL
                              );
    }
}
void Window::show(BOOL state)
{
    ShowWindow(_hWindow, (state==TRUE)?SW_SHOW:SW_HIDE);
    return;
}
int WINAPI WinMain (HINSTANCE hThisInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR lpszArgument,
                     int nFunsterStil)
{
    MSG messages;
    Window window(hThisInstance);
    window.show(TRUE);
    while (GetMessage (&messages, NULL, 0, 0))
    {
        TranslateMessage(&messages);
        DispatchMessage(&messages);
    }
    return messages.wParam;
}
LRESULT CALLBACK Window::proc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
        case WM_DESTROY:
            PostQuitMessage (0);
            break;
        default:
            return DefWindowProc (hwnd, message, wParam, lParam);
    }
    return 0;
} | 
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