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C-/C++-Quelltext

Window window("Hello, bla bla", 600, 400);
Context context(window, parameter....);

C-/C++-Quelltext

Context::Context(const char* titel, int,...){
// Erstelle Fenster

pContext = new Context(*this); // Error ensteht hier.
// ENDE des Konstruktors
}

Window window(...);

C-/C++-Quelltext

Window::Window(const char* pTitle,
                    uint32_t nWidth,
                    uint32_t nHeight,
                    bool bFullscreen,
                    bool bVisible){


        WNDCLASSEX  wc      = {};
        wc.cbSize           = sizeof(WNDCLASSEX);
        wc.hInstance        = GetModuleHandle(nullptr);
        wc.lpfnWndProc      = internal::WndProc;
        wc.lpszClassName    = pTitle;
        wc.style            = CS_VREDRAW | CS_HREDRAW | CS_OWNDC;

        if(0 == RegisterClassEx(&wc)){
            //
            //  The exception class will contain the error code and
            //  a error description.
            //
            std::error_code err_code(GetLastError(), std::system_category());
            throw std::system_error(err_code);
        }


        if(true == bFullscreen){
            DEVMODE dmScreen    = {};
            dmScreen.dmSize     = sizeof(DEVMODE);

            for(int i = 0; EnumDisplaySettings(nullptr, i, &dmScreen); i++){
                if((dmScreen.dmPelsWidth == nWidth) && (dmScreen.dmPelsHeight == nHeight) && (dmScreen.dmBitsPerPel == 32)){
                    break;
                }
            }

            ChangeDisplaySettings(&dmScreen, CDS_FULLSCREEN);

        }

        pHandle = new internal::WindowHandle(nWidth, nHeight);

        RECT clientArea = { 0, 0, (long) nWidth, (long) nHeight};
        AdjustWindowRect(&clientArea, bFullscreen ? WS_POPUP : WS_OVERLAPPEDWINDOW, false);

        pHandle->handle = CreateWindowEx(
            bFullscreen ? WS_EX_APPWINDOW : NULL,
            pTitle,
            pTitle,
            bFullscreen ? WS_POPUP : WS_OVERLAPPEDWINDOW,    // NOTE: Perhaps I'll create a window config struct?
            GetSystemMetrics(SM_CXSCREEN) / 2,
            GetSystemMetrics(SM_CYSCREEN) / 2,
            clientArea.right    - clientArea.left,
            clientArea.bottom   - clientArea.top,
            nullptr,    // We're not having a parent window
            nullptr,    // nor a win32 menu.
            GetModuleHandle(nullptr),
            pHandle    // Is needed for the router 'WndProc'.
        );

        if(nullptr == pHandle->handle){
            delete pHandle;    // We don't want a memory leak, do we?
            std::error_code err_code(GetLastError(), std::system_category());
            throw std::system_error(err_code);
        }

        if(true == bVisible)
            ShowWindow(pHandle->handle, SW_SHOWDEFAULT);