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Featured Snippet: Simple Window Creation


#include <windows.h>

LRESULT CALLBACK WndProc(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;
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {
    WNDCLASSEX wc = {0};
    wc.cbSize = sizeof(WNDCLASSEX);
    wc.lpfnWndProc = WndProc;
    wc.hInstance = hInstance;
    wc.lpszClassName = L"MyWindowClass";

    if (!RegisterClassEx(&wc)) {
        MessageBox(NULL, L"Window Registration Failed!", L"Error", MB_ICONERROR | MB_OK);
        return 1;
    }

    HWND hWnd = CreateWindowEx(
        0,
        L"MyWindowClass",
        L"My First Win32 App",
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
        NULL, NULL, hInstance, NULL
    );

    if (!hWnd) {
        MessageBox(NULL, L"Window Creation Failed!", L"Error", MB_ICONERROR | MB_OK);
        return 1;
    }

    ShowWindow(hWnd, nCmdShow);
    UpdateWindow(hWnd);

    MSG msg = {0};
    while (GetMessage(&msg, NULL, 0, 0)) {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return 0;
}
                    

Tutorials and Guides

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