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  • 第一个windows桌面应用程序

    前期准备:

    安装VS2019

    安装必要的插件

     

    示例代码

    #ifndef UNICODE
    #define UNICODE
    #endif 
    
    #include <windows.h>
    
    LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
    
    int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine, int nCmdShow)
    {
        // Register the window class.
        const wchar_t CLASS_NAME[] = L"Sample Window Class";
    
        WNDCLASS wc = { };
    
        wc.lpfnWndProc = WindowProc;
        wc.hInstance = hInstance;
        wc.lpszClassName = CLASS_NAME;
    
        RegisterClass(&wc);
    
        // Create the window.
    
        HWND hwnd = CreateWindowEx(
            0,                              // Optional window styles.
            CLASS_NAME,                     // Window class
            L"Learn to Program Windows",    // Window text
            WS_OVERLAPPEDWINDOW,            // Window style
    
            // Size and position
            CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
    
            NULL,       // Parent window    
            NULL,       // Menu
            hInstance,  // Instance handle
            NULL        // Additional application data
        );
    
        if (hwnd == NULL)
        {
            return 0;
        }
    
        ShowWindow(hwnd, nCmdShow);
    
        // Run the message loop.
    
        MSG msg = { };
        while (GetMessage(&msg, NULL, 0, 0))
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    
        return 0;
    }
    
    LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
    {
        switch (uMsg)
        {
        case WM_DESTROY:
            PostQuitMessage(0);
            return 0;
    
        case WM_PAINT:
        {
            PAINTSTRUCT ps;
            HDC hdc = BeginPaint(hwnd, &ps);
    
    
    
            FillRect(hdc, &ps.rcPaint, (HBRUSH)(COLOR_WINDOW + 1));
    
            EndPaint(hwnd, &ps);
        }
        return 0;
    
        }
        return DefWindowProc(hwnd, uMsg, wParam, lParam);
    }
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  • 原文地址:https://www.cnblogs.com/chenyingzuo/p/15251475.html
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