C#根据弹窗标题获取窗体句柄并模拟点击按钮（FindWindow，FindWindowEx，SendMessage）

任务：将下面弹窗自动关闭

 

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/// <summary> /// 找到窗口 /// </summary> /// <param name="lpClassName">窗口类名(例：Button)</param> /// <param name="lpWindowName">窗口标题</param> /// <returns></returns> [DllImport("user32.dll", EntryPoint = "FindWindow")] private extern static IntPtr FindWindow(string lpClassName, string lpWindowName);   /// <summary> /// 找到窗口 /// </summary> /// <param name="hwndParent">父窗口句柄（如果为空，则为桌面窗口）</param> /// <param name="hwndChildAfter">子窗口句柄（从该子窗口之后查找）</param> /// <param name="lpszClass">窗口类名(例：Button</param> /// <param name="lpszWindow">窗口标题</param> /// <returns></returns> [DllImport("user32.dll", EntryPoint = "FindWindowEx")] private extern static IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);   /// <summary> /// 发送消息 /// </summary> /// <param name="hwnd">消息接受窗口句柄</param> /// <param name="wMsg">消息</param> /// <param name="wParam">指定附加的消息特定信息</param> /// <param name="lParam">指定附加的消息特定信息</param> /// <returns></returns> [DllImport("user32.dll", EntryPoint = "SendMessageA")] private static extern int SendMessage(IntPtr hwnd, uint wMsg, int wParam, int lParam);   //窗口发送给按钮控件的消息，让按钮执行点击操作，可以模拟按钮点击 private const int BM_CLICK = 0xF5;

　通过窗体标题，循环查找该窗体，然后找到确定按钮，通过句柄发送点击消息，主动关闭弹窗

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private void Form1_Load(object sender, EventArgs e)        {            Task task = new Task(() =>            {                while (true)                {                    //测试警告框                    IntPtr maindHwnd = FindWindow(null, "提示");//主窗口标题                    if (maindHwnd != IntPtr.Zero)                    {                        IntPtr childHwnd = FindWindowEx(maindHwnd, IntPtr.Zero, null, "确定");//按钮控件标题                        if (childHwnd != IntPtr.Zero)                        {                            SendMessage(childHwnd, BM_CLICK, 0, 0);                        }                    }                }            });              task.Start();        }

　　

 

参考：

https://www.cnblogs.com/easypass/p/4067484.html

https://www.cnblogs.com/tary2017/articles/8031782.html