在规定时间内自动关闭MessageBox弹出窗口的实现代码 (2)

            // button1
            //
            this.button1.Location = new System.Drawing.Point(176, 48);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(96, 24);
            this.button1.TabIndex = 0;
            this.button1.Text = "button1";
            this.button1.Click += new System.EventHandler(this.button1_Click);
            //
            // Form1
            //
            this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
            this.ClientSize = new System.Drawing.Size(292, 266);
            this.Controls.Add(this.button1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.ResumeLayout(false);

        }
        #endregion

        /**//// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        ...{
            Application.Run(new Form1());
        }

        private void button1_Click(object sender, System.EventArgs e)
        ...{
            StartKiller();
            MessageBox.Show("这里是MessageBox弹出的内容","MessageBox");
            MessageBox.Show("这里是跟随运行的窗口","窗口");
        }

        private void StartKiller()
        ...{
            Timer timer = new Timer();
            timer.Interval = 10000;    //10秒启动
            timer.Tick += new EventHandler(Timer_Tick);
            timer.Start();
        }

        private void Timer_Tick(object sender, EventArgs e)
        ...{
            KillMessageBox();
            //停止计时器
            ((Timer)sender).Stop();
        }

        private void KillMessageBox()
        ...{
            //查找MessageBox的弹出窗口,注意对应标题
            IntPtr ptr = FindWindow(null,"MessageBox");
            if(ptr != IntPtr.Zero)
            ...{
                //查找到窗口则关闭
                PostMessage(ptr,WM_CLOSE,IntPtr.Zero,IntPtr.Zero);
            }
        }

        [DllImport("user32.dll", EntryPoint = "FindWindow", CharSet=CharSet.Auto)]
        private extern static IntPtr FindWindow(string lpClassName, string lpWindowName);

        [DllImport("user32.dll", CharSet=CharSet.Auto)]
        public static extern int PostMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);

        public const int WM_CLOSE = 0x10;
    }
}
只要新建一个Winform项目并添加以下文件代码即可测试...