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  • winform messagebox自动关闭

    using System;

    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Data;
    using System.Drawing;
    using System.Text;
    using System.Windows.Forms;
    using System.Runtime.InteropServices;
     
    namespace WindowsApplication1
    {
        public partial class AutoDeleteMessageBox : Form
        {
            [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;
     
            public AutoDeleteMessageBox()
            {
                InitializeComponent();
            }
     
            private void button1_Click(object sender, EventArgs e)
            {
                StartKiller();
                MessageBox.Show("3秒钟后自动关闭MessageBox窗口", "MessageBox");
            }
     
            private void StartKiller()
            {
                Timer timer = new Timer();
                timer.Interval = 3000; //3秒启动
                timer.Tick += new EventHandler(Timer_Tick);
                timer.Start();
            }
     
            private void Timer_Tick(object sender, EventArgs e)
            {
                KillMessageBox();
                //停止Timer
                ((Timer)sender).Stop();
            }
     
            private void KillMessageBox()
            {
                //按照MessageBox的标题,找到MessageBox的窗口
                IntPtr ptr = FindWindow(null, "MessageBox");
                if (ptr != IntPtr.Zero)
                {
                    //找到则关闭MessageBox窗口
                    PostMessage(ptr, WM_CLOSE, IntPtr.Zero, IntPtr.Zero);
                }
            }
        }
    }
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  • 原文地址:https://www.cnblogs.com/jearay/p/3620260.html
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