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C#窗体MessageBox展示自动消失(移动开

发布时间: 2012-10-05 15:34:34 作者: rapoo

C#窗体MessageBox显示自动消失(移动开发Pocket PC 2003)
MessageBox提示框一般需要手动关闭,对于简单的信息提示,每次还要去关闭很麻烦。于是想到怎样能让MessageBox显示一段时间后自动关闭。虽然知道这肯定要用到定时器之类的,由于知识所限,最终没能够解决,于是求助袁小萍师姐,师姐就是师姐啊,不用太多时间就搞定了~,下面是代码:

using System;using System.Collections.Generic;using System.Text;using System.Runtime.InteropServices;using System.Windows.Forms;namespace pdaTraceInfoPlat.beans{    class MessageBoxTimeOut    {        private string _caption;        public void Show(string text, string caption, int timeout)        {            this._caption = caption;            StartTimer(timeout);            MessageBox.Show(text, caption);        }        private void StartTimer(int interval)        {            Timer timer = new Timer();            timer.Interval = interval;            timer.Tick += new EventHandler(Timer_Tick);            timer.Enabled = true;        }        private void Timer_Tick(object sender, EventArgs e)        {            KillMessageBox();            //停止计时器            ((Timer)sender).Enabled = false;        }        [DllImport("coredll.dll", EntryPoint = "FindWindow", CharSet = CharSet.Auto)]        private extern static IntPtr FindWindow(string lpClassName, string lpWindowName);        [DllImport("coredll.dll", CharSet = CharSet.Auto)]        public static extern int PostMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);        public const int WM_CLOSE = 0x10;        private void KillMessageBox()        {            //查找MessageBox的弹出窗口,注意对应标题            IntPtr ptr = FindWindow(null, this._caption);            if (ptr != IntPtr.Zero)            {                //查找到窗口则关闭                PostMessage(ptr, WM_CLOSE, IntPtr.Zero, IntPtr.Zero);            }        }           }}

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