关于 process.mainwindowhandle

smallxu 2008-07-11 06:44:44

我用 process.start启动事件查看器后（eventvwr），为什么不能获取mainwindowhandle？而启动notepad就可以获取mainwindowhandle？

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切换为时间正序

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smallxu 2008-07-13

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谢谢回答，那么为什么打开notepad进程不退出呢？

mabaoyes 2008-07-11

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//mmc 进程查看
private void button4_Click(object sender, EventArgs e)
{
Process[] eventvwrPro = Process.GetProcessesByName("mmc");

try
{
if (eventvwrPro[0].MainWindowTitle != null)
MessageBox.Show(eventvwrPro[0].MainWindowTitle);
}
catch(Exception eee)
{
}
}

mabaoyes 2008-07-11

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事件查看器是 mmc.exe 打开的事件查看器,进程退出
mainwindowhandle 和 MainWindowTitle
都取不到

把某个程序，嵌入到自己的程序中 this.exeName = @"D:\Program Files\Microsoft Office\OFFICE11\WINWORD.exe"; try { // Start the process process = System.Diagnostics.Process.Start(this.exeName); // Wait for process to be created and enter idle condition process.WaitForInputIdle(); // Get the main handle appWin = process.MainWindowHandle; } catch (Exception ex) { MessageBox.Show(this, ex.Message, "Error"); } // Put it into this form SetParent(appWin, this.Handle); // Remove border and whatnot // SetWindowLong(appWin, GWL_STYLE, WS_VISIBLE); // Move the window to overlay it on this window MoveWindow(appWin, 0, 0, this.Width, this.Height, true);

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Diagnostics; using System.Runtime.InteropServices; namespace exe_test { public partial class Form1 : Form { public Form1() { InitializeComponent(); } Process process = null; IntPtr appWin; private string exeName = ""; [DllImport("user32.dll", EntryPoint = "GetWindowThreadProcessId", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)] private static extern long GetWindowThreadProcessId(long hWnd, long lpdwProcessId); [DllImport("user32.dll", SetLastError = true)] private static extern IntPtr FindWindow(string lpClassName, string lpWindowName); [DllImport("user32.dll", SetLastError = true)] private static extern long SetParent(IntPtr hWndChild, IntPtr hWndNewParent); [DllImport("user32.dll", EntryPoint = "GetWindowLongA", SetLastError = true)] private static extern long GetWindowLong(IntPtr hwnd, int nIndex); [DllImport("user32.dll", EntryPoint = "SetWindowLongA", SetLastError = true)] private static extern long SetWindowLong(IntPtr hwnd, int nIndex, long dwNewLong); //private static extern int SetWindowLong(IntPtr hWnd, int nIndex, IntPtr dwNewLong); [DllImport("user32.dll", SetLastError = true)] private static extern long SetWindowPos(IntPtr hwnd, long hWndInsertAfter, long x, long y, long cx, long cy, long wFlags); [DllImport("user32.dll", SetLastError = true)] private static extern bool MoveWindow(IntPtr hwnd, int x, int y, int cx, int cy, bool repaint); [DllImport("user32.dll", EntryPoint = "PostMessageA", SetLastError = true)] private static extern bool PostMessage(IntPtr hwnd, uint Msg, long wParam, long lParam); private const int SWP_NOOWNERZORDER = 0x200; private const int SWP_NOREDRAW = 0x8; private const int SWP_NOZORDER = 0x4; private const int SWP_SHOWWINDOW = 0x0040; private const int WS_EX_MDICHILD = 0x40; private const int SWP_FRAMECHANGED = 0x20; private const int SWP_NOACTIVATE = 0x10; private const int SWP_ASYNCWINDOWPOS = 0x4000; private const int SWP_NOMOVE = 0x2; private const int SWP_NOSIZE = 0x1; private const int GWL_STYLE = (-16); private const int WS_VISIBLE = 0x10000000; private const int WM_CLOSE = 0x10; private const int WS_CHILD = 0x40000000; public string ExeName { get { return exeName; } set { exeName = value; } } private void button1_Click(object sender, EventArgs e) { this.exeName = @"calc.exe"; try { process = System.Diagnostics.Process.Start(this.exeName); process.WaitForInputIdle(); System.Threading.Thread.Sleep(150); appWin = process.MainWindowHandle; } catch (Exception ex) { MessageBox.Show(this, ex.Message, "Error"); } SetParent(appWin, this.splitContainer1.Panel2.Handle); MoveWindow(appWin, 0, 0, this.Width, this.Height, true); } } }

自己写的一个定时器，可以定时关机，很简单的一个东西。一个朋友用习惯，不想改用其他的，上传到这里随时可以下载。

本文实例讲述了C#列出当前系统所有正在运行程序的方法。分享给大家供大家参考。具体实现方法如下： Using System.Diagnostics; foreach(Process p in Process.GetProcesses(System.Environment.MachineName)) { if (p.MainWindowHandle! = IntPtr.Zero) { // Display the user name of the program Console.WriteLine (p); //string s = p.ToString (); } } 希望本文所

WPF 秒表计时器定时关机到计时关机 public const uint WM_SYSCOMMAND = 0x0112; public const uint SC_MONITORPOWER = 0xF170; [DllImport("user32")] public static extern IntPtr SendMessage(IntPtr hWnd, uint wMsg, uint wParam, int lParam); /// /// 关闭显示器 /// public void CloseScreen() { IntPtr windowHandle = Process.GetCurrentProcess().MainWindowHandle; SendMessage(windowHandle, WM_SYSCOMMAND, SC_MONITORPOWER, 2); // 2 为关闭显示器，－1则打开显示器 } using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using System.Windows.Threading; using IniFiles; namespace StopWatch { /// /// shutdonwCtrl.xaml 的交互逻辑 /// public partial class shutdonwCtrl : UserControl { DispatcherTimer timer1; DispatcherTimer timer2; public shutdonwCtrl() { InitializeComponent(); timer1 = new DispatcherTimer(); timer1.Tick += new EventHandler(OnTimer1); timer1.Interval = new TimeSpan(0, 0, 1); timer2 = new DispatcherTimer(); timer2.Tick += new EventHandler(OnTimer2); timer2.Interval = new TimeSpan(0, 0, 1); btn_cancel.IsEnabled = false; cancel1.IsEnabled = false; } IniFile INI = new IniFile(IniFile.AppIniName); public void LoadIni() { cbo_hour.Text = INI.ReadString("定时关机", "时", "0"); cbo_Minute.Text = INI.ReadString("定时关机", "分", "0"); cbo_Second.Text = INI.ReadString("定时关机", "秒", "0"); cbo1.Text = INI.ReadString("到计时关机", "分", "0"); //combobox1.Text = INI.ReadString("到计时", "时", "0"); //combobox2.Text = INI.ReadString("到计时", "分", "0"); //combobox3.Text = INI.ReadString("到计时", "秒", "0"); } public void SaveIni() { INI.WriteString("定时关机", "时", cbo_hour.Text); INI.WriteString("定时关机", "分", cbo_Minute.Text); INI.WriteString("定时关机", "秒", cbo_Second.Text); INI.WriteString("到计时关机", "分", cbo1.Text); } private void ShutDown() { System.Diagnostics.Process.Start("shutdown.exe", "-s -t 1"); } private void OnTimer1(object sender,EventArgs e) { if (second > 0) second--; label1.Content = string.Format("Windows将在 {0} 关机", TimerClass.GetTimeString1(second)); if (second <= 0 && !cbo1.IsEnabled) { ShutDown(); } } int second = 0; private void Button_Click(object sender, RoutedEventArgs e) { second = Convert.ToInt32(cbo1.Text) * 60; if (second <= 0) { MessageBox.Show("数值必须大于0！"); return; } timer1.Start(); cbo1.IsEnabled = false; cancel1.IsEnabled = true; start1.IsEnabled = false; } private void Button_Click_1(object sender, RoutedEventArgs e) { label1.Content = " "; timer1.Stop(); second = 0; cbo1.IsEnabled = true; cancel1.IsEnabled = false; start1.IsEnabled = true; } private void OnTimer2(object sender, EventArgs e) { if ( DateTime.Now.Hour == Convert.ToInt32(cbo_hour.Text) && DateTime.Now.Minute == Convert.ToInt32(cbo_Minute.Text) && DateTime.Now.Second == Convert.ToInt32(cbo_Second.Text) ) { ShutDown(); } } private void Button_Click_2(object sender, RoutedEventArgs e) { int s = Convert.ToInt32(cbo_hour.Text) * 3600 + Convert.ToInt32(cbo_Minute.Text) * 60 + Convert.ToInt32(cbo_Second.Text); timer2.Start(); label2.Content = string.Format("Windows将在 {0} 关机", TimerClass.GetTimeString1(s)); btn_start.IsEnabled = false; btn_cancel.IsEnabled = true; cbo_hour.IsEnabled = false; cbo_Minute.IsEnabled = false; cbo_Second.IsEnabled = false; } private void btn_cancel_Click(object sender, RoutedEventArgs e) { label2.Content = ""; timer2.Stop(); btn_start.IsEnabled = true; btn_cancel.IsEnabled = false; cbo_hour.IsEnabled = true; cbo_Minute.IsEnabled = true; cbo_Second.IsEnabled = true; } } } using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using System.Threading.Tasks; using System.Runtime.InteropServices; using System.Windows.Threading; using IniFiles; namespace StopWatch { /// /// TimerCtrl.xaml 的交互逻辑 /// public partial class TimerCtrl : UserControl { private DispatcherTimer timer1 = null; private DispatcherTimer timer2 = null; int SND_SYNC = 0x0000; /* play asynchronously */ //异步 int SND_ASYNC = 0x0001; int SND_LOOP = 8; [DllImport("winmm")] public static extern bool PlaySound(string szSound, IntPtr hMod, int flags); private void playSound3() { Task tsk = new Task(new Action(proc)); tsk.Start(); } private void proc() { PlaySound(@"Sound\2.wav", IntPtr.Zero, SND_SYNC); PlaySound(@"Sound\2.wav", IntPtr.Zero, SND_SYNC); PlaySound(@"Sound\2.wav", IntPtr.Zero, SND_SYNC); } public TimerCtrl() { InitializeComponent(); timer1 = new DispatcherTimer(); timer1.Tick += new EventHandler(OnTimer1); timer1.Interval = new TimeSpan(0, 0, 1); timer2 = new DispatcherTimer(); timer2.Tick += new EventHandler(OnTimer2); timer2.Interval = new TimeSpan(0, 0, 1); btn_reset1.IsEnabled = false; btn_pause1.IsEnabled = false; } int h = 0; int m = 0; int s = 0; int seconds = 0; private void OnTimer1(object sender, EventArgs e) { if (seconds < 1) { PlaySound(@"Sound\2.wav", IntPtr.Zero, SND_ASYNC); btn_start.IsEnabled = false; btn_reset1.IsEnabled = true; btn_pause1.IsEnabled = false; combobox1.IsEnabled = true; combobox2.IsEnabled = true; combobox3.IsEnabled = true; return; } seconds--; label1.Content = TimerClass.GetTimeString1(seconds); } private void btn_start_Click(object sender, RoutedEventArgs e) { h = Convert.ToInt32(combobox1.Text); m = Convert.ToInt32(combobox2.Text); s = Convert.ToInt32(combobox3.Text); seconds = h * 3600 + m * 60 + s; label1.Content = TimerClass.GetTimeString1(seconds); timer1.Start(); btn_start.IsEnabled = false; btn_reset1.IsEnabled = true; btn_pause1.IsEnabled = true; combobox1.IsEnabled = false; combobox2.IsEnabled = false; combobox3.IsEnabled = false; } private void btn_reset_Click(object sender, RoutedEventArgs e) { seconds = 0; label1.Content = TimerClass.GetTimeString1(seconds); timer1.Stop(); btn_start.IsEnabled = true; btn_reset1.IsEnabled = false; btn_pause1.IsEnabled = false; combobox1.IsEnabled = true; combobox2.IsEnabled = true; combobox3.IsEnabled = true; } private void pause1_Click(object sender, RoutedEventArgs e) { if (btn_pause1.Content.ToString() == "暂停") { timer1.Stop(); btn_pause1.Content = "继续"; } else { timer1.Start(); btn_pause1.Content = "暂停"; } } int SEC = 0; private void OnTimer2(object sender, EventArgs e) { if (SEC < 1) { timer2.Stop(); playSound3(); btn_quick.IsEnabled = true; btn_cancel2.IsEnabled = false; combobox4.IsEnabled = true; return; } SEC--; label4.Content = TimerClass.GetTimeString1(SEC); } private void Button_Click(object sender, RoutedEventArgs e) { SEC = Convert.ToInt32(combobox4.Text) * 60; timer2.Start(); combobox4.IsEnabled = false; btn_quick.IsEnabled = false; btn_cancel2.IsEnabled = true; } private void Button_Click_1(object sender, RoutedEventArgs e) { SEC = 2; label4.Content = "00:00:00"; timer2.Stop(); combobox4.IsEnabled = true; btn_quick.IsEnabled = true; } IniFile INI = new IniFile(IniFile.AppIniName); public void LoadIni() { combobox1.Text = INI.ReadString("到计时", "时", "0"); combobox2.Text = INI.ReadString("到计时", "分", "0"); combobox4.Text = INI.ReadString("快速计时", "分", "0"); } public void SaveIni() { INI.WriteString("到计时", "时", combobox1.Text); INI.WriteString("到计时", "分", combobox2.Text); INI.WriteString("到计时", "秒", combobox3.Text); INI.WriteString("快速计时", "分", combobox4.Text); } } } using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using System.Threading; using System.Windows.Threading; namespace StopWatch { /// /// WatchCtrl.xaml 的交互逻辑 /// public partial class WatchCtrl : UserControl { public WatchCtrl() { InitializeComponent(); timer1 = new DispatcherTimer(); timer1.Tick += new EventHandler(OnTimer1); timer1.Interval = new TimeSpan(0, 0, 1); timer1_1 = new DispatcherTimer(); timer1_1.Tick += new EventHandler(OnTimer1_1); timer1_1.Interval = new TimeSpan(0, 0, 0, 100); timer2 = new DispatcherTimer(); timer2.Tick += new EventHandler(OnTimer2); timer2.Interval = new TimeSpan(0, 0, 1); } private DispatcherTimer timer1 = null; private DispatcherTimer timer1_1 = null; private DispatcherTimer timer2 = null; private void OnTimer1(object sender, EventArgs e) { second++; label1.Content = TimerClass.GetTimeString1(second) ;//DateTime.Now.ToString("h:mm:ss"); } public int second = 0; private int second1 = 0; public int count = 0; private void OnTimer1_1(object sender, EventArgs e) { //label1.Content = TimerClass.GetTimeString1(second) + "." + count.ToString();//DateTime.Now.ToString("h:mm:ss"); //count++; //if (count > 9) // count = 0; } private void OnTimer2(object sender, EventArgs e) { second1++; label2.Content = TimerClass.GetTimeString1(second1) ;//.ToString("h:mm:ss"); } private void btn_start_Click(object sender, RoutedEventArgs e) { timer1.Start(); timer2.Start(); if (btn_start.Content.ToString() == "停止") { btn_start.Content = "开始"; btn_reset.Content = "复位"; timer1.Stop(); timer2.Stop(); } else { btn_start.Content = "停止"; btn_reset.Content = "计次"; } } private int counter = 0; private void btn_reset_Click(object sender, RoutedEventArgs e) { if (btn_reset.Content.ToString() == "复位") { second = 0; second1 = 0; label1.Content = "00:00:00"; label2.Content = "00:00:00"; timer1.Stop(); timer2.Stop(); } else { if (second1 > 0) { counter++; listbox1.Items.Add(string.Format(" {0}\t{1}", counter, label2.Content)); } second1 = 0; label2.Content = "00:00:00"; } if (btn_reset.Content.ToString() == "复位" && btn_start.Content.ToString()=="开始") { listbox1.Items.Clear(); } } } }

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