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Shutdown (15 second timeout)

This script will tell the system to shutdown after 15 seconds.
Minimum Version
Created By
Date Created
Nov 18, 2016
Date Last Modified
Nov 18, 2016

Scripted Function (Macro) Code

// The 15 second timeout allows enough time to cancel if someone's using the computer.
// The config class on line 7 can be used to customize what happens.

using System; using System.Text; using System.Windows.Forms; using System.Runtime.InteropServices; using System.Diagnostics;
public static class DisplayFusionFunction
	internal static class config {
		// number of seconds to wait (remove the *1000 on line 37 to use milliseconds instead)
		internal const uint Timeout = 15;
		// The text in the messagebox
		internal const string Text = "The system will shut down in {0} seconds.";
        // The title of the window.
		internal const string Title = "System shutting down in {0} seconds";
		// The icon. Valid icons are described at
		internal const MessageBoxIcon icon = MessageBoxIcon.Exclamation;
	public static void Run(IntPtr windowHandle)
        Process proc = new Process();
        proc.StartInfo.FileName = "CMD.exe";
        proc.StartInfo.CreateNoWindow = true;
        proc.StartInfo.Arguments = "/c shutdown.exe /s /hybrid /t "+config.Timeout;
        proc.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
        string Title=String.Format(config.Title,config.Timeout);
        string Text=String.Format(config.Text,config.Timeout);
        DialogResult DoShutdown = MessageBoxEx.Show(Text,Title,MessageBoxButtons.OKCancel,config.icon,(config.Timeout-1)*1000);
		if(DoShutdown == DialogResult.Cancel) {
			Process proc2 = new Process();
            proc2.StartInfo.FileName = "CMD.exe";
            proc2.StartInfo.CreateNoWindow = true;
            proc2.StartInfo.Arguments = "/c shutdown.exe /a";
            proc2.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;

//borrowed from
//unnecessary stuff removed
namespace System.Windows.Forms
	public class MessageBoxEx
		public static DialogResult Show(string text, string caption, MessageBoxButtons buttons, MessageBoxIcon icon, uint uTimeout)
			Setup(caption, uTimeout);
			return MessageBox.Show(text, caption, buttons, icon);
		public delegate IntPtr HookProc(int nCode, IntPtr wParam, IntPtr lParam);
		public delegate void TimerProc(IntPtr hWnd, uint uMsg, UIntPtr nIDEvent, uint dwTime);
		public const int WH_CALLWNDPROCRET = 12;
		public const int WM_DESTROY = 0x0002;
		public const int WM_INITDIALOG = 0x0110;
		public const int WM_TIMER = 0x0113;
		public const int WM_USER = 0x400;
		public const int DM_GETDEFID = WM_USER + 0;

		public static extern UIntPtr SetTimer(IntPtr hWnd, UIntPtr nIDEvent, uint uElapse, TimerProc lpTimerFunc);

		public static extern IntPtr SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, IntPtr lParam);

		public static extern IntPtr SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);

		public static extern int UnhookWindowsHookEx(IntPtr idHook);
		public static extern IntPtr CallNextHookEx(IntPtr idHook, int nCode, IntPtr wParam, IntPtr lParam);

		public static extern int GetWindowTextLength(IntPtr hWnd);

		public static extern int GetWindowText(IntPtr hWnd, StringBuilder text, int maxLength);

		public static extern int EndDialog(IntPtr hDlg, IntPtr nResult);

		public struct CWPRETSTRUCT
			public IntPtr lResult;
			public IntPtr lParam;
			public IntPtr wParam;
			public uint   message;
			public IntPtr hwnd;

		private const int TimerID = 42;
		private static HookProc hookProc;
		private static TimerProc hookTimer;
		private static uint hookTimeout;
		private static string hookCaption;
		private static IntPtr hHook;
		static MessageBoxEx()
			hookProc = new HookProc(MessageBoxHookProc);
			hookTimer = new TimerProc(MessageBoxTimerProc);
			hookTimeout = 0;
			hookCaption = null;
			hHook = IntPtr.Zero;
		private static void Setup(string caption, uint uTimeout)
			if (hHook != IntPtr.Zero)
				throw new NotSupportedException("multiple calls are not supported");
			hookTimeout = uTimeout;
			hookCaption = caption != null ? caption : "";
			hHook = SetWindowsHookEx(WH_CALLWNDPROCRET, hookProc, IntPtr.Zero, AppDomain.GetCurrentThreadId());
		private static IntPtr MessageBoxHookProc(int nCode, IntPtr wParam, IntPtr lParam)
			if (nCode < 0)
				return CallNextHookEx(hHook, nCode, wParam, lParam);

			CWPRETSTRUCT msg = (CWPRETSTRUCT)Marshal.PtrToStructure(lParam, typeof(CWPRETSTRUCT));
			IntPtr hook = hHook;

			if (hookCaption != null && msg.message == WM_INITDIALOG)
				int nLength = GetWindowTextLength(msg.hwnd);
				StringBuilder text = new StringBuilder(nLength + 1);

				GetWindowText(msg.hwnd, text, text.Capacity);

				if (hookCaption == text.ToString())
					hookCaption = null;
					SetTimer(msg.hwnd, (UIntPtr)TimerID, hookTimeout, hookTimer);
					hHook = IntPtr.Zero;

			return CallNextHookEx(hook, nCode, wParam, lParam);

		private static void MessageBoxTimerProc(IntPtr hWnd, uint uMsg, UIntPtr nIDEvent, uint dwTime)
			if (nIDEvent == (UIntPtr)TimerID)
				short dw = (short)SendMessage(hWnd, DM_GETDEFID, IntPtr.Zero, IntPtr.Zero);
				EndDialog(hWnd, (IntPtr)dw);