System Functions: LogOff, Restart, Shutdown, Hibernate, Standby

image_pdfimage_print
   
 
// crudwork
// Copyright 2004 by Steve T. Pham (http://www.crudwork.com)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with This program.  If not, see <http://www.gnu.org/licenses/>.

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
#if !SILVERLIGHT
using System.Windows.Forms;
#endif

namespace crudwork.Utilities
{
    /// <summary>
    /// System Functions: LogOff, Restart, Shutdown, Hibernate, Standby
    /// </summary>
    public static class SystemFunctions
    {
        [DllImport("user32.dll")]
        private static extern void LockWorkStation();

        [DllImport("user32.dll")]
        private static extern int ExitWindowsEx(int uFlags, int dwReason);

        private enum RecycleFlags : uint
        {
            SHERB_NOCONFIRMATION = 0x00000001,
            SHERB_NOPROGRESSUI = 0x00000002,
            SHERB_NOSOUND = 0x00000004
        }

        [DllImport("Shell32.dll", CharSet = CharSet.Unicode)]
        private static extern uint SHEmptyRecycleBin(IntPtr hwnd, string pszRootPath, RecycleFlags dwFlags);



        /// <summary>
        /// Empty the System Recycle Bin
        /// </summary>
        public static uint EmptyRecycleBin()
        {
            return SHEmptyRecycleBin(IntPtr.Zero, null, 0);
        }

        /// <summary>
        /// Lock the workstation
        /// </summary>
        public static void Lock()
        {
            LockWorkStation();
        }

        /// <summary>
        /// Log off the user
        /// </summary>
        /// <param name="force"></param>
        public static void LogOff(bool force)
        {
            ExitWindowsEx(force ? 4 : 0, 0);
        }

        /// <summary>
        /// Reboot the system
        /// </summary>
        public static void Reboot()
        {
            ExitWindowsEx(2, 0);
        }

        /// <summary>
        /// Shutdown the system
        /// </summary>
        public static void Shutdown()
        {
            ExitWindowsEx(1, 0);
        }

#if !SILVERLIGHT
        /// <summary>
        /// Put the system into hibernate mode
        /// </summary>
        public static void Hibernate()
        {
            Hibernate(true, true);
        }

        /// <summary>
        /// Put the system into hibernate mode
        /// </summary>
        /// <param name="force"></param>
        /// <param name="disableWakeupEvent"></param>
        public static void Hibernate(bool force, bool disableWakeupEvent)
        {
            Application.SetSuspendState(PowerState.Hibernate, force, disableWakeupEvent);
        }

        /// <summary>
        /// Put the system into standby mode
        /// </summary>
        public static void Standby()
        {
            Standby(true, true);
        }

        /// <summary>
        /// Put the system into standby mode
        /// </summary>
        /// <param name="force"></param>
        /// <param name="disableWakeupEvent"></param>
        public static void Standby(bool force, bool disableWakeupEvent)
        {
            Application.SetSuspendState(PowerState.Suspend, force, disableWakeupEvent);
        }
#endif
    }
}