WPF捕捉Windows关机事件

    private const int SC_SCREENSAVE = 0xF140;
         private const int WM_QUERYENDSESSION = 0x0011;
         private bool IsScreenSave = false;
         private bool IsWindowStopClosing = false;

变量

不废话，直接贴代码,构造函数中

public XX{

    // 获得窗口句柄
                 IntPtr hwnd = new WindowInteropHelper(this).Handle;
                 // 在Win32窗口中显示WPF的内容
                 HwndSource src = HwndSource.FromHwnd(hwnd);
                 //接收窗口消息的处理程序实现（基于 System.Windows.Interop.HwndSourceHook 委托）
                 src.AddHook(new HwndSourceHook(WndProc));

Register

}

     /// <summary>
         /// 重新WndProc
         /// </summary>
         /// <param name="hwnd">窗口句柄</param>
         /// <param name="msg">消息ID</param>
         /// <param name="wParam">消息的 wParam 值</param>
         /// <param name="lParam">消息的 lParam 值</param>
         /// <param name="handled">指示该消息是否已处理的值。如果该消息已处理，请将值设置为 true；否则请将其设置为 false</param>
         /// <returns></returns>
         private IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
         {
             if (msg == WM_QUERYENDSESSION)
             {
                 using (var wcf = new KeFuServicesClient())
                 {
                     wcf.UpdateUserState(MainPanelWindow.ClientServiceID, UserStates.UnLine);
                 }
             }
             return IntPtr.Zero;
         }

捕捉操作系统关机事件

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