CODEWITHSUNDEEP
c#wpf
Raj
Raj

Reputation: 4435

Shutdown WPF application after n seconds of inactivity

How do I shutdown a WPF application after 'n' seconds of inactivity?

Upvotes: 4

Views: 8726

Answers (4)

sam
sam

Reputation: 151

public MainWindow()
    {
        InitializeComponent();
        var timer = new DispatcherTimer {Interval = TimeSpan.FromSeconds(10)};
        timer.Tick += delegate
        {
            timer.Stop();
            MessageBox.Show("Logoff trigger");
            timer.Start();
        };
        timer.Start();
        InputManager.Current.PostProcessInput += delegate(object s,  ProcessInputEventArgs r)
        {
            if (r.StagingItem.Input is MouseButtonEventArgs || r.StagingItem.Input is KeyEventArgs)
                timer.Interval = TimeSpan.FromSeconds(10);
        };
    }

Upvotes: 0

Hans Passant
Hans Passant

Reputation: 942348

A bit late, but I came up with this code, it restarts a timer on any input event:

  public partial class Window1 : Window {
    DispatcherTimer mIdle;
    private const long cIdleSeconds = 3;
    public Window1() {
      InitializeComponent();
      InputManager.Current.PreProcessInput += Idle_PreProcessInput;
      mIdle = new DispatcherTimer();
      mIdle.Interval = new TimeSpan(cIdleSeconds * 1000 * 10000);
      mIdle.IsEnabled = true;
      mIdle.Tick += Idle_Tick;
    }

    void Idle_Tick(object sender, EventArgs e) {
      this.Close();
    }

    void Idle_PreProcessInput(object sender, PreProcessInputEventArgs e) {
      mIdle.IsEnabled = false;
      mIdle.IsEnabled = true;
    }
  }

Upvotes: 15

jmservera
jmservera

Reputation: 6682

There was a discussion in msdn social about this matter. Check it and please post what did work for you....

I paste you the code from the discussion (the one I think it will do what you need):

public partial class Window1 : Window
{
    private EventHandler handler;
    public Window1()
    {
        InitializeComponent();

        handler = delegate
        {
            DispatcherTimer timer = new DispatcherTimer();
            timer.Interval = TimeSpan.FromSeconds(4);
            timer.Tick += delegate
            {
                if (timer != null)
                {
                    timer.Stop();
                    timer = null;
                    System.Windows.Interop.ComponentDispatcher.ThreadIdle -= handler;
                    MessageBox.Show("You get caught!");
                    System.Windows.Interop.ComponentDispatcher.ThreadIdle += handler;
                }

            };

            timer.Start();

            //System.Windows.Interop.ComponentDispatcher.ThreadIdle -= handler;
            Dispatcher.CurrentDispatcher.Hooks.OperationPosted += delegate
            {
                if (timer != null)
                {
                    timer.Stop();
                    timer = null;
                }
            };
        };

        ComponentDispatcher.ThreadIdle += handler;
    }
}

Upvotes: 1

ChrisF
ChrisF

Reputation: 137188

You'll need to define "activity", but basically you want to start a timer. Then every time there is some "activity" (whether it's mouse clicks or mouse moves etc.) the timer is reset.

Then in the timer when it reaches your limit just post an event to call the application close method.

Upvotes: 1

Related Questions