[wpf] How do I get the current mouse screen coordinates in WPF?

How to get current mouse coordination on the screen? I know only Mouse.GetPosition() which get mousePosition of element, but I want to get the coordination without using element.

If you're looking for a 1 liner, this does well.

new Point(Mouse.GetPosition(mWindow).X + mWindow.Left, Mouse.GetPosition(mWindow).Y + mWindow.Top)

The + mWindow.Left and + mWindow.Top makes sure the position is in the right place even when the user drags the window around.

If you try a lot of these answers out on different resolutions, computers with multiple monitors, etc. you may find that they don't work reliably. This is because you need to use a transform to get the mouse position relative to the current screen, not the entire viewing area which consists of all your monitors. Something like this...(where "this" is a WPF window).

var transform = PresentationSource.FromVisual(this).CompositionTarget.TransformFromDevice;
var mouse = transform.Transform(GetMousePosition());

public System.Windows.Point GetMousePosition()
{
    var point = Forms.Control.MousePosition;
    return new Point(point.X, point.Y);
}

You may use combination of TimerDispatcher (WPF Timer analog) and Windows "Hooks" to catch cursor position from operational system.

    [DllImport("user32.dll")]
    [return: MarshalAs(UnmanagedType.Bool)]
    public static extern bool GetCursorPos(out POINT pPoint);

Point is a light struct. It contains only X, Y fields.

    public MainWindow()
    {
        InitializeComponent();

        DispatcherTimer dt = new System.Windows.Threading.DispatcherTimer();
        dt.Tick += new EventHandler(timer_tick);
        dt.Interval = new TimeSpan(0,0,0,0, 50);
        dt.Start();
    }

    private void timer_tick(object sender, EventArgs e)
    {
        POINT pnt;
        GetCursorPos(out pnt);
        current_x_box.Text = (pnt.X).ToString();
        current_y_box.Text = (pnt.Y).ToString();
    }

    public struct POINT
    {
        public int X;
        public int Y;

        public POINT(int x, int y)
        {
            this.X = x;
            this.Y = y;
        }
    }

This solution is also resolving the problem with too often or too infrequent parameter reading so you can adjust it by yourself. But remember about WPF method overload with one arg which is representing ticks not milliseconds.

TimeSpan(50); //ticks

This works without having to use forms or import any DLLs:

   using System.Windows;
   using System.Windows.Input;

    /// <summary>
    /// Gets the current mouse position on screen
    /// </summary>
    private Point GetMousePosition()
    {
        // Position of the mouse relative to the window
        var position = Mouse.GetPosition(Window);

        // Add the window position
        return new Point(position.X + Window.Left, position.Y + Window.Top);
    }

Mouse.GetPosition(mWindow) gives you the mouse position relative to the parameter of your choice. mWindow.PointToScreen() convert the position to a point relative to the screen.

So mWindow.PointToScreen(Mouse.GetPosition(mWindow)) gives you the mouse position relative to the screen, assuming that mWindow is a window(actually, any class derived from System.Windows.Media.Visual will have this function), if you are using this inside a WPF window class, this should work.

Do you want coordinates relative to the screen or the application?

If it's within the application just use:

Mouse.GetPosition(Application.Current.MainWindow);

If not, I believe you can add a reference to System.Windows.Forms and use:

System.Windows.Forms.Control.MousePosition;

Or in pure WPF use PointToScreen.

Sample helper method:

// Gets the absolute mouse position, relative to screen
Point GetMousePos() => _window.PointToScreen(Mouse.GetPosition(_window));