51 lines
1.5 KiB
C#
51 lines
1.5 KiB
C#
using System;
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using System.Runtime.InteropServices;
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using System.Windows;
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using System.Windows.Media;
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namespace DTS.Common.Utils
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{
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public class MouseUtilities
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{
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[StructLayout(LayoutKind.Sequential)]
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private struct Win32Point
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{
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public int X;
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public int Y;
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};
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[DllImport("user32.dll")]
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private static extern bool GetCursorPos(ref Win32Point pt);
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[DllImport("user32.dll")]
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private static extern bool GetPhysicalCursorPos(ref Win32Point pt);
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[DllImport("user32.dll")]
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private static extern bool ScreenToClient(IntPtr hwnd, ref Win32Point pt);
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public static Point GetMousePosition(Visual relativeTo)
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{
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var mouse = new Win32Point();
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GetCursorPos(ref mouse);
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var presentationSource =
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(System.Windows.Interop.HwndSource)PresentationSource.FromVisual(relativeTo);
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var factor = 2D - presentationSource.CompositionTarget.TransformToDevice.M22;
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ScreenToClient(presentationSource.Handle, ref mouse);
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var transform = relativeTo.TransformToAncestor(presentationSource.RootVisual);
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var offset = transform.Transform(new Point(0, 0));
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if( factor > 0 )
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{
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offset.Y = offset.Y + offset.Y*(presentationSource.CompositionTarget.TransformToDevice.M22 - 1);
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}
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return new Point(mouse.X - offset.X, mouse.Y - offset.Y);
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}
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}
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}
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