diff --git a/Source/OpenTK/Platform/Windows/API.cs b/Source/OpenTK/Platform/Windows/API.cs
index 920d081b..ed39f0f2 100644
--- a/Source/OpenTK/Platform/Windows/API.cs
+++ b/Source/OpenTK/Platform/Windows/API.cs
@@ -951,6 +951,12 @@ namespace OpenTK.Platform.Windows
         [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
         public static extern IntPtr SetFocus(IntPtr hwnd);
 
+        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
+        public static extern int ShowCursor(bool show);
+
+        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
+        public static extern bool ClipCursor(ref RECT rcClip);
+
         #region Async input
 
         #region GetCursorPos
diff --git a/Source/OpenTK/Platform/Windows/WinGLNative.cs b/Source/OpenTK/Platform/Windows/WinGLNative.cs
index 442e02f9..99c3efa3 100644
--- a/Source/OpenTK/Platform/Windows/WinGLNative.cs
+++ b/Source/OpenTK/Platform/Windows/WinGLNative.cs
@@ -843,7 +843,7 @@ namespace OpenTK.Platform.Windows
         public bool CursorVisible
         {
             get { return true; }
-            set { }
+            set { Functions.ShowCursor(value); }
         }
         
         #endregion