Modified GetState() to return the combined state for all mouse/keyboard devices.

Source/OpenTK/Input/KeyboardState.cs

@@ -208,6 +208,19 @@ namespace OpenTK.Input
             }
         }
 
+        internal void MergeBits(KeyboardState other)
+        {
+            unsafe
+            {
+                int* k2 = other.Keys;
+                fixed (int* k1 = Keys)
+                {
+                    for (int i = 0; i < NumInts; i++)
+                        *(k1 + i) |= *(k2 + i);
+                }
+            }
+        }
+
         #endregion
 
         #region Private Members

Source/OpenTK/Input/MouseState.cs

@@ -300,6 +300,23 @@ namespace OpenTK.Input
             }
         }
 
+        internal void MergeBits(MouseState other)
+        {
+            unsafe
+            {
+                int* b2 = other.Buttons;
+                fixed (int* b1 = Buttons)
+                {
+                    for (int i = 0; i < NumInts; i++)
+                        *(b1 + i) |= *(b2 + i);
+                }
+
+                WheelPrecise += other.WheelPrecise;
+                X += other.X;
+                Y += other.Y;
+            }
+        }
+
         #endregion
 
         #region Private Members

Source/OpenTK/Platform/Windows/WinRawKeyboard.cs

@@ -68,7 +68,7 @@ namespace OpenTK.Platform.Windows
 
         #endregion
 
-        #region internal static void UpdateKeyboardList()
+        #region UpdateKeyboardList
 
         internal void UpdateKeyboardList()
         {
@@ -264,10 +264,12 @@ namespace OpenTK.Platform.Windows
 
         public KeyboardState GetState()
         {
-            if (keyboards.Count > 0)
+            KeyboardState master = new KeyboardState();
-                return keyboards[0];
+            foreach (KeyboardState ks in keyboards)
-            else
+            {
-                return new KeyboardState();
+                master.MergeBits(ks);
+            }
+            return master;
         }
 
         public KeyboardState GetState(int index)

Source/OpenTK/Platform/Windows/WinRawMouse.cs

@@ -65,10 +65,12 @@ namespace OpenTK.Platform.Windows
 
         public MouseState GetState()
         {
-            if (mice.Count > 0)
+            MouseState master = new MouseState();
-                return mice[0];
+            foreach (MouseState ms in mice)
-            else
+            {
-                return new MouseState();
+                master.MergeBits(ms);
+            }
+            return master;
         }
 
         public MouseState GetState(int index)

Source/OpenTK/Platform/X11/XI2Mouse.cs

@@ -104,10 +104,12 @@ namespace OpenTK.Platform.X11
         public MouseState GetState()
         {
             ProcessEvents();
-            if (mice.Count > 0)
+            MouseState master = new MouseState();
-                return mice[0];
+            foreach (MouseState ms in mice)
-            else
+            {
-                return new MouseState();
+                master.MergeBits(ms);
+            }
+            return master;
         }
 
         public MouseState GetState(int index)