diff --git a/BizHawk.Client.EmuHawk/config/InputWidget.cs b/BizHawk.Client.EmuHawk/config/InputWidget.cs
index f6192af2c2d..b0fcb954643 100644
--- a/BizHawk.Client.EmuHawk/config/InputWidget.cs
+++ b/BizHawk.Client.EmuHawk/config/InputWidget.cs
@@ -1,23 +1,21 @@
 using System;
 using System.Drawing;
 using System.Linq;
-using System.Collections.Generic;
 using System.Windows.Forms;
 using System.Runtime.InteropServices;
-using System.Text;
 
 namespace BizHawk.Client.EmuHawk
 {
-	public class InputWidget : TextBox
+	public sealed class InputWidget : TextBox
 	{
 		//TODO: when binding, make sure that the new key combo is not in one of the other bindings
 
-		private int MaxBind = 4; //Max number of bindings allowed
-		private int pos = 0;	 //Which mapping the widget will listen for
-		private Timer timer = new Timer();
-		private string[] _bindings = new string[4];
-		private string wasPressed = String.Empty;
-		private ToolTip tooltip1 = new ToolTip();
+		private readonly int _maxBind = 4; //Max number of bindings allowed
+		private int _pos;	 //Which mapping the widget will listen for
+		private readonly Timer _timer = new Timer();
+		private readonly string[] _bindings = new string[4];
+		private string _wasPressed = String.Empty;
+		private readonly ToolTip _tooltip1 = new ToolTip();
 
 		public bool AutoTab = true;
 		public string WidgetName;
@@ -27,32 +25,32 @@ public class InputWidget : TextBox
 
 		public InputWidget()
 		{
-			this.ContextMenu = new ContextMenu();
-			this.timer.Tick += new System.EventHandler(this.Timer_Tick);
+			ContextMenu = new ContextMenu();
+			_timer.Tick += Timer_Tick;
 			ClearBindings();
-			tooltip1.AutoPopDelay = 2000;
+			_tooltip1.AutoPopDelay = 2000;
 		}
 
 		public InputWidget(int maxBindings, bool autotab)
 		{
-			this.AutoTab = autotab;
-			this.ContextMenu = new ContextMenu();
-			this.timer.Tick += new System.EventHandler(this.Timer_Tick);
-			MaxBind = maxBindings;
-			_bindings = new string[MaxBind];
+			AutoTab = autotab;
+			ContextMenu = new ContextMenu();
+			_timer.Tick += Timer_Tick;
+			_maxBind = maxBindings;
+			_bindings = new string[_maxBind];
 			ClearBindings();
-			tooltip1.AutoPopDelay = 2000;
+			_tooltip1.AutoPopDelay = 2000;
 		}
 
 		protected override void OnMouseClick(MouseEventArgs e)
 		{
-			HideCaret(this.Handle);
+			HideCaret(Handle);
 			base.OnMouseClick(e);
 		}
 
 		private void ClearBindings()
 		{
-			for (int i = 0; i < MaxBind; i++)
+			for (int i = 0; i < _maxBind; i++)
 			{
 				_bindings[i] = String.Empty;
 			}
@@ -60,18 +58,18 @@ private void ClearBindings()
 
 		protected override void OnEnter(EventArgs e)
 		{
-			pos = 0;
-			timer.Start();
+			_pos = 0;
+			_timer.Start();
 
-			wasPressed = Input.Instance.GetNextBindEvent();
+			_wasPressed = Input.Instance.GetNextBindEvent();
 			BackColor = Color.LightCyan;
 		}
 
 		protected override void OnLeave(EventArgs e)
 		{
-			timer.Stop();
+			_timer.Stop();
 			UpdateLabel();
-			BackColor = SystemColors.Control;
+			BackColor = SystemColors.Window;
 			base.OnLeave(e);
 
 		}
@@ -90,8 +88,8 @@ public void EraseMappings()
 		private void ReadKeys()
 		{
 			Input.Instance.Update();
-			string TempBindingStr = Input.Instance.GetNextBindEvent();
-			if (!String.IsNullOrEmpty(wasPressed) && TempBindingStr == wasPressed)
+			var TempBindingStr = Input.Instance.GetNextBindEvent();
+			if (!String.IsNullOrEmpty(_wasPressed) && TempBindingStr == _wasPressed)
 			{
 				return;
 			}
@@ -110,9 +108,9 @@ private void ReadKeys()
 
 				if (!IsDuplicate(TempBindingStr))
 				{
-					_bindings[pos] = TempBindingStr;
+					_bindings[_pos] = TempBindingStr;
 				}
-				wasPressed = TempBindingStr;
+				_wasPressed = TempBindingStr;
 
 				UpdateLabel();
 				Increment();
@@ -131,7 +129,7 @@ protected override void OnKeyUp(KeyEventArgs e)
 				base.OnKeyUp(e);
 			}
 
-			wasPressed = String.Empty;
+			_wasPressed = String.Empty;
 		}
 
 		protected override void OnKeyDown(KeyEventArgs e)
@@ -150,17 +148,17 @@ public void Increment()
 		{
 			if (AutoTab)
 			{
-				this.Parent.SelectNextControl(this, true, true, true, true);
+				Parent.SelectNextControl(this, true, true, true, true);
 			}
 			else
 			{
-				if (pos < MaxBind)
+				if (_pos < _maxBind)
 				{
-					pos++;
+					_pos++;
 				}
 				else
 				{
-					pos = 0;
+					_pos = 0;
 				}
 			}
 		}
@@ -169,17 +167,17 @@ public void Decrement()
 		{
 			if (AutoTab)
 			{
-				this.Parent.SelectNextControl(this, false, true, true, true);
+				Parent.SelectNextControl(this, false, true, true, true);
 			}
 			else
 			{
-				if (pos == 0)
+				if (_pos == 0)
 				{
-					pos = MaxBind - 1;
+					_pos = _maxBind - 1;
 				}
 				else
 				{
-					pos--;
+					_pos--;
 				}
 			}
 		}
@@ -197,26 +195,15 @@ public string Bindings
 			}
 			set
 			{
-				Text = String.Empty;
 				ClearBindings();
-				string str = value.Trim();
-				int x;
-				for (int i = 0; i < MaxBind; i++)
+				var newBindings = value.Trim().Split(',');
+				for (int i = 0; i < _maxBind; i++)
 				{
-					str = str.Trim();
-					x = str.IndexOf(',');
-					if (x < 0)
+					if (i < newBindings.Length)
 					{
-						_bindings[i] = str;
-						str = String.Empty;
-					}
-					else
-					{
-						_bindings[i] = str.Substring(0, x);
-						str = str.Substring(x + 1, str.Length - x - 1);
+						_bindings[i] = newBindings[i];
 					}
 				}
-
 				UpdateLabel();
 			}
 		}
@@ -232,13 +219,9 @@ protected override void WndProc(ref Message m)
 			{
 				case 0x0201: //WM_LBUTTONDOWN
 					{
-						this.Focus();
+						Focus();
 						return;
 					}
-				//case 0x0202://WM_LBUTTONUP
-				//{
-				//	return;
-				//}
 				case 0x0203://WM_LBUTTONDBLCLK
 					{
 						return;
@@ -275,20 +258,12 @@ protected override void OnMouseWheel(MouseEventArgs e)
 
 		protected override void OnGotFocus(EventArgs e)
 		{
-			HideCaret(this.Handle);
-		}
-
-		protected override void OnLostFocus(EventArgs e)
-		{
-			base.OnLostFocus(e);
+			HideCaret(Handle);
 		}
 
 		protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
 		{
-			if (keyData.ToString() == "F4" || keyData.ToString().Contains("Alt"))
-				return false;
-			else
-				return true;
+			return !(keyData.ToString() == "F4" || keyData.ToString().Contains("Alt"));
 		}
 	}
 }
\ No newline at end of file