diff --git a/DarkUI/Docking/DarkDockRegion.cs b/DarkUI/Docking/DarkDockRegion.cs
index ebbb10b..f65ebc6 100644
--- a/DarkUI/Docking/DarkDockRegion.cs
+++ b/DarkUI/Docking/DarkDockRegion.cs
@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.ComponentModel;
 using System.Drawing;
 using System.Windows.Forms;
@@ -169,13 +170,13 @@ namespace DarkUI
             switch (DockArea)
             {
                 case DarkDockArea.Left:
-                    _splitter = new DarkDockSplitter(this, DarkSplitterType.Right);
+                    _splitter = new DarkDockSplitter(DockPanel, this, DarkSplitterType.Right);
                     break;
                 case DarkDockArea.Right:
-                    _splitter = new DarkDockSplitter(this, DarkSplitterType.Left);
+                    _splitter = new DarkDockSplitter(DockPanel, this, DarkSplitterType.Left);
                     break;
                 case DarkDockArea.Bottom:
-                    _splitter = new DarkDockSplitter(this, DarkSplitterType.Top);
+                    _splitter = new DarkDockSplitter(DockPanel, this, DarkSplitterType.Top);
                     break;
                 default:
                     return;
@@ -193,7 +194,7 @@ namespace DarkUI
             base.OnLayout(e);
 
             if (_splitter != null)
-                _splitter.UpdateBounds(DockPanel);
+                _splitter.UpdateBounds();
         }
 
         #endregion
diff --git a/DarkUI/Docking/Items/DarkDockSplitter.cs b/DarkUI/Docking/Items/DarkDockSplitter.cs
index 3d44b66..472a460 100644
--- a/DarkUI/Docking/Items/DarkDockSplitter.cs
+++ b/DarkUI/Docking/Items/DarkDockSplitter.cs
@@ -1,4 +1,5 @@
-using System.Drawing;
+using System;
+using System.Drawing;
 using System.Windows.Forms;
 
 namespace DarkUI
@@ -7,6 +8,7 @@ namespace DarkUI
     {
         #region Field Region
 
+        private Control _parentControl;
         private Control _control;
         private DarkSplitterType _splitterType;
         private DarkTranslucentForm _overlayForm;
@@ -23,8 +25,9 @@ namespace DarkUI
 
         #region Constructor Region
 
-        public DarkDockSplitter(Control control, DarkSplitterType splitterType)
+        public DarkDockSplitter(Control parentControl, Control control, DarkSplitterType splitterType)
         {
+            _parentControl = parentControl;
             _control = control;
             _splitterType = splitterType;
             _overlayForm = new DarkTranslucentForm(Color.Black);
@@ -91,23 +94,22 @@ namespace DarkUI
                     _control.Width += difference.X;
                     break;
                 case DarkSplitterType.Right:
-                    _control.Width += difference.X;
+                    _control.Width -= difference.X;
                     break;
                 case DarkSplitterType.Top:
-                    _control.Height -= difference.Y;
+                    _control.Height += difference.Y;
                     break;
                 case DarkSplitterType.Bottom:
                     _control.Height -= difference.Y;
                     break;
             }
+
+            UpdateBounds();
         }
 
-        public void UpdateBounds(Control rootControl)
+        public void UpdateBounds()
         {
-            if (rootControl == null)
-                rootControl = _control;
-
-            var bounds = rootControl.RectangleToScreen(_control.Bounds);
+            var bounds = _parentControl.RectangleToScreen(_control.Bounds);
 
             switch (_splitterType)
             {
diff --git a/DarkUI/Win32/DarkDockResizeFilter.cs b/DarkUI/Win32/DarkDockResizeFilter.cs
index 4c22090..f5f6760 100644
--- a/DarkUI/Win32/DarkDockResizeFilter.cs
+++ b/DarkUI/Win32/DarkDockResizeFilter.cs
@@ -40,6 +40,16 @@ namespace DarkUI
                   m.Msg == (int)WM.RBUTTONDOWN || m.Msg == (int)WM.RBUTTONUP || m.Msg == (int)WM.RBUTTONDBLCLK))
                 return false;
 
+            // Stop drag.
+            if (m.Msg == (int)WM.LBUTTONUP)
+            {
+                if (_isDragging)
+                {
+                    StopDrag();
+                    return true;
+                }
+            }
+
             // Exit out early if we're simply releasing a non-splitter drag over the area
             if (m.Msg == (int)WM.LBUTTONUP && !_isDragging)
                 return false;
@@ -77,16 +87,6 @@ namespace DarkUI
                 }
             }
 
-            // Stop drag.
-            if (m.Msg == (int)WM.LBUTTONUP)
-            {
-                if (_isDragging)
-                {
-                    StopDrag();
-                    return true;
-                }
-            }
-
             // Stop events passing through if we're hovering over a splitter
             if (HotSplitter() != null)
                 return true;
@@ -104,17 +104,6 @@ namespace DarkUI
 
         private void DragTimer_Tick(object sender, EventArgs e)
         {
-            if (_dockPanel.MouseButtonState != MouseButtons.Left)
-                _isDragging = false;
-
-            if (!_isDragging)
-            {
-                _activeSplitter.HideOverlay();
-                _dragTimer.Stop();
-                ResetCursor();
-                return;
-            }
-
             var difference = new Point(_initialContact.X - Cursor.Position.X, _initialContact.Y - Cursor.Position.Y);
             _activeSplitter.UpdateOverlay(difference);
         }