Update DisplayRectangle

Author: LeafShi1

src/System.Windows.Forms/System/Windows/Forms/Controls/ToolStrips/StatusStrip.cs

@@ -317,28 +317,44 @@ public override Rectangle DisplayRectangle
     {
         get
         {
-            Rectangle rectangle = base.DisplayRectangle;
+            Rectangle rect = base.DisplayRectangle;
 
             if (!SizingGrip)
             {
-                return rectangle;
+                return rect;
             }
 
             Rectangle grip = SizeGripBounds;
-            int remainingWidth = rectangle.Width - grip.Width;
-            if (grip.IsEmpty || remainingWidth <= 0)
+
+            if (grip.IsEmpty)
             {
-                return rectangle;
+                return rect;
             }
 
-            if (RightToLeft == RightToLeft.Yes)
+            if (Dock is DockStyle.Bottom or DockStyle.Top or DockStyle.Fill)
             {
-                rectangle.X += grip.Width;
-            }
+                int remainingWidth = rect.Width - grip.Width;
+                if (remainingWidth > 0)
+                {
+                    if (RightToLeft == RightToLeft.Yes)
+                    {
+                        rect.X += grip.Width;
+                    }
 
-            rectangle.Width = remainingWidth;
+                    rect.Width = remainingWidth;
+                }
+            }
+            else if (Dock is DockStyle.Left or DockStyle.Right)
+            {
+                int remainingHeight = rect.Height - grip.Height;
+                if (remainingHeight > 0)
+                {
+                    rect.Y += grip.Height;
+                    rect.Height = remainingHeight;
+                }
+            }
 
-            return rectangle;
+            return rect;
         }
     }
 

src/System.Windows.Forms/System/Windows/Forms/Controls/ToolStrips/ToolStrip.cs

@@ -728,6 +728,11 @@ public override Rectangle DisplayRectangle
         {
             Rectangle rect = base.DisplayRectangle;
 
+            if (this is StatusStrip)
+            {
+                return rect;
+            }
+
             if ((LayoutEngine is ToolStripSplitStackLayout) && (GripStyle == ToolStripGripStyle.Visible))
             {
                 if (Orientation == Orientation.Horizontal)
@@ -3940,7 +3945,7 @@ internal override void ReleaseUiaProvider(HWND handle)
     /// <param name="items">contains ToolStrip or ToolStripDropDown items to disconnect</param>
     internal virtual void ReleaseToolStripItemsProviders(ToolStripItemCollection items)
     {
-        ToolStripItem[] itemsArray = [..items.Cast<ToolStripItem>()];
+        ToolStripItem[] itemsArray = [.. items.Cast<ToolStripItem>()];
         foreach (ToolStripItem toolStripItem in itemsArray)
         {
             if (toolStripItem is ToolStripDropDownItem dropDownItem && dropDownItem.DropDownItems.Count > 0)