fix & removed starting highlighting in another thread

Author: ilya-murzinov

src/TestStack.White/UIItems/UIItem.cs

@@ -431,15 +431,12 @@ public virtual void RaiseClickEvent()
         /// </summary>
         public virtual void DrawHighlight()
         {
-            new Thread(() =>
-                {
-                    Rect rectangle = this.AutomationElement.Current.BoundingRectangle;
+            Rect rectangle = AutomationElement.Current.BoundingRectangle;
 
-                    if (rectangle != Rect.Empty)
-                    {
-                        new Drawing.FrameRectangle(rectangle).Highlight();
-                    }
-                }).Start();
+            if (rectangle != Rect.Empty)
+            {
+                new Drawing.FrameRectangle(rectangle).Highlight();
+            }
         }
     }
 }

src/TestStack.White/WindowsAPI/NativeWindow.cs

@@ -96,13 +96,11 @@ public virtual void PostCloseMessage()
 
         [DllImport("user32.dll", CharSet = CharSet.Auto)]
         internal static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);
+
         [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)]
         internal static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
 
         [DllImport("user32.dll", CharSet = CharSet.Auto)]
         internal static extern int GetWindowLong(IntPtr hWnd, int nIndex);
-
-        [DllImport("user32.dll", CharSet = CharSet.Auto)]
-        internal static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);
     }
 }