Trying to replace the Gripper (which is a Label/Control) with adorners (custom code). This should prevent the slow cleanup, reduce resources and speedup the editor. Also we should have better "UI" feedback. This is still very experimental.

Greenshot/Drawing/Positions.cs

@@ -0,0 +1,38 @@
+/*
+ * Greenshot - a free and open source screenshot tool
+ * Copyright (C) 2007-2015 Thomas Braun, Jens Klingen, Robin Krom
+ * 
+ * For more information see: http://getgreenshot.org/
+ * The Greenshot project is hosted on Sourceforge: http://sourceforge.net/projects/greenshot/
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 1 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace Greenshot.Drawing
+{
+	/// <summary>
+	/// Position 
+	/// </summary>
+	public enum Positions : int
+	{
+		TopLeft = 0,
+		TopCenter = 1,
+		TopRight = 2,
+		MiddleRight = 3,
+		BottomRight = 4,
+		BottomCenter = 5,
+		BottomLeft = 6,
+		MiddleLeft = 7
+	}
+}