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UI - 优设网 - 学设计上优设 (uisdc.com)https://www.uisdc.com/category/uiicon           TreeNode moveNode = (TreeNode)e.Data.GetData("System.Windows.Forms.TreeNode");
            Point pt;
            TreeNode targeNode;
            pt = ((TreeView)(sender)).PointToClient(new Point(e.X, e.Y));