private void miOpenNodeInNew_Click(object sender, System.EventArgs e)
        {
            if (treeView1.SelectedNode == null)
            {
                return;
            }

            Sprite sp = SpriteFromNode(treeView1.SelectedNode);

            SceneGraphViewer scgrvw = new SceneGraphViewer();

            scgrvw.MdiParent = this.MdiParent;
            scgrvw.SetRootSprite(sp);
            scgrvw.Show();
        }
        private void miOpenNodeInNew_Click(object sender, System.EventArgs e)
        {
            if (treeView1.SelectedNode == null)
                return;

            Sprite sp = SpriteFromNode(treeView1.SelectedNode);

            SceneGraphViewer scgrvw = new SceneGraphViewer();
            scgrvw.MdiParent = this.MdiParent;
            scgrvw.SetRootSprite(sp);
            scgrvw.Show();
        }