/// <summary> /// 在将对象拖入控件的边界时发生。 /// </summary> private void treeView_DragEnter(object sender, DragEventArgs e) { DragHelper.ImageList_DragEnter(this.tempTreeView.Handle, e.X - this.tempTreeView.Left, e.Y - this.tempTreeView.Top); this.timer.Enabled = true; }