System.Windows.Forms.ContextMenuStrip.Dispose C# (CSharp) Method

		protected override void Dispose (bool disposing)
		{
			base.Dispose (disposing);
		}

        //コンテキストメニュー表示
        public void ShowContextMenu(IPoderosaMenuGroup[] menus, ICommandTarget target, Point point_screen, ContextMenuFlags flags) {
            //まずソート
            ICollection sorted = PositionDesignationSorter.SortItems(menus);
            ContextMenuStrip cm = new ContextMenuStrip();
            MenuUtil.BuildContextMenu(cm, new ConvertingEnumerable<IPoderosaMenuGroup>(sorted), target);
            if (cm.Items.Count == 0) {
                cm.Dispose();
                return;
            }

            //キーボード操作をトリガにメニューを出すときは、選択があったほうが何かと操作しやすい。
            if ((flags & ContextMenuFlags.SelectFirstItem) != ContextMenuFlags.None)
                cm.Items[0].Select();

            // ContextMenuStrip is not disposed automatically and
            // its instance sits in memory till application end.
            // To release a document object related with some menu items,
            // we need to dispose ContextMenuStrip explicitly soon after it disappeared.
            cm.VisibleChanged += new EventHandler(ContextMenuStripVisibleChanged);

            try {
                cm.Show(this, this.PointToClient(point_screen));
            }
            catch (Exception ex) {
                RuntimeUtil.ReportException(ex);
            }
        }