自己重写右键菜单

在程序中我们会用到文本框，如果要让右键菜单按照我们的要求显示，可以用如下方法实现，自己定义Item控件来显示。

private const int WMS= 0x007B; protected override void WndProc(ref Message m) { if (m.Msg == WMS) { try { ContextMenu contextMenu = new ContextMenu(); MenuItem clearUndo = new MenuItem(); clearUndo.Text = "撤销(&U)"; clearUndo.Click += new System.EventHandler(this.clearUndo_Click); contextMenu.MenuItems.Add(clearUndo); this.ContextMenu = contextMenu; contextMenu.Tag = this; this.ContextMenu = contextMenu; Point point = new Point(MousePosition.X, MousePosition.Y); ContextMenu.Show(this, point); } catch (System.Exception ex) { } } if (m.Msg == WMS) { return; } base.WndProc(ref m); } private void clearUndo_Click(object sender, System.EventArgs e) { this.Undo(); }