private void richTextBox1_MouseClick(object sender, MouseEventArgs e)
        {
           
                ToolStripMenuItem[] formMenuItemList = new ToolStripMenuItem[2];

                formMenuItemList[0] = new ToolStripMenuItem("复制", null, new EventHandler(复制ToolStripMenuItem_Click(sender, e) ));//
                //formMenuItemList[1] = new ToolStripMenuItem("粘贴", null, new EventHandler(pictureBox1.Paste(); ));
                //ContextMenuStrip：表示快速鍵功能表
               ContextMenuStrip formMenu = new ContextMenuStrip();   
                formMenu.Items.AddRange(formMenuItemList);
                this.ContextMenuStrip = formMenu;
     
        }
复制ToolStripMenuItem_Click(sender, e)这个函数不知道怎么写。还有怎么判定是单击右键的。希望能详细说明。谢谢

if(e.Button==MouseButtons.Right)
{
}
的button不行吧，我是在richTextBox里面想做一个弹出式菜单。这不是按钮

我这样试过了

本人愚钝，请大神指点下~~

谢谢你啦。我搞好了