using System;
using System.Drawing;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Shown(object sender, EventArgs e)
        {
            contextMenuStrip1.KeyDown += new KeyEventHandler(contextMenuStrip1_KeyDown);
            contextMenuStrip1.Closed += new ToolStripDropDownClosedEventHandler(contextMenuStrip1_Closed);

            ContextMenuStrip cms = new ContextMenuStrip();

            ToolStripItem item1 = new ToolStripMenuItem();
            item1.Text = "テスト1";
            cms.Items.Add(item1);
            contextMenuStrip1 = cms;
            contextMenuStrip1.Show(new Point(0, 0));
        }

        void contextMenuStrip1_Closed(object sender, ToolStripDropDownClosedEventArgs e)
        {
            MessageBox.Show("メニューが閉じられました");
        }

        void contextMenuStrip1_KeyDown(object sender, KeyEventArgs e)
        {
            MessageBox.Show("キーが押されました");
        }

    }
}