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

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

        private void Form1_Load(object sender, EventArgs e)
        {
            IsMdiContainer = true;
        }

        private void menu1ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Form2 frm2 = new Form2();
            frm2.Show();
            frm2.MdiParent = this;
        }

        private void menu2ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Form3 frm3 = new Form3();
            frm3.Show();
            frm3.MdiParent = this;
        }
    }
}