using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        int x = 0;

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            //ダブルバッファリング
            this.SetStyle(ControlStyles.DoubleBuffer, true);
            this.SetStyle(ControlStyles.UserPaint, true);
            this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
        }

        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);

            //四角形描画
            e.Graphics.FillRectangle(Brushes.Red, x, 50, 100, 100);

        }

        private void Form1_Shown(object sender, EventArgs e)
        {
            //ゲームループ
            System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();
            sw.Start();
            double nextframe = (double)sw.ElapsedMilliseconds;
            float wait = 1000f / 60f;
            while (this.Created)
            {

                if ((double)sw.ElapsedMilliseconds >= nextframe)
                {

                    //計算処理
                    x++;

                    if ((double)sw.ElapsedMilliseconds < nextframe + wait)
                    {
                        //描画処理
                        this.Invalidate();
                    }

                    nextframe += wait;
                }

                Application.DoEvents();
            }
        }
    }
}