c# 투명도, 창크기 변경 응용

영상 녹화 프로그램 만들고 싶어서 궁금해서 찾아봄

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
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void Form1_Load(object sender, EventArgs e)
        {
 
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            for (int i = 1; i <= 300; i+=3)
            {
                this.Width += 1;
                this.pictureBox1.Width += 1;
                this.hScrollBar1.Width += 1;
                this.Refresh();
            }
            this.button1.Visible = false;
            this.button2.Visible = true;
           
        }
 
        private void button2_Click(object sender, EventArgs e)
        {
            for (int i = 1; i <= 300; i+=3)
            {
                this.Width -= 1;
                this.pictureBox1.Width -= 1;
                this.hScrollBar1.Width -= 1;
                this.Refresh();
            }
            this.button1.Visible = true;
            this.button2.Visible = false;
        }
 
        private void hScrollBar1_Scroll(object sender, ScrollEventArgs e)
        {
            this.Opacity = this.hScrollBar1.Value/1000.0;
        }
    }
}