じゃんけん GUIプログラミング - 嫌儲 IT 授業部 @Wiki

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();
        }

        Random random = new Random();

        private void DrawPaper()
        {
            Graphics paper = groupBox1.CreateGraphics();
            SolidBrush brush = new SolidBrush(Color.White);
            paper.FillRectangle(brush, 30, 30, 210, 170);
        }
        private void DrawScissors()
        {
            Graphics paper = groupBox1.CreateGraphics();
            Pen pen = new Pen(Color.Black, 4);
            paper.DrawLine(pen, 30, 30, 240, 200);
            paper.DrawLine(pen, 240, 30, 30, 200);
        }
        private void DrawRock()
        {
            Graphics paper = groupBox1.CreateGraphics();
            SolidBrush brush = new SolidBrush(Color.Red);
            paper.FillEllipse(brush, 30, 30, 210, 170);
        }

        private void DrawPaper2()
        {
            Graphics paper2 = groupBox2.CreateGraphics();
            SolidBrush brush2 = new SolidBrush(Color.White);
            paper2.FillRectangle(brush2, 30, 30, 210, 170);
        }
        private void DrawScissors2()
        {
            Graphics paper2 = groupBox2.CreateGraphics();
            Pen pen2 = new Pen(Color.Black, 4);
            paper2.DrawLine(pen2, 30, 30, 240, 200);
            paper2.DrawLine(pen2, 240, 30, 30, 200);
        }
        private void DrawRock2()
        {
            Graphics paper2 = groupBox2.CreateGraphics();
            SolidBrush brush2 = new SolidBrush(Color.Red);
            paper2.FillEllipse(brush2, 30, 30, 210, 170);
        }

        private void buttonPaper_Click(object sender, EventArgs e)
        {
            this.Refresh();

            DrawPaper();

            int num = random.Next(3);
            {
                if (num == 0)
                {
                    DrawRock2();
                    label1.Text = "You win!";
                }

                else if (num == 1)
                {
                    DrawScissors2();
                    label1.Text = "You lose!";
                }

                else
                {
                    DrawPaper2();
                    label1.Text = "Draw";
                }
            }
        }

        private void buttonScissors_Click(object sender, EventArgs e)
        {
            this.Refresh();

            DrawScissors();

            int num = random.Next(3);
            {
                if (num == 0)
                {
                    DrawPaper2();
                    label1.Text = "You win!";
                }

                else if (num == 1)
                {
                    DrawRock2();
                    label1.Text = "You lose!";
                }

                else
                {
                    DrawScissors2();
                    label1.Text = "Draw";
                }
            }
        }

        private void buttonRock_Click(object sender, EventArgs e)
        {
            this.Refresh();

            DrawRock();

            int num = random.Next(3);
            {
                if (num == 0)
                {
                    DrawScissors2();
                    label1.Text = "You win!";
                }

                else if (num == 1)
                {
                    DrawPaper2();
                    label1.Text = "You lose!";
                }

                else
                {
                    DrawRock2();
                    label1.Text = "Draw";
                }
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.Close();
        }
    }
}