formellipse.cs

来自「csharp课本的源代码」· CS 代码 · 共 48 行

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

namespace DrawEllips
{
    public partial class FormEllipse : Form
    {
        public FormEllipse()
        {
            InitializeComponent();
        }

        private void FormEllipse_Paint(object sender, PaintEventArgs e)
        {
            //创建Graphics对象
            Graphics g = e.Graphics;
            // 创建一支红色的笔
            Pen redPen = new Pen(Color.Red, 3);
            //用DrawEllipse方法绘制椭圆轮廓
            g.DrawEllipse(redPen, 50, 65, 150, 100);
            // 创建一支黑色的笔
            Pen blackPen = new Pen(Color.Black, 3);
            // 指定矩形的结构
            Rectangle irect = new Rectangle(390, 65, 150, 100);
            //用DrawEllipse方法绘制椭圆轮廓
            g.DrawEllipse(blackPen, irect);
            //创建一支红色的画刷
            SolidBrush redBrush = new SolidBrush(Color.Red);
            g.FillEllipse(redBrush, 50, 280, 150, 100);
            //创建一支黑色的画刷
            SolidBrush blackBrush = new SolidBrush(Color.Black);
            Rectangle jrect = new Rectangle(390, 280, 150, 100);
            g.FillEllipse(blackBrush, jrect);
            blackPen.Dispose();
            redPen.Dispose();
            blackBrush.Dispose();
            redBrush.Dispose();
            g.Dispose();


        }
    }
}