formpie.cs

来自「csharp课本的源代码」· CS 代码 · 共 51 行

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

namespace DrawPie
{
    public partial class FormPie : Form
    {
        public FormPie()
        {
            InitializeComponent();
        }

        private void FormPie_Paint(object sender, PaintEventArgs e)
        {
            //创建Graphics对象
            Graphics g = e.Graphics;
            // 创建一支红色的画笔
            Pen redPen = new Pen(Color.Red, 3);
            //用DrawPie方法绘制扇形轮廓
            g.DrawPie(redPen, 15, 30, 100, 100, 0.0f, 100.0f);
            // 创建一支蓝色的画笔
            Pen bluePen = new Pen(Color.Blue, 3);
            //用DrawPie方法绘制扇形轮廓
            // 指定矩形的结构
            Rectangle rect1 = new Rectangle(210, 30, 100, 100);
            //给定扇形起始角度
            float statrAngle = 0.0f;
            float sweepAngle = 100.0f;
            g.DrawPie(bluePen, rect1, statrAngle, sweepAngle);
            //创建一支红色的画刷
            SolidBrush redBrush = new SolidBrush(Color.Red);
            //用FillPie方法绘制扇形轮廓
            g.FillPie(redBrush, 15, 170, 100, 100, 0.0f, 100.0f);
            //创建一支蓝色的画刷
            SolidBrush blueBrush = new SolidBrush(Color.Blue);
            Rectangle rect2 = new Rectangle(210, 170, 100, 100);
            g.FillPie(blueBrush, rect2, statrAngle, sweepAngle);
            bluePen.Dispose();
            redPen.Dispose();
            blueBrush.Dispose();
            redBrush.Dispose();
            g.Dispose();

        }
    }
}