网站优化公司排行/今日热点新闻10条

就是算坐标要仔细，要不然，就不知道图画到哪里去了。。。

还好，我几何学得不太差。。将六个图合到一个大图，算得出来。。。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Drawing.Drawing2D;

namespace WindowsFormsApplication3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Graphics ghs = this.CreateGraphics();
            Brush mybs = new SolidBrush(Color.Red);
            Rectangle rt = new Rectangle(12, 40, 100, 100);
            ghs.FillRectangle(mybs, rt);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Graphics ghs = this.CreateGraphics();
            for (int i = 1; i < 6; i++)
            {
                HatchStyle hs = (HatchStyle)(5 + i);
                HatchBrush hb = new HatchBrush(hs, Color.Blue);
                Rectangle rtl = new Rectangle(175, 30 * i, 30 * i, 50);
                ghs.FillRectangle(hb, rtl);
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            Point p1 = new Point(300, 30);
            Point p2 = new Point(350, 50);
            LinearGradientBrush lgb = new LinearGradientBrush(p1, p2, Color.Brown, Color.Cyan);
            Graphics ghs = this.CreateGraphics();
            lgb.WrapMode = WrapMode.TileFlipX;
            ghs.FillRectangle(lgb, 320, 50, 100, 100);
        }

        private void button4_Click(object sender, EventArgs e)
        {
            Pen blackPen = new Pen(Color.Black, 3);
            Point point1 = new Point(12, 300);
            Point point2 = new Point(100, 300);
            Graphics g = this.CreateGraphics();
            g.DrawLine(blackPen, point1, point2);
        }

        private void button5_Click(object sender, EventArgs e)
        {
            Graphics graphics = this.CreateGraphics();
            Pen myPen = new Pen(Color.Black, 3);
            Point point1 = new Point(220, 270);
            Point point2 = new Point(220, 350);
            graphics.DrawLine(myPen, point1, point2);
        }

        private void button6_Click(object sender, EventArgs e)
        {
            Graphics ghs = this.CreateGraphics();
            Pen myPen = new Pen(Color.Orange, 3);
            ghs.DrawPie(myPen,300,300,120,100, 210,120);
        }
    }
}