C#使用Matrix执行缩放的方法

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
namespace advanced_drawing
{
  public partial class Form4 : Form
  {
    public Form4()
    {
      InitializeComponent();
    }
    private void button1_Click(object sender, EventArgs e)
    {
      //使用转换将单位设置为英寸
      Graphics g=this.CreateGraphics();
      Matrix matrix = new Matrix();
      matrix.Scale(g.DpiX, g.DpiY);
      g.Transform = matrix;
      Font rulerFont = new Font("MS Sans Serif", 8.25f / g.DpiY);
      Pen blackPen=new Pen(Color.Black,0);
      float rulerFontHeight = rulerFont.GetHeight(g);
      RectangleF rulerRect = new RectangleF(0, 0, 6.5f, rulerFontHeight * 1.5f);
      g.DrawRectangle(blackPen, rulerRect.X, rulerRect.Y, rulerRect.Width, rulerRect.Height);
      Brush brush = System.Drawing.Brushes.Red;
      g.DrawString("zhuzhao", rulerFont, brush, rulerRect);
    }
  }
}