C#设置页面单位和缩放的方法

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace advanced_drawing{  public partial class Form2 : Form  {    public Form2()    {      InitializeComponent();    }    private void button1_Click(object sender, EventArgs e)    {      Graphics g = this.CreateGraphics();      g.PageUnit = GraphicsUnit.Inch;      g.PageScale = 1;      Font rulerFont = new Font("MS Sams Serif", 8.25f);      Pen blackPen = new Pen(Color.Black, 0.05f);      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);    }  }}