using System;
using System.Drawing;
using System.Windows.Forms;
class AutoScaleDemo: Form
{
public static void Main()
{
Application.Run(new AutoScaleDemo());
}
public AutoScaleDemo()
{
Font = new Font(“Arial”, 12);
FormBorderStyle = FormBorderStyle.FixedSingle;
int[] aiPointSize = { 8, 12, 16, 24, 32 };
for (int i = 0; i < aiPointSize.Length; i++) { Button btn = new Button(); btn.Parent = this; btn.Text = "Use " + aiPointSize[i] + "-point font"; btn.Tag = aiPointSize[i]; btn.Location = new Point(4, 16 + 24 * i); btn.Size = new Size(80, 16); btn.Click += new EventHandler(ButtonOnClick); } ClientSize = new Size(88, 16 + 24 * aiPointSize.Length); AutoScaleBaseSize = new Size(4, 8); } protected override void OnPaint(PaintEventArgs pea) { pea.Graphics.DrawString(Text, Font, new SolidBrush(ForeColor), 0, 0); } void ButtonOnClick(object obj, EventArgs ea) { Button btn = (Button) obj; SizeF sizefOld = GetAutoScaleSize(Font); Font = new Font(Font.FontFamily, (int) btn.Tag); SizeF sizefNew = GetAutoScaleSize(Font); Scale(sizefNew.Width / sizefOld.Width,sizefNew.Height / sizefOld.Height); } } [/csharp]