自动缩放AutoScaleDemo

来源：互联网发布：知乎公益中学的自白编辑：程序博客网时间：2024/05/22 13:13
Code:
using System;using System.Windows.Forms;using System.Drawing;namespace CsDev{    class AutoScaleDemo : Form    {        public static void Main()        {            Application.Run(new AutoScaleDemo());        }        public AutoScaleDemo()        {            Text = "自动缩放";            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(btn_Click);            }            ClientSize = new Size(88, 16 + 24 * aiPointSize.Length);            AutoScaleBaseSize = new Size(4, 8);//自动缩放的基大小        }        protected override void OnPaint(PaintEventArgs e)        {            e.Graphics.DrawString(Text, Font, new SolidBrush(ForeColor), 0, 0);            base.OnPaint(e);        }        void btn_Click(object obj, EventArgs e)        {            Button btn = (Button)obj;            SizeF sizefOld = GetAutoScaleSize(Font);            Font = new Font(Font.FontFamily, (int)btn.Tag);            SizeF sizefNew = GetAutoScaleSize(Font);            //缩放            Scale(new SizeF(sizefNew.Width / sizefOld.Width, sizefNew.Height / sizefOld.Height));        }    }}
效果图:
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