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  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Data;
  5. using System.Drawing;
  6. using System.Linq;
  7. using System.Text;
  8. using System.Windows.Forms;
  9.  
  10. namespace WindowsFormsApplication1
  11. {
  12.     public partial class Form1 : Form
  13.     {
  14.         public Form1()
  15.         {
  16.             InitializeComponent();
  17.             this.Load += new EventHandler(Form1_Load);
  18.         }
  19.         Panel panel1;
  20.         TreeView treeView1;
  21.         Button button1;
  22.         void Form1_Load(object sender, EventArgs e)
  23.         {
  24.             treeView1 = new TreeView();
  25.             treeView1.Name = "treeView1";
  26.             treeView1.Dock = DockStyle.Fill;
  27.             this.Controls.Add(treeView1);
  28.  
  29.             panel1 = new Panel();
  30.             panel1.Name = "panel1";
  31.             panel1.Dock = DockStyle.Bottom;
  32.             panel1.Height = 26;
  33.             this.Controls.Add(panel1);
  34.  
  35.             button1 = new Button();
  36.             button1.Name = "button1";
  37.             button1.Text = "button1";
  38.             panel1.Controls.Add(button1);
  39.             this.Set();
  40.             this.SizeChanged += new EventHandler(Form1_SizeChanged);
  41.         }
  42.  
  43.         void Set()
  44.         {
  45.             int bw = button1.Width / 2;
  46.             int bh = button1.Height /2;
  47.             int pw = panel1.ClientSize.Width / 2;
  48.             int ph = panel1.ClientSize.Height /2;
  49.             button1.Location = new Point(pw - bw, ph - bh);
  50.         }
  51.  
  52.         void Form1_SizeChanged(object sender, EventArgs e)
  53.         {
  54.             this.Set();
  55.         }
  56.     }
  57. }
  58.  
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https://ideone.com/9ntL5
language:
C# (gmcs 5.20.1)
created:
12 years ago
visibility:
public

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