using System;
using System.Drawing;
using System.Windows.Forms;
class MyClass: Form
{
[STAThread]
public static void Main()
{
Application.Run(new MyClass());
}
public MyClass()
{
int fontHeight = Font.Height;
ClientSize = new Size(fontHeight * 30, fontHeight * 10);
Button btn = new Button();
btn.Parent = this;
btn.Text = "Button";
btn.Size = new Size(17 * fontHeight / 2, 7 * fontHeight / 4);
btn.Location = new Point((ClientSize.Width - btn.Width) / 2,
(ClientSize.Height - btn.Height) / 2);
}
}