using System; using System.Windows.Forms; using System.Drawing; namespace RedSquareInYellowCircle { static class Program { [STAThread] static void Main () { Application.EnableVisualStyles (); Application.SetCompatibleTextRenderingDefault (false); Application.Run (new Form1 (); } } public class Form1: Form { private System.ComponentModel.IContainer components=null; protected override void Dispose (bool disposing) { if (disposing & &components! =null) { components.Dispose (); } base.Dispose (disposing); } public Form1 () { InitializeComponent (); } private void InitializeComponent () { this.SuspendLayout (); // // Form1 // this.AutoScaleDimensions=new System.Drawing.SizeF (6F, 13F); this.Name="Form1"; this.Paint+=new System.Windows.Forms.PaintEventHandler (this.Form1_Paint); this.ResumeLayout (false); } private void Form1_Paint (object sender, PaintEventArgs e) { const int radius=100; float a=(float) Math.Sqrt (2)*radius; int[] center={ this.ClientRectangle.Width / 2, this.ClientRectangle.Height / 2 }; Pen pen=new Pen (Color.Black, 0); SolidBrush sbYellow=new SolidBrush (Color.Yellow); SolidBrush sbRed=new SolidBrush (Color.Red); e.Graphics.FillEllipse (sbYellow, new Rectangle (center[0] — radius, center[1] — radius, 2*radius, 2*radius); e.Graphics.FillRectangle (sbRed, new Rectangle (center[0] — (int) a / 2, center[1] — (int) a / 2, (int) a, (int) a); // Освободить объекты GDI+pen.Dispose (); sbYellow.Dispose (); sbRed.Dispose (); } }} сделанно в 2010 студии, если вдруг проблемы с компиляцией
