using System;
using System.Drawing;
using System.Windows.Forms;
   
class FourByFours: Form
{
     public static void Main()
     {
          Application.Run(new FourByFours());
     }
     public FourByFours()
     {
          ResizeRedraw = true;
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
     }
     protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
     {
          Pen   pen   = new Pen(clr);
          Brush brush = new SolidBrush(clr);
   
          grfx.FillRectangle(brush, new Rectangle(2, 8, 4, 4));
     }
}

    

   
 

using System;
using System.Drawing;
using System.Windows.Forms;
   
class FourByFours: Form
{
     public static void Main()
     {
          Application.Run(new FourByFours());
     }
     public FourByFours()
     {
          Text = "Four by Fours";
          ResizeRedraw = true;
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
     }
     protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
     {
          Pen   pen   = new Pen(clr);
          Brush brush = new SolidBrush(clr);
          
          grfx.FillRectangles(brush, new Rectangle[] 
                                             {new Rectangle(8, 8, 4, 4)});

     }
}

    

   
 

using System;
using System.Drawing;
using System.Windows.Forms;
   
class TryOneInchEllipse: Form
{
     public static void Main()
     {
          Application.Run(new TryOneInchEllipse());
     }
     public TryOneInchEllipse()
     {
          ResizeRedraw = true; 
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
     }     
     protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
     {
          grfx.DrawEllipse(new Pen(clr), 0, 0, grfx.DpiX, grfx.DpiY);
     }
}

    

using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;

class FillModesClassical : Form {
public static void Main() {
Application.Run(new FillModesClassical());
}
public FillModesClassical() {
ResizeRedraw = true;
ClientSize = new Size(2 * ClientSize.Height, ClientSize.Height);
}
protected override void OnPaint(PaintEventArgs pea) {
DoPage(pea.Graphics, ForeColor, ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy) {
Brush brush = new SolidBrush(clr);
Point[] apt = new Point[5];

for (int i = 0; i < apt.Length; i++) { double dAngle = (i * 0.8 - 0.5) * Math.PI; apt[i] = new Point( (int)(cx * (0.25 + 0.24 * Math.Cos(dAngle))), (int)(cy * (0.50 + 0.48 * Math.Sin(dAngle)))); } grfx.FillPolygon(brush, apt, FillMode.Alternate); } } [/csharp]

   
 
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
   
class KeyholeClip: Form
{
     protected Image        image;
     protected GraphicsPath path;
   
     public static void Main()
     {
          Application.Run(new KeyholeClip());
     }
     public KeyholeClip()
     {
          ResizeRedraw = true;
          image = Image.FromFile("Color.jpg");
   
          path = new GraphicsPath();
          path.AddArc(80, 0, 80, 80, 45, -270);
          path.AddLine(70, 180, 170, 180);
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          pea.Graphics.SetClip(path);
          pea.Graphics.DrawImage(image, 0, 0, image.Width, image.Height);
     }      

}

    

   
 

using System;
using System.Drawing;
using System.Drawing.Drawing2D;

using System.Windows.Forms;

class KeyholeClipCentered : Form {
    GraphicsPath path = new GraphicsPath();
    Image image = Image.FromFile("Color.jpg");
    public static void Main() {
        Application.Run(new KeyholeClipCentered());
    }
    public KeyholeClipCentered() {
        ResizeRedraw = true;
        path.AddArc(80, 0, 80, 80, 45, -270);
        path.AddLine(70, 180, 170, 180);
    }
    protected override void OnPaint(PaintEventArgs pea) {
        DoPage(pea.Graphics, ForeColor, ClientSize.Width, ClientSize.Height);
    }
    protected void DoPage(Graphics grfx, Color clr, int cx, int cy) {
        grfx.SetClip(path);

        RectangleF rectf = path.GetBounds();
        int xOffset = (int)((cx - rectf.Width) / 2 - rectf.X);
        int yOffset = (int)((cy - rectf.Height) / 2 - rectf.Y);

        grfx.TranslateClip(xOffset, yOffset);
        grfx.DrawImage(image, xOffset, yOffset, image.Width, image.Height);
    }
}

    

   


  using System;
  using System.Drawing;
  using System.Drawing.Drawing2D;
  using System.Collections;
  using System.ComponentModel;
  using System.Windows.Forms;
  using System.Data;

  public class Form1 : System.Windows.Forms.Form
  {
    public Form1()
    {
      InitializeComponent();
      SetStyle(ControlStyles.ResizeRedraw, true);
    }
    private void InitializeComponent()
    {
      this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
      this.ClientSize = new System.Drawing.Size(400, 400);
      this.Text = "";
      this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);

    }

    static void Main() 
    {
      Application.Run(new Form1());
    }

    private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
    {
      Graphics g = e.Graphics;

      // Set quality of rendering.
      g.SmoothingMode = SmoothingMode.AntiAlias;
  
      // Configure graphics unit.
      g.PageUnit = GraphicsUnit.Millimeter;

        Point renderingOrgPt = new Point(0,0);

      renderingOrgPt.X = 100;
      renderingOrgPt.Y = 100;

      // Configure origin.
      g.TranslateTransform(renderingOrgPt.X,
        renderingOrgPt.Y);

      g.DrawRectangle(new Pen(Color.Red, 1), 0, 0, 100, 100);
      
      g.Dispose();

    }
  }