using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

public class Form1 : Form {

protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
g.FillRectangle(Brushes.White, this.ClientRectangle);
Font f = new Font(“Times New Roman”, 16);
for (float angle = 0; angle < 360; angle += 45) { g.ResetTransform(); g.TranslateTransform(ClientRectangle.Width / 2, ClientRectangle.Height / 2); g.RotateTransform(angle); g.DrawString("Hello, World", f, Brushes.Black, 50, 0); } } public static void Main() { Application.Run(new Form1()); } } [/csharp]

   
 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

public class Form1 : Form {

    protected override void OnPaint(PaintEventArgs e) {
    Graphics g = e.Graphics;
    g.FillRectangle(Brushes.White, this.ClientRectangle);
    Font f = new Font("Times New Roman", 24);
    g.DrawString("Rotate then Translate", f, Brushes.Black, 0, 0);
    g.RotateTransform(45);
    g.TranslateTransform(150, 0);
    g.DrawString("Rotate  then Translate ", f, Brushes.Black, 0, 0);
    }
    public static void Main() {
        Application.Run(new Form1());
    }
}

    

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

using System.Drawing.Drawing2D;

public class Form1 : System.Windows.Forms.Form {
    GraphicsPath gP;
    [STAThread]
    static void Main() {
        Application.Run(new Form1());
    }
    protected override void OnPaint(System.Windows.Forms.PaintEventArgs e) {
        Graphics g = e.Graphics;
        DrawPathTransform(g);
        g.Dispose();
    }
    void AddStringToPath(string s) {
        int fSt = (int)FontStyle.Regular;
        Point xy = new Point(50, 10);
        FontFamily fF = new FontFamily("Times new roman");
        StringFormat sFr = StringFormat.GenericDefault;

        gP.AddString(s, fF, fSt, 100, xy, sFr);
    }
    void DrawPathTransform(Graphics g) {
        gP = new GraphicsPath();
        AddStringToPath("C#");

        g.FillPath(Brushes.Gray, gP);
        Matrix m = new Matrix();
        m.Translate(5, 5);
        gP.Transform(m);
        g.FillPath(Brushes.Yellow, gP);
        g.DrawPath(Pens.Red, gP);
    }
    void DrawClip(Graphics g) {
        gP = new GraphicsPath();
        AddStringToPath("C#");

        g.SetClip(gP);
        g.TranslateClip(-5, -5);

        RectangleF rc = gP.GetBounds();
        rc.Offset(-5, -5);
        g.FillRectangle(Brushes.Gray, rc);

        g.ResetClip();
        g.FillPath(Brushes.Yellow, gP);
        g.DrawPath(Pens.Red, gP);
    }
}

    

   
 

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

public class Form1 : System.Windows.Forms.Form {
    [STAThread]
    static void Main() {
        Application.Run(new Form1());
    }
    protected override void OnPaint(PaintEventArgs pea) {
        CubeDBuf();
    }
    private void CubeDBuf() {
        Graphics g;

        string path;
        int x = 100, y = 40;
        Point A = new Point(10, 50);
        Point B = new Point(180, 50);
        Point C = new Point(10, 170);

        Point a = new Point(A.X + x, A.Y - y);
        Point b = new Point(B.X + x, B.Y - y);
        Point Z = new Point(B.X, C.Y);

        Point[] p3Fro = { A, B, C };
        Point[] p3Top = { a, b, A };
        Point[] p3Rig = { B, b, Z };

        Bitmap bm = new Bitmap(B.X + x, C.Y + y);
        g = Graphics.FromImage(bm);

        path = "A.bmp";
        Image im1 = Image.FromFile(path);
        g.DrawImage(im1, p3Fro);

        path = "B.BMP";
        Image im3 = Image.FromFile(path);
        g.DrawImage(im3, p3Top);

        path = "C.bmp";
        Image im2 = Image.FromFile(path);
        g.DrawImage(im2, p3Rig);

        g = Graphics.FromHwnd(this.Handle);
        g.DrawImage(bm, 1, 1);

        g.Dispose();
    }
}

    

   
 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

public class MainForm : Form {
    private List<Point> myPts = new List<Point>();

    public MainForm() {
        this.Text = "Basic Paint Form";
        this.Paint += new PaintEventHandler(MainForm_Paint);
        this.MouseDown += new MouseEventHandler(MainForm_MouseDown);
    }

    void MainForm_MouseDown(object sender, MouseEventArgs e) {
        myPts.Add(new Point(e.X, e.Y));
        Invalidate();
    }

    public void OnPaint(PaintEventArgs e) {
        Graphics g = e.Graphics;
        g.DrawString("Hello GDI+", new Font("Times New Roman", 20),Brushes.Green, 0, 0);

        foreach (Point p in myPts)
            g.FillEllipse(Brushes.Firebrick, p.X, p.Y, 10, 10);
    }
}

    

   
 

using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
   
class AntiAlias: Form
{
     public static void Main()
     {
          Application.Run(new AntiAlias());
     }
     public AntiAlias()
     {
          Text = "Anti-Alias Demo";
          BackColor = SystemColors.Window;
          ForeColor = SystemColors.WindowText;
     }
     protected override void OnPaint(PaintEventArgs pea)
     {
          Graphics grfx = pea.Graphics;
          Pen      pen  = new Pen(ForeColor);
   
          grfx.PixelOffsetMode = PixelOffsetMode.Default;
   
          grfx.DrawLine(pen, 2, 2, 18, 10);
     }
}

    

   
 



using System;
using System.Drawing;
using System.Windows.Forms;
   
class DotsPerInch: Form
{
     public static void Main()
     {
          Application.Run(new DotsPerInch());
     }
     public DotsPerInch()
     {
          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.DrawString(String.Format("DpiX = {0}
DpiY = {1}",
                                        grfx.DpiX, grfx.DpiY),
                          Font, new SolidBrush(clr), 0, 0);
     }
}