Csharp/C Sharp by API/System.Drawing/Bitmap

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Bitmap.CompositingMode

<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public class Form1 : Form { 

   protected override void OnPaint(PaintEventArgs e) {
   Graphics gForm = e.Graphics;
   gForm.FillRectangle(Brushes.White, this.ClientRectangle);
   for (int i = 1; i <= 7; ++i)
   {
     Rectangle r = new Rectangle(i * 40 - 15, 0, 15,
                   this.ClientRectangle.Height);
     gForm.FillRectangle(Brushes.Orange, r);
   }
   Bitmap bmp = new Bitmap(260, 260,System.Drawing.Imaging.PixelFormat.Format32bppArgb);
   Graphics gBmp = Graphics.FromImage(bmp);
   gBmp.rupositingMode = System.Drawing.Drawing2D.rupositingMode.SourceCopy;
   gForm.DrawImage(bmp, 20, 20, bmp.Width, bmp.Height);
   bmp.Dispose();
   gBmp.Dispose();
   }
   public static void Main() {
       Application.Run(new Form1());
   }

} 

 </source>


Bitmap.Height

<source lang="csharp"> 

 using System;
 using System.Drawing;
 using System.Drawing.Drawing2D;
 using System.Collections;
 using System.ruponentModel;
 using System.Windows.Forms;
 using System.Data;
 using System.Drawing.Imaging;
 public class Form1 : System.Windows.Forms.Form
 {
   public Form1()
   {
     InitializeComponent();
   }
   private void InitializeComponent()
   {
     this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
     this.ClientSize = new System.Drawing.Size(292, 273);
     this.Text = "";
     this.Resize += new System.EventHandler(this.Form1_Resize);
     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;
     Bitmap bmp = new Bitmap("winter.jpg");
     Rectangle r = new Rectangle(0, 0, bmp.Width, bmp.Height);
     g.DrawImage(bmp, r, r, GraphicsUnit.Pixel);
   }
   private void Form1_Resize(object sender, System.EventArgs e)
   {
     Invalidate();
   }
 }
          
  
 </source>


Bitmap.HorizontalResolution

<source lang="csharp"> 

 using System;
 using System.Drawing;
 using System.Drawing.Drawing2D;
 using System.Collections;
 using System.ruponentModel;
 using System.Windows.Forms;
 using System.Data;
 using System.Drawing.Imaging;
 public class Form1 : System.Windows.Forms.Form
 {
   public Form1()
   {
     InitializeComponent();
   }
   private void InitializeComponent()
   {
     this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
     this.ClientSize = new System.Drawing.Size(292, 273);
     this.Text = "";
     this.Resize += new System.EventHandler(this.Form1_Resize);
     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;
     Bitmap bmp = new Bitmap("winter.jpg");
     g.DrawImage(bmp, 0, 0);
     Console.WriteLine("Screen resolution: " + g.DpiX + "DPI");
     Console.WriteLine("Image resolution: " + bmp.HorizontalResolution + "DPI");
     Console.WriteLine("Image Width: " + bmp.Width);
     Console.WriteLine("Image Height: " + bmp.Height);
     SizeF s = new SizeF(bmp.Width * (g.DpiX / bmp.HorizontalResolution),
               bmp.Height * (g.DpiY / bmp.VerticalResolution));
     Console.WriteLine("Display size of image: " + s);
   }
   private void Form1_Resize(object sender, System.EventArgs e)
   {
     Invalidate();
   }
 }
  
 </source>


Bitmap.MakeTransparent( );

<source lang="csharp">

using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Drawing.Imaging; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; namespace BitmapOther_c { 

   /// <summary>
   /// Summary description for BitmapOther.
   /// </summary>
 public class BitmapOther : System.Windows.Forms.Form
 {
   /// <summary>
   /// Required designer variable.
   /// </summary>
   private System.ruponentModel.Container components = null;
   public BitmapOther()
   {
     //
     // Required for Windows Form Designer support
     //
     InitializeComponent();
     //
     // TODO: Add any constructor code after InitializeComponent call
     //
   }
   /// <summary>
   /// Clean up any resources being used.
   /// </summary>
   protected override void Dispose( bool disposing )
   {
     if( disposing )
     {
       if (components != null) 
       {
         components.Dispose();
       }
     }
     base.Dispose( disposing );
   }
       #region Windows Form Designer generated code
   /// <summary>
   /// Required method for Designer support - do not modify
   /// the contents of this method with the code editor.
   /// </summary>
   private void InitializeComponent()
   {
     // 
     // BitmapOther
     // 
     this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
     this.ClientSize = new System.Drawing.Size(292, 273);
     this.Name = "BitmapOther";
     this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
     this.Text = "BitmapOther";
     this.Load += new System.EventHandler(this.BitmapOther_Load);
   }
       #endregion
   /// <summary>
   /// The main entry point for the application.
   /// </summary>
   [STAThread]
   static void Main() 
   {
     Application.Run(new BitmapOther());
   }
   private void BitmapOther_Load(object sender, System.EventArgs e)
   {
   
   }
   protected override void OnPaint ( PaintEventArgs e )
   {
     Bitmap BMP = new Bitmap("Colorbars.JPG");
     Point Pt = new Point(20,20);
  //   BMP.SetPixel(15,20,Color.Black);
     BMP.MakeTransparent( BMP.GetPixel(15,25) );
     e.Graphics.DrawImage(BMP, Pt);
     e.Graphics.DrawLine(new Pen(Brushes.GreenYellow,30),60,60,200,60);



   }
  }
   }
  
   
 </source>


Bitmap.PhysicalDimension

<source lang="csharp">

using System; using System.IO; using System.Drawing;

class MainClass { 

   static public void Main()
   {
       Bitmap img = new Bitmap("winter.jpg");
       
       Console.WriteLine(img.PhysicalDimension.ToString() );
       Console.WriteLine(img.Height.ToString() );
       Console.WriteLine(img.Width.ToString() );
       Console.WriteLine(img.RawFormat.ToString() );
       Console.WriteLine(img.Size.ToString() );
   }

} 


 </source>


Bitmap.PixelFormat

<source lang="csharp">

using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Drawing.Drawing2D; using System.Drawing.Imaging; using System.Text; using System.Windows.Forms; public class MainClass { 

   public static void Main() {
       // Create two new bitmap images
       Bitmap bmp1 = new Bitmap(100, 100, PixelFormat.Format32bppArgb);
       Bitmap bmp2 = new Bitmap(100, 100, PixelFormat.Format24bppRgb);
       // Test for alpha 
       bool b1 = ((bmp1.PixelFormat & PixelFormat.Alpha) != 0);
       bool b2 = ((bmp2.PixelFormat & PixelFormat.Alpha) != 0);
       // Output results to console window
       Console.WriteLine("bmp1 has alpha?: " + b1);
       Console.WriteLine("bmp2 has alpha?: " + b2);
       // Clean up
       bmp1.Dispose();
       bmp2.Dispose();
   }

} 

 </source>


Bitmap.RawFormat

<source lang="csharp">

using System; using System.IO; using System.Drawing;

class MainClass { 

   static public void Main()
   {
       Bitmap img = new Bitmap("winter.jpg");
       
       Console.WriteLine(img.PhysicalDimension.ToString() );
       Console.WriteLine(img.Height.ToString() );
       Console.WriteLine(img.Width.ToString() );
       Console.WriteLine(img.RawFormat.ToString() );
       Console.WriteLine(img.Size.ToString() );
   }

} 


 </source>


Bitmap.SetResolution(600f, 600f);

<source lang="csharp"> 

 using System;
 using System.Drawing;
 using System.Drawing.Drawing2D;
 using System.Collections;
 using System.ruponentModel;
 using System.Windows.Forms;
 using System.Data;
 using System.Drawing.Imaging;
 public class Form1 : System.Windows.Forms.Form
 {
   public Form1()
   {
     InitializeComponent();
   }
   private void InitializeComponent()
   {
     this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
     this.ClientSize = new System.Drawing.Size(292, 273);
     this.Text = "";
     this.Resize += new System.EventHandler(this.Form1_Resize);
     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;
     Bitmap bmp = new Bitmap("winter.jpg");
     g.FillRectangle(Brushes.White, this.ClientRectangle);
     bmp.SetResolution(600f, 600f);
     g.DrawImage(bmp, 0, 0);
     bmp.SetResolution(1200f, 1200f);
     g.DrawImage(bmp, 180, 0);
   }
   private void Form1_Resize(object sender, System.EventArgs e)
   {
     Invalidate();
   }
 }
  
 </source>


Bitmap.Size

<source lang="csharp"> using System; using System.IO; using System.Drawing;

class MainClass { 

   static public void Main()
   {
       Bitmap img = new Bitmap("winter.jpg");
       
       Console.WriteLine(img.PhysicalDimension.ToString() );
       Console.WriteLine(img.Height.ToString() );
       Console.WriteLine(img.Width.ToString() );
       Console.WriteLine(img.RawFormat.ToString() );
       Console.WriteLine(img.Size.ToString() );
   }

} 


 </source>


Bitmap.Width

<source lang="csharp"> 

 using System;
 using System.Drawing;
 using System.Drawing.Drawing2D;
 using System.Collections;
 using System.ruponentModel;
 using System.Windows.Forms;
 using System.Data;
 using System.Drawing.Imaging;
 public class Form1 : System.Windows.Forms.Form
 {
   public Form1()
   {
     InitializeComponent();
   }
   private void InitializeComponent()
   {
     this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
     this.ClientSize = new System.Drawing.Size(292, 273);
     this.Text = "";
     this.Resize += new System.EventHandler(this.Form1_Resize);
     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;
     Bitmap bmp = new Bitmap("winter.jpg");
     Rectangle r = new Rectangle(0, 0, bmp.Width, bmp.Height);
     g.DrawImage(bmp, this.ClientRectangle);
   }
   private void Form1_Resize(object sender, System.EventArgs e)
   {
     Invalidate();
   }
 }
  
   
 </source>


new Bitmap(String fileName)

<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; 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;
   Bitmap bmp = new Bitmap("rama.jpg");
   Rectangle r = new Rectangle(0, 0, bmp.Width, bmp.Height);
   g.DrawImage(bmp, r, r, GraphicsUnit.Pixel);
   }
   public static void Main() {
       Application.Run(new Form1());
   }

} 


 </source>
Источник — «http://www.nfex.ru/index.php?title=Csharp/C_Sharp_by_API/System.Drawing/Bitmap&oldid=4610»