Subclass PictureBox : PictureBox « GUI Windows Form « C# / C Sharp

1. C# / C Sharp
2. GUI Windows Form
3. PictureBox

Subclass PictureBox

 
using System;
using System.Drawing;
using System.Windows.Forms;
   
class PictureBoxPlusDemo: Form
{
     public static void Main()
     {
          Application.Run(new PictureBoxPlusDemo());
     }
     public PictureBoxPlusDemo()
     {
          Text = "PictureBoxPlus Demo";
   
          PictureBoxPlus picbox = new PictureBoxPlus();
          picbox.Parent = this;
          picbox.Dock = DockStyle.Fill;
          picbox.Image = Image.FromFile("Color.jpg");
     }
}
     class PictureBoxPlus: PictureBox
     {
          protected override void OnPaint(PaintEventArgs pea)
          {
               ScaleImageIsotropically(pea.Graphics, Image,ClientRectangle);
          }
          void ScaleImageIsotropically(Graphics grfx, Image image,
                                       Rectangle rect)
          {
               SizeF sizef = 
                    new SizeF(image.Width / image.HorizontalResolution,
                              image.Height / image.VerticalResolution);
   
               float fScale = Math.Min(rect.Width  / sizef.Width,
                                       rect.Height / sizef.Height);
   
               sizef.Width  *= fScale;
               sizef.Height *= fScale;
          
               grfx.DrawImage(image,
                              rect.X + (rect.Width  - sizef.Width ) / 2,
                              rect.Y + (rect.Height - sizef.Height) / 2,
                              sizef.Width, sizef.Height);
          }
     }

 

Related examples in the same category

1.	PictureBox Click event
2.	PictureBox Scroll Text
3.	PictureBox visible and invisible
4.	Load image to ImageBox
5.	PictureBox Demo
6.	SizeMode in PictureBox
7.	Dragging Images