Scrolling Demo : Scrolling « 2D Graphics « C# / C Sharp

1. C# / C Sharp
2. 2D Graphics
3. Scrolling

Scrolling Demo

/*
Professional Windows GUI Programming Using C#
by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury, 
   Zach Greenvoss, Shripad Kulkarni, Neil Whitlow

Publisher: Peer Information
ISBN: 1861007663
*/
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace Scrolling
{
    /// <summary>
    /// Summary description for Scrolling.
    /// </summary>
    public class Scrolling : System.Windows.Forms.Form
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        public Scrolling()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();
            this.Text = "Scrolling";
            this.Size = new Size(210, 290);

            //
            // 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()
        {
            // 
            // Scrolling
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(176, 254);
            this.Name = "Scrolling";
            this.Text = "Scrolling";

        }
        #endregion

        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main() 
        {
            Application.Run(new Scrolling());
        }
        protected override void OnPaint(PaintEventArgs e)
        {
            Graphics g;
            g = Graphics.FromHwnd(this.Handle);
            GraphicsUnit units = GraphicsUnit.Pixel;

            string path = "MonetZsu.jpg";
            Image im = Image.FromFile(path);
            this.AutoScrollMinSize = new Size(im.Width, im.Height);
            //this.AutoScroll = true;

            Point P = this.AutoScrollPosition;
            Rectangle dstR = this.ClientRectangle;
            RectangleF srcR = new RectangleF(-P.X, -P.Y, dstR.Width, dstR.Height);
            g.DrawImage(im, dstR, srcR, units);
            g.Dispose();
        }
    }
}


           
       

P18_Scrolling.zip( 19 k)

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