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Paradoxal Press
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Category: Programming
Level: Beginner to seasoned
900 pages
ISBN-10 097661322-0
ISBN-13 978-097661322-0
$59.99 USA
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Listing 18-12 extracted from chapter Windows forms applications
Listing 18-11< > Listing 18-13
This listing can be compiled with the command line: csc.exe /target:exe Example_18_12.cs Errors: 0 Warnings: 0
Example_18_12.cs
using System.Drawing;
using System.Drawing.Drawing2D;
public class Form1 : System.Windows.Forms.Form {
private void OnClick( object sender, System.EventArgs e ) {
using ( Graphics g = CreateGraphics() ) {
Bitmap m_Bmp = new Bitmap( "Lena.jpg" );
g.DrawImage( m_Bmp, new Point(5, 5) );
// Wait one second...
System.Threading.Thread.Sleep( 1000 );
int width = m_Bmp.Width;
int height = m_Bmp.Height;
Color cSrc, cDest;
for ( int y = 0; y < height; y++ )
for ( int x = 0; x < width; x++ ) {
cSrc = m_Bmp.GetPixel( x, y );
cDest=Color.FromArgb( 255-cSrc.R, 255-cSrc.G, 255-cSrc.B );
m_Bmp.SetPixel( x, y, cDest );
}
g.DrawImage( m_Bmp, new Point(5, 5) );
}
}
private System.Windows.Forms.Button button;
private System.ComponentModel.Container components = null;
public Form1() {
InitializeComponent();
}
protected override void Dispose( bool disposing ) {
if (disposing) {
if (components != null) {
components.Dispose();
}
}
base.Dispose(disposing);
}
private void InitializeComponent() {
this.button = new System.Windows.Forms.Button();
this.SuspendLayout();
this.button.Location = new System.Drawing.Point(208, 16);
this.button.Name = "Click";
this.button.TabIndex = 0;
this.button.Text = "Click";
this.button.Click += new System.EventHandler(this.OnClick);
this.AutoScaleDimensions = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.button});
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
}
[System.STAThread]
static void Main() {
System.Windows.Forms.Application.Run(new Form1());
}
}
Copyright Patrick Smacchia 2006 2007
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