/* 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 ImageZoom { /// <summary> /// Summary description for ImageZoom. /// </summary> public class ImageZoom1 : System.Windows.Forms.Form { private System.Windows.Forms.Label label1; private System.Windows.Forms.GroupBox groupBox1; private System.Windows.Forms.RadioButton radioButton1; private System.Windows.Forms.RadioButton radioButton2; private System.Windows.Forms.RadioButton radioButton3; private System.Windows.Forms.RadioButton radioButton4; private System.Windows.Forms.Label label2; private System.Windows.Forms.CheckBox checkBox1; Image im = null; Image im2 = null; /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.Container components = null; public ImageZoom1() { // // Required for Windows Form Designer support // InitializeComponent(); this.Text = "Zooming"; this.label1.Text = ""; this.groupBox1.Text = "Zoom"; this.checkBox1.Text = "Paint"; this.radioButton1.Checked = false; this.radioButton1.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged); this.radioButton2.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged); this.radioButton3.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged); this.radioButton4.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged); // // 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() { this.label1 = new System.Windows.Forms.Label(); this.groupBox1 = new System.Windows.Forms.GroupBox(); this.checkBox1 = new System.Windows.Forms.CheckBox(); this.radioButton1 = new System.Windows.Forms.RadioButton(); this.radioButton2 = new System.Windows.Forms.RadioButton(); this.radioButton3 = new System.Windows.Forms.RadioButton(); this.radioButton4 = new System.Windows.Forms.RadioButton(); this.label2 = new System.Windows.Forms.Label(); this.groupBox1.SuspendLayout(); this.SuspendLayout(); // // label1 // this.label1.Location = new System.Drawing.Point(8, 16); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(200, 240); this.label1.TabIndex = 0; this.label1.Text = "label1"; // // groupBox1 // this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] { this.checkBox1, this.radioButton1, this.radioButton2, this.radioButton3, this.radioButton4}); this.groupBox1.Location = new System.Drawing.Point(232, 48); this.groupBox1.Name = "groupBox1"; this.groupBox1.Size = new System.Drawing.Size(72, 128); this.groupBox1.TabIndex = 1; this.groupBox1.TabStop = false; this.groupBox1.Text = "groupBox1"; // // checkBox1 // this.checkBox1.Location = new System.Drawing.Point(8, 32); this.checkBox1.Name = "checkBox1"; this.checkBox1.Size = new System.Drawing.Size(56, 24); this.checkBox1.TabIndex = 1; this.checkBox1.Text = "checkBox1"; this.checkBox1.CheckedChanged += new System.EventHandler(this.checkBox1_CheckedChanged); // // radioButton1 // this.radioButton1.Location = new System.Drawing.Point(8, 64); this.radioButton1.Name = "radioButton1"; this.radioButton1.Size = new System.Drawing.Size(16, 24); this.radioButton1.TabIndex = 0; this.radioButton1.Text = "radioButton1"; // // radioButton2 // this.radioButton2.Location = new System.Drawing.Point(40, 64); this.radioButton2.Name = "radioButton2"; this.radioButton2.Size = new System.Drawing.Size(16, 24); this.radioButton2.TabIndex = 0; this.radioButton2.Text = "radioButton1"; // // radioButton3 // this.radioButton3.Location = new System.Drawing.Point(8, 96); this.radioButton3.Name = "radioButton3"; this.radioButton3.Size = new System.Drawing.Size(16, 24); this.radioButton3.TabIndex = 0; this.radioButton3.Text = "radioButton1"; // // radioButton4 // this.radioButton4.Location = new System.Drawing.Point(40, 96); this.radioButton4.Name = "radioButton4"; this.radioButton4.Size = new System.Drawing.Size(16, 24); this.radioButton4.TabIndex = 0; this.radioButton4.Text = "radioButton1"; // // label2 // this.label2.Location = new System.Drawing.Point(328, 16); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(200, 240); this.label2.TabIndex = 0; this.label2.Text = "label1"; // // ImageZoom // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(536, 266); this.Controls.AddRange(new System.Windows.Forms.Control[] { this.groupBox1, this.label1, this.label2}); this.Name = "ImageZoom"; this.Text = "ImageZoom"; this.groupBox1.ResumeLayout(false); this.ResumeLayout(false); } #endregion /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.Run(new ImageZoom1()); } protected override void OnPaint(PaintEventArgs e) { ImageZoom(); } private void checkBox1_CheckedChanged(object sender, System.EventArgs e) { ImageZoom(); } private void radioButtons_CheckedChanged(object sender, System.EventArgs e) { ImageZoom(); } protected void ImageZoom() { Graphics g1 = Graphics.FromHwnd(this.label1.Handle); Graphics g2 = Graphics.FromHwnd(this.label2.Handle); Rectangle rec; Rectangle recPart; if (this.checkBox1.Checked) { if (im == null) ReadImage(); rec = new Rectangle(0, 0, label1.Width, label1.Height); g1.DrawImage(im, rec); // Center part: recPart = new Rectangle(im.Width/4, im.Height/4, im.Width/2, im.Height/2); if(this.radioButton1.Checked) // Left-Top part recPart = new Rectangle(0, 0, im.Width/2, im.Height/2); if(this.radioButton2.Checked) // Right-Top part recPart = new Rectangle(im.Width/2, 0, im.Width/2, im.Height/2); if(this.radioButton3.Checked) // Left-Down part recPart = new Rectangle(0, im.Height/2, im.Width/2, im.Height/2); if(this.radioButton4.Checked) // Right-Down part recPart = new Rectangle(im.Width/2, im.Height/2, im.Width/2, im.Height/2); g2.DrawImage(im, rec, recPart, GraphicsUnit.Pixel); } else { Clear(g1); Clear(g2); } g1.Dispose(); g2.Dispose(); } protected void ReadImage() { string path = @"szeret3.BMP"; im = Image.FromFile(path); this.radioButton1.Enabled = true; this.radioButton2.Enabled = true; this.radioButton3.Enabled = true; this.radioButton4.Enabled = true; } protected void Clear(Graphics g) { g.Clear(this.BackColor); g.Dispose(); im = null; im2 = null; this.radioButton1.Checked = false; this.radioButton2.Checked = false; this.radioButton3.Checked = false; this.radioButton4.Checked = false; this.radioButton1.Enabled = false; this.radioButton2.Enabled = false; this.radioButton3.Enabled = false; this.radioButton4.Enabled = false; } } } P15_ImageZoom.zip( 397 k)