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Articles / Desktop Programming / Windows Forms

PictureBox Zoom

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30 Oct 2007CPOL4 min read 220.7K   17.9K   67  
This article will show you how to create two pictureboxes, one of them acting as a magnifier for the other one.
namespace PictureBox_Zoom
{
    partial class MainForm
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (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()
        {
            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(MainForm));
            this.picImage = new System.Windows.Forms.PictureBox();
            this.picZoom = new System.Windows.Forms.PictureBox();
            this.btnLoadImage = new System.Windows.Forms.Button();
            this.trbZoomFactor = new System.Windows.Forms.TrackBar();
            this.lblZoomFactor = new System.Windows.Forms.Label();
            this.btnSelectColor = new System.Windows.Forms.Button();
            ((System.ComponentModel.ISupportInitialize)(this.picImage)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.picZoom)).BeginInit();
            ((System.ComponentModel.ISupportInitialize)(this.trbZoomFactor)).BeginInit();
            this.SuspendLayout();
            // 
            // picImage
            // 
            this.picImage.BackColor = System.Drawing.Color.White;
            this.picImage.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            this.picImage.Cursor = System.Windows.Forms.Cursors.Cross;
            this.picImage.Location = new System.Drawing.Point(12, 12);
            this.picImage.Name = "picImage";
            this.picImage.Size = new System.Drawing.Size(350, 350);
            this.picImage.TabIndex = 0;
            this.picImage.TabStop = false;
            this.picImage.MouseMove += new System.Windows.Forms.MouseEventHandler(this.picImage_MouseMove);
            // 
            // picZoom
            // 
            this.picZoom.BackColor = System.Drawing.Color.White;
            this.picZoom.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            this.picZoom.Location = new System.Drawing.Point(368, 12);
            this.picZoom.Name = "picZoom";
            this.picZoom.Size = new System.Drawing.Size(120, 120);
            this.picZoom.TabIndex = 1;
            this.picZoom.TabStop = false;
            // 
            // btnLoadImage
            // 
            this.btnLoadImage.Location = new System.Drawing.Point(12, 368);
            this.btnLoadImage.Name = "btnLoadImage";
            this.btnLoadImage.Size = new System.Drawing.Size(104, 23);
            this.btnLoadImage.TabIndex = 2;
            this.btnLoadImage.Text = "Load image";
            this.btnLoadImage.UseVisualStyleBackColor = true;
            this.btnLoadImage.Click += new System.EventHandler(this.btnLoadImage_Click);
            // 
            // trbZoomFactor
            // 
            this.trbZoomFactor.LargeChange = 1;
            this.trbZoomFactor.Location = new System.Drawing.Point(368, 138);
            this.trbZoomFactor.Maximum = 6;
            this.trbZoomFactor.Minimum = 2;
            this.trbZoomFactor.Name = "trbZoomFactor";
            this.trbZoomFactor.Size = new System.Drawing.Size(99, 42);
            this.trbZoomFactor.TabIndex = 3;
            this.trbZoomFactor.Value = 3;
            this.trbZoomFactor.ValueChanged += new System.EventHandler(this.trbZoomFactor_ValueChanged);
            // 
            // lblZoomFactor
            // 
            this.lblZoomFactor.AutoSize = true;
            this.lblZoomFactor.Location = new System.Drawing.Point(470, 149);
            this.lblZoomFactor.Name = "lblZoomFactor";
            this.lblZoomFactor.Size = new System.Drawing.Size(18, 13);
            this.lblZoomFactor.TabIndex = 4;
            this.lblZoomFactor.Text = "x3";
            // 
            // btnSelectColor
            // 
            this.btnSelectColor.Location = new System.Drawing.Point(204, 368);
            this.btnSelectColor.Name = "btnSelectColor";
            this.btnSelectColor.Size = new System.Drawing.Size(158, 23);
            this.btnSelectColor.TabIndex = 5;
            this.btnSelectColor.Text = "Background color...";
            this.btnSelectColor.UseVisualStyleBackColor = true;
            this.btnSelectColor.Click += new System.EventHandler(this.btnSelectColor_Click);
            // 
            // MainForm
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(500, 400);
            this.Controls.Add(this.btnSelectColor);
            this.Controls.Add(this.lblZoomFactor);
            this.Controls.Add(this.trbZoomFactor);
            this.Controls.Add(this.btnLoadImage);
            this.Controls.Add(this.picZoom);
            this.Controls.Add(this.picImage);
            this.DoubleBuffered = true;
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
            this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
            this.MaximizeBox = false;
            this.Name = "MainForm";
            this.Text = "PictureBox Zoom Example";
            ((System.ComponentModel.ISupportInitialize)(this.picImage)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.picZoom)).EndInit();
            ((System.ComponentModel.ISupportInitialize)(this.trbZoomFactor)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.PictureBox picImage;
        private System.Windows.Forms.PictureBox picZoom;
        private System.Windows.Forms.Button btnLoadImage;
        private System.Windows.Forms.TrackBar trbZoomFactor;
        private System.Windows.Forms.Label lblZoomFactor;
        private System.Windows.Forms.Button btnSelectColor;
    }
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


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