form1.cs

Barcode label printing on Zebra printers Using Print DLL s. To use this code, we have to download su

//--------------------------------------------------------------------
// FILENAME: Form1.cs
//
// Copyright(c) 2002 Symbol Technologies Inc. All rights reserved.
//
// DESCRIPTION:
//
// NOTES:
//
//--------------------------------------------------------------------
using System;
using System.Drawing;
using System.Collections;
using System.Windows.Forms;
using System.Data;

using Symbol.Printing;

namespace CS_PrintSample1
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.ComboBox comboBox1;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button2;
        private PrintDocument prnDoc;
        private static bool bPortrait = true;   // The default dispaly orientation 
        // has been set to Portrait.

        private bool bSkipMaxLen = false;    // The restriction on the maximum 
        // physical length is considered by default.

        private bool bInitialScale = true;   // The flag to track whether the 
        // scaling logic is applied for
        // the first time (from scatch) or not.
        // Based on that, the (outer) width/height values
        // of the form will be set or not.
        // Initially set to true.

        private int resWidthReference = 242;   // The (cached) width of the form. 
        // INITIALLY HAS TO BE SET TO THE WIDTH OF THE FORM AT DESIGN TIME (IN PIXELS).
        // This setting is also obtained from the platform only on
        // Windows CE devices before running the application on the device, as a verification.
        // For PocketPC (& Windows Mobile) devices, the failure to set this properly may result in the distortion of GUI/viewability.

        private int resHeightReference = 225;  // The (cached) height of the form.
        // INITIALLY HAS TO BE SET TO THE HEIGHT OF THE FORM AT DESIGN TIME (IN PIXELS).
        // This setting is also obtained from the platform only on
        // Windows CE devices before running the application on the device, as a verification.
        // For PocketPC (& Windows Mobile) devices, the failure to set this properly may result in the distortion of GUI/viewability.

        private const double maxLength = 5.5;  // The maximum physical width/height of the sample (in inches).
        // The actual value on the device may slightly deviate from this
        // since the calculations based on the (received) DPI & resolution values 
        // would provide only an approximation, so not 100% accurate.



		public Form1()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

            this.comboBox1.Focus();
		}
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			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.comboBox1 = new System.Windows.Forms.ComboBox();
            this.label1 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.label3 = new System.Windows.Forms.Label();
            this.textBox2 = new System.Windows.Forms.TextBox();
            this.button1 = new System.Windows.Forms.Button();
            this.button2 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // comboBox1
            // 
            this.comboBox1.Location = new System.Drawing.Point(120, 16);
            this.comboBox1.Name = "comboBox1";
            this.comboBox1.Size = new System.Drawing.Size(104, 23);
            this.comboBox1.TabIndex = 0;
            // 
            // label1
            // 
            this.label1.Location = new System.Drawing.Point(16, 16);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(96, 24);
            this.label1.Text = "Select a printer:";
            // 
            // label2
            // 
            this.label2.Location = new System.Drawing.Point(16, 64);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(80, 24);
            this.label2.Text = "Text:";
            // 
            // textBox1
            // 
            this.textBox1.Location = new System.Drawing.Point(120, 64);
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(104, 23);
            this.textBox1.TabIndex = 1;
            this.textBox1.Text = "CS_PrintSample1";
            // 
            // label3
            // 
            this.label3.Location = new System.Drawing.Point(16, 112);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(80, 24);
            this.label3.Text = "Barcode:";
            // 
            // textBox2
            // 
            this.textBox2.Location = new System.Drawing.Point(120, 112);
            this.textBox2.Name = "textBox2";
            this.textBox2.ReadOnly = true;
            this.textBox2.Size = new System.Drawing.Size(104, 23);
            this.textBox2.TabIndex = 2;
            this.textBox2.Text = "123456";
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(16, 160);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(72, 24);
            this.button1.TabIndex = 3;
            this.button1.Text = "Print";
            this.button1.Click += new System.EventHandler(this.button1_Click);
            this.button1.KeyDown += new System.Windows.Forms.KeyEventHandler(this.button1_KeyDown);
            // 
            // button2
            // 
            this.button2.Location = new System.Drawing.Point(136, 160);
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(72, 24);
            this.button2.TabIndex = 4;
            this.button2.Text = "Exit";
            this.button2.Click += new System.EventHandler(this.button2_Click);
            this.button2.KeyDown += new System.Windows.Forms.KeyEventHandler(this.button2_KeyDown);
            // 
            // Form1
            // 
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Inherit;
            this.BackColor = System.Drawing.Color.White;
            this.ClientSize = new System.Drawing.Size(240, 200);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.textBox2);
            this.Controls.Add(this.label3);
            this.Controls.Add(this.textBox1);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.comboBox1);
            this.Name = "Form1";
            this.Text = "CS_PrintSample1";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.KeyUp += new System.Windows.Forms.KeyEventHandler(this.Form1_KeyUp);
            this.Resize += new System.EventHandler(this.Form1_Resize);
            this.ResumeLayout(false);

		}
		#endregion

        /// <summary>
        /// This function does the (initial) scaling of the form
        /// by re-setting the related parameters (if required) &
        /// then calling the Scale(...) internally. 
        /// </summary>
        /// 
        public void DoScale()
        {
            if (Screen.PrimaryScreen.Bounds.Width > Screen.PrimaryScreen.Bounds.Height)
            {
                bPortrait = false; // If the display orientation is not portrait (so it's landscape), set the flag to false.
            }

            if (this.WindowState == FormWindowState.Maximized)    // If the form is maximized by default.
            {
                this.bSkipMaxLen = true; // we need to skip the max. length restriction
            }

            if (Symbol.Win32.PlatformType == "SYMBOL WinCE") // Only on Windows CE devices
            {
                this.resWidthReference = this.Width;   // The width of the form at design time (in pixels) is obtained from the platorm.
                this.resHeightReference = this.Height; // The height of the form at design time (in pixels) is obtained from the platform.
            }

            Scale(this); // Initial scaling of the GUI
        }

        /// <summary>
        /// This function scales the given Form & its child controls in order to
        /// make them completely viewable, based on the screen width & height.
        /// </summary>
        private static void Scale(Form1 frm)
        {
            int PSWAW = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Width;    // The width of the working area (in pixels).
            int PSWAH = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Height;   // The height of the working area (in pixels).

            // The entire screen has been taken in to account below 
            // in order to decide the half (S)VGA settings etc.
            if (!((Screen.PrimaryScreen.Bounds.Width <= (1.5) * (Screen.PrimaryScreen.Bounds.Height))
            && (Screen.PrimaryScreen.Bounds.Height <= (1.5) * (Screen.PrimaryScreen.Bounds.Width))))
            {
                if ((Screen.PrimaryScreen.Bounds.Width) > (Screen.PrimaryScreen.Bounds.Height))
                {
                    PSWAW = (int)((1.33) * PSWAH);  // If the width/height ratio goes beyond 1.5,
                    // the (longer) effective width is made shorter.
                }

            }

            System.Drawing.Graphics graphics = frm.CreateGraphics();

            float dpiX = graphics.DpiX; // Get the horizontal DPI value.

            if (frm.bInitialScale == true) // If an initial scale (from scratch)
            {
                if (Symbol.Win32.PlatformType == "PocketPC") // If the platform is either Pocket PC or Windows Mobile
                {
                    frm.Width = PSWAW;  // Set the form width. However this setting
                    // would be the ultimate one for Pocket PC (& Windows Mobile)devices.
                    // Just for the sake of consistency, it's explicitely specified here.
                }
                else
                {
                    frm.Width = (int)((frm.Width) * (PSWAW)) / (frm.resWidthReference); // Set the form width for others (Windows CE devices).

                }
            }
            if ((frm.Width <= maxLength * dpiX) || frm.bSkipMaxLen == true) // The calculation of the width & left values for each control
            // without taking the maximum length restriction into consideration.
            {
                foreach (System.Windows.Forms.Control cntrl in frm.Controls)
                {
                    cntrl.Width = ((cntrl.Width) * (frm.Width)) / (frm.resWidthReference);
                    cntrl.Left = ((cntrl.Left) * (frm.Width)) / (frm.resWidthReference);

                    if (cntrl is System.Windows.Forms.TabControl)
                    {
                        foreach (System.Windows.Forms.TabPage tabPg in cntrl.Controls)
                        {
                            foreach (System.Windows.Forms.Control cntrl2 in tabPg.Controls)
                            {
                                cntrl2.Width = (((cntrl2.Width) * (frm.Width)) / (frm.resWidthReference));
                                cntrl2.Left = (((cntrl2.Left) * (frm.Width)) / (frm.resWidthReference));
                            }
                        }
                    }
                }

            }
            else
            {   // The calculation of the width & left values for each control
                // with the maximum length restriction taken into consideration.
                foreach (System.Windows.Forms.Control cntrl in frm.Controls)
                {
                    cntrl.Width = (int)(((cntrl.Width) * (PSWAW) * (maxLength * dpiX)) / (frm.resWidthReference * (frm.Width)));