Windows CE 开发

//--------------------------------------------------------------------
// FILENAME: ReaderForm2.cs
//
// Copyright(c) 2004 Symbol Technologies Inc. All rights reserved.
//
// DESCRIPTION:
//
// NOTES:
//
//
//--------------------------------------------------------------------
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

namespace CS_ScanSample3
{
 /// <summary>
 /// Summary description for ReaderForm2.
 /// </summary>
 public class ReaderForm2 : System.Windows.Forms.Form
 {
  private System.Windows.Forms.TextBox ReaderDataTextBox;
  private System.Windows.Forms.Button ReaderForm2Button;
  private System.EventHandler ReaderForm2EventHandler;
 
  public ReaderForm2()
  {
   //
   // Required for Windows Form Designer support
   //
   InitializeComponent();

   //
   // TODO: Add any constructor code after InitializeComponent call
   //
  }

  /// <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.ReaderDataTextBox = new System.Windows.Forms.TextBox();
   this.ReaderForm2Button = new System.Windows.Forms.Button();
   //
   // ReaderDataTextBox
   //
   this.ReaderDataTextBox.Location = new System.Drawing.Point(24, 24);
   this.ReaderDataTextBox.Size = new System.Drawing.Size(184, 22);
   this.ReaderDataTextBox.Text = "";
   //
   // ReaderForm2Button
   //
   this.ReaderForm2Button.Location = new System.Drawing.Point(72, 120);
   this.ReaderForm2Button.Size = new System.Drawing.Size(88, 25);
   this.ReaderForm2Button.Text = "Main Form";
   this.ReaderForm2Button.Click += new System.EventHandler(this.ReaderForm2Button_Click);
   //
   // ReaderForm2
   //
   this.BackColor = System.Drawing.Color.White;
   this.ClientSize = new System.Drawing.Size(240, 270);
   this.Controls.Add(this.ReaderForm2Button);
   this.Controls.Add(this.ReaderDataTextBox);
   this.Text = "ReaderForm2";
   this.Load += new System.EventHandler(this.ReaderForm2_Load);

  }
  #endregion

  /// <summary>
  /// Occurs before the form is displayed for the first time.
  /// </summary>
  private void ReaderForm2_Load(object sender, System.EventArgs e)
  {
   // Create a new delegate to handle scan notifications
   ReaderForm2EventHandler = new EventHandler(ReaderForm2_ReadNotify);
   
   // Set the event handler of the Scanning class to our delegate
   Scanning.MyEventHandler = ReaderForm2EventHandler;

   // Attach to activate and deactivate events
   this.Activated +=new EventHandler(ReaderForm2_Activated);

   // Start a read on the reader
   Scanning.StartRead();
  }

  /// <summary>
  /// Read complete or failure notification
  /// </summary>
  private void ReaderForm2_ReadNotify(object sender, EventArgs e)
  {
   Symbol.Barcode.ReaderData TheReaderData = Scanning.MyReaderData;

   // If it is a successful read (as opposed to a failed one)
   if ( TheReaderData.Result == Symbol.Results.SUCCESS )
   {
    // Display the data from this read into the text box
    ReaderDataTextBox.Text = TheReaderData.Text;

    // Start the next read
    Scanning.StartRead();
   }
  }

  /// <summary>
  /// Called when the form is activated. Never called in this sample since
  /// ReaderForm2 is invoked as a modal dialog.
  /// </summary>
  private void ReaderForm2_Activated(object sender, EventArgs e)
  {
   // Reset the scan event handler for the Scanning object everytime the form is activated
   Scanning.MyEventHandler = ReaderForm2EventHandler;

   // Start the next read
   Scanning.StartRead();
  }

  /// <summary>
  /// Called upon the press of "Main Form" Button and causes ReaderForm2 to close.
  /// </summary>
  private void ReaderForm2Button_Click(object sender, System.EventArgs e)
  {
   // Cancel the read
   Scanning.StopRead();

   // Exit this form
   this.Close();
  }
 }
}