readerform.cs

Symbol MC3000 Visual C 条码扫码范例程序之1

//--------------------------------------------------------------------
// FILENAME: ReaderForm.cs
//
// Copyright(c) 2005 Symbol Technologies Inc. All rights reserved.
//
// DESCRIPTION:
//
// NOTES:
//
// 
//--------------------------------------------------------------------
using System;
using System.Windows.Forms;

namespace CS_ScanSample2
{
	/// <summary>
	/// CS_ScanSample2 Form class.
	/// </summary>
	public class ReaderForm : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button CodesButton;
		private System.Windows.Forms.Label EventLabel;
		private System.Windows.Forms.TextBox EventTextBox;
		private System.Windows.Forms.Label LengthLabel;
		private System.Windows.Forms.TextBox LengthTextBox;
		private System.Windows.Forms.Label TimeLabel;
		private System.Windows.Forms.TextBox TimeTextBox;
		private System.Windows.Forms.Label SourceLabel;
		private System.Windows.Forms.TextBox SourceTextBox;
		private System.Windows.Forms.Label TypeLabel;
		private System.Windows.Forms.TextBox TypeTextBox;
		private System.Windows.Forms.Label DataLabel;
		private System.Windows.Forms.TextBox DataTextBox;
		private System.Windows.Forms.Button ParamsButton;
		private System.Windows.Forms.Button ViewButton;
		private System.Windows.Forms.Button ScanButton;
		private System.Windows.Forms.Button AboutButton;
		private System.Windows.Forms.Button CloseButton;
	
		public ReaderForm()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

            this.ScanButton.Focus();
		}
#if COMPLETE_FRAMEWORK
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			base.Dispose( disposing );
		}
#endif
		#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.CodesButton = new System.Windows.Forms.Button();
			this.EventLabel = new System.Windows.Forms.Label();
			this.EventTextBox = new System.Windows.Forms.TextBox();
			this.LengthLabel = new System.Windows.Forms.Label();
			this.LengthTextBox = new System.Windows.Forms.TextBox();
			this.TimeLabel = new System.Windows.Forms.Label();
			this.TimeTextBox = new System.Windows.Forms.TextBox();
			this.SourceLabel = new System.Windows.Forms.Label();
			this.SourceTextBox = new System.Windows.Forms.TextBox();
			this.TypeLabel = new System.Windows.Forms.Label();
			this.TypeTextBox = new System.Windows.Forms.TextBox();
			this.DataLabel = new System.Windows.Forms.Label();
			this.DataTextBox = new System.Windows.Forms.TextBox();
			this.CloseButton = new System.Windows.Forms.Button();
			this.ParamsButton = new System.Windows.Forms.Button();
			this.ViewButton = new System.Windows.Forms.Button();
			this.ScanButton = new System.Windows.Forms.Button();
			this.AboutButton = new System.Windows.Forms.Button();
            this.SuspendLayout();
			// 
			// CodesButton
			// 
			this.CodesButton.Location = new System.Drawing.Point(8, 240);
            this.CodesButton.Name = "CodesButton";
			this.CodesButton.Size = new System.Drawing.Size(64, 25);
            this.CodesButton.TabIndex = 3;
			this.CodesButton.Text = "Codes";
			this.CodesButton.Click += new System.EventHandler(this.CodesButton_Click);
            this.CodesButton.KeyDown += new System.Windows.Forms.KeyEventHandler(this.CodesButton_KeyDown);
			// 
			// EventLabel
			// 
			this.EventLabel.Location = new System.Drawing.Point(8, 176);
            this.EventLabel.Name = "EventLabel";
			this.EventLabel.Size = new System.Drawing.Size(72, 21);
			this.EventLabel.Text = "Event:";
			// 
			// EventTextBox
			// 
			this.EventTextBox.Location = new System.Drawing.Point(80, 176);
            this.EventTextBox.Name = "EventTextBox";
            this.EventTextBox.Size = new System.Drawing.Size(152, 23);
            this.EventTextBox.TabIndex = 11;
			// 
			// LengthLabel
			// 
			this.LengthLabel.Location = new System.Drawing.Point(8, 144);
            this.LengthLabel.Name = "LengthLabel";
			this.LengthLabel.Size = new System.Drawing.Size(72, 21);
			this.LengthLabel.Text = "Length:";
			// 
			// LengthTextBox
			// 
			this.LengthTextBox.Location = new System.Drawing.Point(80, 144);
            this.LengthTextBox.Name = "LengthTextBox";
            this.LengthTextBox.Size = new System.Drawing.Size(152, 23);
            this.LengthTextBox.TabIndex = 10;
			// 
			// TimeLabel
			// 
			this.TimeLabel.Location = new System.Drawing.Point(8, 112);
            this.TimeLabel.Name = "TimeLabel";
			this.TimeLabel.Size = new System.Drawing.Size(72, 21);
			this.TimeLabel.Text = "Time:";
			// 
			// TimeTextBox
			// 
			this.TimeTextBox.Location = new System.Drawing.Point(80, 112);
            this.TimeTextBox.Name = "TimeTextBox";
            this.TimeTextBox.Size = new System.Drawing.Size(152, 23);
            this.TimeTextBox.TabIndex = 9;
			// 
			// SourceLabel
			// 
			this.SourceLabel.Location = new System.Drawing.Point(8, 80);
            this.SourceLabel.Name = "SourceLabel";
			this.SourceLabel.Size = new System.Drawing.Size(72, 21);
			this.SourceLabel.Text = "Source:";
			// 
			// SourceTextBox
			// 
			this.SourceTextBox.Location = new System.Drawing.Point(80, 80);
            this.SourceTextBox.Name = "SourceTextBox";
            this.SourceTextBox.Size = new System.Drawing.Size(152, 23);
            this.SourceTextBox.TabIndex = 8;
			// 
			// TypeLabel
			// 
			this.TypeLabel.Location = new System.Drawing.Point(8, 48);
            this.TypeLabel.Name = "TypeLabel";
			this.TypeLabel.Size = new System.Drawing.Size(72, 21);
			this.TypeLabel.Text = "Type:";
			// 
			// TypeTextBox
			// 
			this.TypeTextBox.Location = new System.Drawing.Point(80, 48);
            this.TypeTextBox.Name = "TypeTextBox";
            this.TypeTextBox.Size = new System.Drawing.Size(152, 23);
            this.TypeTextBox.TabIndex = 7;
			// 
			// DataLabel
			// 
			this.DataLabel.Location = new System.Drawing.Point(8, 16);
            this.DataLabel.Name = "DataLabel";
			this.DataLabel.Size = new System.Drawing.Size(72, 21);
			this.DataLabel.Text = "Data:";
			// 
			// DataTextBox
			// 
			this.DataTextBox.Location = new System.Drawing.Point(80, 16);
            this.DataTextBox.Name = "DataTextBox";
            this.DataTextBox.Size = new System.Drawing.Size(152, 23);
            this.DataTextBox.TabIndex = 6;
			// 
			// CloseButton
			// 
			this.CloseButton.Location = new System.Drawing.Point(168, 240);
            this.CloseButton.Name = "CloseButton";
			this.CloseButton.Size = new System.Drawing.Size(64, 25);
            this.CloseButton.TabIndex = 5;
			this.CloseButton.Text = "Exit";
			this.CloseButton.Click += new System.EventHandler(this.CloseButton_Click);
            this.CloseButton.KeyDown += new System.Windows.Forms.KeyEventHandler(this.CloseButton_KeyDown);
			// 
			// ParamsButton
			// 
			this.ParamsButton.Location = new System.Drawing.Point(88, 240);
            this.ParamsButton.Name = "ParamsButton";
			this.ParamsButton.Size = new System.Drawing.Size(64, 25);
            this.ParamsButton.TabIndex = 4;
			this.ParamsButton.Text = "Params";
			this.ParamsButton.Click += new System.EventHandler(this.ParamsButton_Click);
            this.ParamsButton.KeyDown += new System.Windows.Forms.KeyEventHandler(this.ParamsButton_KeyDown);
			// 
			// ViewButton
			// 
			this.ViewButton.Location = new System.Drawing.Point(168, 208);
            this.ViewButton.Name = "ViewButton";
			this.ViewButton.Size = new System.Drawing.Size(64, 25);
            this.ViewButton.TabIndex = 2;
			this.ViewButton.Text = "View";
			this.ViewButton.Click += new System.EventHandler(this.ViewButton_Click);
            this.ViewButton.KeyDown += new System.Windows.Forms.KeyEventHandler(this.ViewButton_KeyDown);
			// 
			// ScanButton
			// 
			this.ScanButton.Location = new System.Drawing.Point(8, 208);
            this.ScanButton.Name = "ScanButton";
			this.ScanButton.Size = new System.Drawing.Size(64, 25);
            this.ScanButton.TabIndex = 0;
			this.ScanButton.Text = "Scan";
			this.ScanButton.Click += new System.EventHandler(this.ScanButton_Click);
            this.ScanButton.KeyDown += new System.Windows.Forms.KeyEventHandler(this.ScanButton_KeyDown);
			// 
			// AboutButton
			// 
			this.AboutButton.Location = new System.Drawing.Point(88, 208);
            this.AboutButton.Name = "AboutButton";
			this.AboutButton.Size = new System.Drawing.Size(64, 25);
            this.AboutButton.TabIndex = 1;
			this.AboutButton.Text = "About";
			this.AboutButton.Click += new System.EventHandler(this.AboutButton_Click);
            this.AboutButton.KeyDown += new System.Windows.Forms.KeyEventHandler(this.AboutButton_KeyDown);
			// 
			// ReaderForm
			// 
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Inherit;
			this.BackColor = System.Drawing.Color.White;
			this.ClientSize = new System.Drawing.Size(240, 270);
			this.Controls.Add(this.ScanButton);
			this.Controls.Add(this.ViewButton);
			this.Controls.Add(this.ParamsButton);
			this.Controls.Add(this.CodesButton);
			this.Controls.Add(this.EventLabel);
			this.Controls.Add(this.EventTextBox);
			this.Controls.Add(this.LengthLabel);
			this.Controls.Add(this.LengthTextBox);
			this.Controls.Add(this.TimeLabel);
			this.Controls.Add(this.TimeTextBox);
			this.Controls.Add(this.SourceLabel);
			this.Controls.Add(this.SourceTextBox);
			this.Controls.Add(this.TypeLabel);
			this.Controls.Add(this.TypeTextBox);
			this.Controls.Add(this.DataLabel);
			this.Controls.Add(this.DataTextBox);
			this.Controls.Add(this.CloseButton);
			this.Controls.Add(this.AboutButton);
            this.Name = "ReaderForm";
			this.Text = "CS_ScanSample2";
            this.KeyUp += new System.Windows.Forms.KeyEventHandler(this.ReaderForm_KeyUp);
			this.Load += new System.EventHandler(this.ReaderForm_Load);
            this.ResumeLayout(false);

		}
		#endregion

		private Symbol.Barcode.Reader MyReader = null;
		private Symbol.Barcode.ReaderData MyReaderData = null;
		private System.EventHandler MyReadNotifyHandler = null;
        private System.EventHandler MyStatusNotifyHandler = null;
        private System.EventHandler MyActivatedEventHandler = null;
        private System.EventHandler MyDeactivatedEventHandler = null;
		private object[] MyReadParamsList = null;
		private int CurrentReadParamIndex = 0;

		/// <summary>
        /// This function scales down the given Form & its child controls in order to
        /// make them completely viewable, based on the screen width & height.
        /// </summary>
        public static void ScaleDown(System.Windows.Forms.Form frm)
        {
            int scrWidth = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Width;
            int scrHeight = System.Windows.Forms.Screen.PrimaryScreen.WorkingArea.Height;
            if (scrWidth < frm.Width)
                foreach (System.Windows.Forms.Control cntrl in frm.Controls)
                {
                    cntrl.Width = ((cntrl.Width) * (scrWidth)) / (frm.Width);
                    cntrl.Left = ((cntrl.Left) * (scrWidth)) / (frm.Width);
                }
            if (scrHeight < frm.Height)
                foreach (System.Windows.Forms.Control cntrl in frm.Controls)
                {
                    cntrl.Height = ((cntrl.Height) * (scrHeight)) / (frm.Height);
                    cntrl.Top = ((cntrl.Top) * (scrHeight)) / (frm.Height);
                }

        }

        /// <summary>
		/// The main entry point for the application.
		/// </summary>
		static void Main() 
		{
            ReaderForm rf = new ReaderForm();
            ScaleDown(rf);
            Application.Run(rf);
		}

		/// <summary>
		/// Occurs before the form is displayed for the first time.
		/// </summary>
		private void ReaderForm_Load(object sender, System.EventArgs e)
		{
			// Initialize the Reader
			if ( this.InitReader() )
			{
				// Start a read on the reader
				this.StartStatus();
				this.StartRead();
			}
			else
			{
				// If not, close this form
				this.Close();
				return;
			}

			// Add MainMenu if Pocket PC
			if(Symbol.Win32.PlatformType == "PocketPC")
			{
				this.Menu = new MainMenu();
			}
		}

		/// <summary>
		/// Initialize the reader.
		/// </summary>
		private bool InitReader()
		{
			// If reader is already present then fail initialize
			if ( this.MyReader != null )
			{
				return false;
			}

			try
			{
				// Get selected device from user
				Symbol.Generic.Device MyDevice =
					Symbol.StandardForms.SelectDevice.Select(
					Symbol.Barcode.Device.Title,
					Symbol.Barcode.Device.AvailableDevices);

				if ( MyDevice == null )
				{
					MessageBox.Show("No Device Selected","SelectDevice");
					return false;
				}

				// Create the reader, based on selected device
				this.MyReader = new Symbol.Barcode.Reader(MyDevice);

				// Create reader data
				this.MyReaderData = new Symbol.Barcode.ReaderData(
					Symbol.Barcode.ReaderDataTypes.Text,
					Symbol.Barcode.ReaderDataLengths.MaximumLabel);

				// Enable the Reader
				this.MyReader.Actions.Enable();

				// Initialize Reader parameters
				this.InitReadParams();
			
				// create event handlers
				this.MyReadNotifyHandler = new EventHandler(MyReader_ReadNotify);
				this.MyStatusNotifyHandler = new EventHandler(MyReader_StatusNotify);


                MyActivatedEventHandler = new EventHandler(ReaderForm_Activated);
                MyDeactivatedEventHandler = new EventHandler(ReaderForm_Deactivate);
                this.Activated += MyActivatedEventHandler;
                this.Deactivate += MyDeactivatedEventHandler;

			}
			catch ( Symbol.Exceptions.InvalidRequestException ex )
			{
				MessageBox.Show("InitReader\n"+"Invalid Operation\n"+ex.Message);
				return false;
			}
			catch ( Symbol.Exceptions.OperationFailureException ex )
			{
				MessageBox.Show("InitReader\n"+"Operation Failure"+ex.Message);
				return false;
			}
			catch ( Symbol.Exceptions.UnimplementedFunctionException ex )
			{
				MessageBox.Show("InitReader\n"+"Unimplemented Function"+ex.Message);
				return false;
			}

			return true;
		}