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dLSoft

Active Barcode Components

By dLSoft

This manual was produced using ComponentOne Doc-To-Help.™

dLSoft Active Barcode Components Contents v

Contents

Active Barcode Components 1

Introduction ............................................................................................................................... 1 The Universal controls ................................................................................................ 1 The 1D controls ........................................................................................................... 1 The 2D controls ........................................................................................................... 2 Registering the control ................................................................................................ 2

Using with CreateObject ............................................................................................................ 3 Distributing Programs using Active Barcode Component ......................................................... 3 Using in VB6 and .NET ............................................................................................................. 4

Adding the control to a Visual Basic form .................................................................. 4 VB.NET and C# .......................................................................................................... 5 Setting and retrieving property values ......................................................................... 5 Creating a barcode Picture within a program .............................................................. 5

Using in Delphi .......................................................................................................................... 6 Importing the component into a Delphi Development System .................................... 6 Using the component within Delphi ............................................................................ 7

Using in C++ Builder................................................................................................................. 7 Importing into a C++ Builder Development System ................................................... 7 Using the component within C++Builder .................................................................... 8

Using in a Container .................................................................................................................. 8 Using in Access ....................................................................................................................... 11 Using in Word.......................................................................................................................... 12 Setting the image size .............................................................................................................. 13 A Note on Metafile pictures ..................................................................................................... 13 1D Component Reference ........................................................................................................ 15

Summary of Properties and Methods ........................................................................ 15 Required properties ................................................................................................... 17 Information properties ............................................................................................... 25 Methods ..................................................................................................................... 26 Events ........................................................................................................................ 29

Error codes ............................................................................................................................... 29 2D Components ....................................................................................................................... 31

2D-Barcode Property pages ....................................................................................... 31 Setting the image size ................................................................................................ 33 Binary data ................................................................................................................ 33

2D Component Reference ........................................................................................................ 34 Summary of Properties and Methods ........................................................................ 34 Required properties ................................................................................................... 36 Information properties ............................................................................................... 45 Methods ..................................................................................................................... 46 Events ........................................................................................................................ 48

Error codes ............................................................................................................................... 49 Notes ........................................................................................................................................ 49

Macro sequences ....................................................................................................... 49 Deutschepost and PostMatrix .................................................................................... 49 GS1 Encoding ............................................................................................................ 49

vi Contents dLSoft Active Barcode Components

Truncated PDF417 symbols ...................................................................................... 50 Fixed size symbols .................................................................................................... 50 Unicode encoding ...................................................................................................... 50

Visual FoxPro .......................................................................................................................... 51 On VFP Forms ........................................................................................................... 51 Placing the control on the form ................................................................................. 51 On VFP reports .......................................................................................................... 51 Placing a picture control on the report ....................................................................... 52 Specify the picture source ......................................................................................... 52

Index 55

dLSoft Active Barcode Components Active Barcode Components 1

Active Barcode Components

Introduction Active Barcode Components (version 7) are Active-X/Automation Controls that allow barcode images to be created

within the user’s own software. A barcode image may be displayed on screen, printed on a printer, saved to a disk file, or

passed to the Windows clipboard for incorporation into another Windows application.

Although primarily designed for Microsoft's Visual Basic 6 and Visual Basic for Applications (VBA), Active-Barcode

Components may be employed with other Active-X-enabled systems, such as the Visual Studio or Delphi development

environments. Examples provided in this manual are based on Visual Basic 6, Visual Studio 2005 or later, and Office

2003 or later.

Users should note that the encoding calculations are performed when the component’s image is created, by being used,

accessed or copied. Information properties (such as PictureWidth) are not available until the image has been created.

The current release includes 32 bit and 64 bit components. Both components are fully Unicode compatible. The 64 bit

component cannot be used on a 32 bit system. The source code sample provided for the 64 bit component is a Visual

Studio 2005 WinForms application.

Active Barcode Components are available either as the Universal package, which includes 1D and 2D controls that may

be licenced separately, or as individual controls for specific groupd of 1D or 2D barcodes.

The Universal controls

Active Barcode Component Universal This package contains two controls which may be installed/licenced separately:

Axbarcode.ocx – for most common 1D barcode types (over 60 types supported; see the Barcodes HELP file for the

complete list).

A2barcode.ocx – for Aztec, Databar, Datamatrix, Maxicode, PDF417 and QR Code symbols. .

The 1D controls

There are two 1D controls in the Active Barcode Components (version 7) family, one for common industrial barcodes

and one for common retail barcode types. The controls are:

Active Barcode Component Code Standard

Abc39.ocx – for Code 39, Extended Code 39, Code 93, Extended Code 93, Code 128, Interleaved 2 of 5 and Matrix 2 of

5 barcodes

2 Active Barcode Components dLSoft Active Barcode Components

Active Barcode Component GS1

AbcEAN.ocx – for EAN-13, EAN-14, EAN-8, UPC-A, UPC-E, ISBN, ISSN, ISMN, GS1-128 and ITF-14 and SSCC

(Serial Shipping Container Code) barcodes

With the exception of the CodeType property (which specifies the type of barcode to be generated) all controls share the

same control properties, and in this manual all control are discussed using the name of the Active Barcode Control

Universal 1D component. The values of the CodeType property for the individual controls is described under Properties.

The 2D controls

There are several 2D barcode controls in the Active Barcode Components family, one for each of the most popular 2D

barcode types. The controls are:

Active Barcode Component Aztec

AbcAZT.ocx – for Aztec barcodes

Active Barcode Component Databar

AbcRSS.ocx – for Databar (formerly RSS) barcodes

Active Barcode Component DataMatrix

AbcDMAT.ocx – for square and rectangular DataMatrix barcodes

Active Barcode Component PDF417

AbcPDF.ocx – for PDF417 and Micro-PDF417 barcodes

Active Barcode Component QR AbcQR.ocx – for QR Code barcodes

Registering the control

Before an Active-X component may be used within a particular Windows installation it must be registered with the

Windows System Registry. The Setup program that installs the product on your system provides automatic one-time

registration. However, if you use the component on another system registration may NOT be automatic. Many container

applications (Visual Basic, MS Office, etc.) offer facilities to register components by displaying a dialog and browsing

for the component's file - axbarcode.ocx. As a last resort, the component may be registered manually be executing the

following commands from within a command prompt:

To register the component

C:\path\regsvr32.exe C:\path\AXBARCODE.OCX.

Similarly the component may be un-registered using:

C:\path\regsvr32.exe C:\path\AXBARCODE.OCX -u.

If the component is moved or upgraded ir must be re-registered.

Once registered the component may be used within Visual Basic 6 (and other environments). The Active Barcode

Component may be included on Visual Basic's Toolbar by checking the

dLSoft 1D Barcode control

entry in the Custom Controls dialog accessible on the Tools menu. The OCX then appears as an icon on the toolbar.

Note that regsvr32.exe is used to register 32 bit or 64 bit components.


Using with CreateObject While the components can be added to applications at design-time (as described in the sections that follow) they may

also be created at run-time using CreateObject.

A simple example is shown here for a VB6 application consisting of a form containing a PictureBox:

Public abc As Object

Private Sub Form_Load()

Set abc = CreateObject("A2BARCODE.A2barcodeCtrl.4")

abc.CodeType = 1

abc.Xunit = 20

abc.Caption = "Hello World"

Picture1.Picture = abc.Picture

End Sub

When the form loads the abc object is created, some of its properties are specified, then the resulting barcode picture is

placed in the PictureBox Picture1.

The string in the CreateObject function is the Class name of the component. The Table below shows the class names for

the Active Barcode Component classes.

Active Barcode component Universal (2D) A2BARCODE.A2barcodeCtrl.4

Active Barcode component Universal (1D) Axbarcode.Control.4

Active Barcode component Aztec ABCAZT.AbcaztCtrl.4

Active Barcode component Databar ABCRSS.AbcrssCtrl.4

Active Barcode component Datamatrix ABCDMAT.AbcdmatCtrl.4

Active Barcode component PDF417 ABCPDF.AbcpdfCtrl.4

Active Barcode component QR Code ABCQR.AbcqrCtrl.4

Active Barcode component Standard ABC39.Abc39Ctrl.4

Active Barcode component GS1 ABCEAN.AbceanCtrl.4

Objects created this way may have their properties set in code or by providing a call to one of the components methods,

such as

Abc.ShowProps

Distributing Programs using Active Barcode Component

Any program using one of the Active Barcode Components must have access to the component in OCX file (e.g.

AXBARCODE.OCX). No other files are required by the control, although the target computer must has a suitable

version of the operating system's OLE system files installed (OLEAUT32.DLL on Windows XP). Any OLE enabled

software, such as Microsoft Office, will have installed these files.

Single user versions of these products are licensed for use only on a single computer.

Developer versions of the OCX run-time file (e.g. AXBARCODE.OCX) may be distributed Royalty-free for up to

10,000 copies. The Design time licence may NOT be distributed.


Using in VB6 and .NET

Adding the control to a Visual Basic form

To add an Active Barcode Component control to a Visual Basic 6 form, select Components from the VB Project menu. If

dLSoft 1D Barcode control module is displayed in the list of available controls, then ensure that it is checked. If it does

not appear in the list user the Browse button to locate it in its installation directory (or in Windows System or System32),

then check its name in the list. Once checked, an icon representing the component will appear in the toolbox.

The controls appear in the list of available controls as follows:

Active Barcode Component control name

Universal 1D component dLSoft Barcode 1D control

Standard dLSoft Barcode Std control

GS1 dLSoft Barcode GS1 control

Aztex dLSoft Aztec control

Datamatrix dLSoft Datamatrix control

Databar dLSoft Databar control

Maxicode dLSoft Maxicode control

PDF417 dLSoft PDF417 control

QR Code dLSoft QR Code control

Universal 2D component dLSoft Barcode 2D control

Clicking on the Active Barcode Component’s icon in the toolbox causes the cursor to change to a cross. Positioning the

cross on a Visual Basic form, holding down the left mouse button and dragging the cursor down and to the left, then

releasing the mouse button, causes a rectangle to be drawn on the form. An image of a (default) barcode will be shown

within this rectangle. You may wish to use this image of the component. Alternatively you may hide the component (by

setting its Visible property to false) and use the components methods and properties to create an image that is placed

elsewhere on the form - as in the sample Visual Basic program that is supplied with the component and uses code of the

form:

Axbarcode1.ImageHeight = i

Axbarcode1.ImageWidth = j

Axbarcode1.Xunit = 0

Axbarcode1.CodeType = type

Axbarcode1.Caption = Text

Image1.Picture = Axbarcode1.Picture

A single Visual Basic Form may contain any number of Active Barcode Components. The first to be added will be called

Axbarcode1, the second Axbarcode2, and so on; the names may be changed by the user by modifying the Name property

within the Visual Basic Properties box.

Alternatively an array of controls may be created using the Index property.


VB.NET and C#

The control may be added to the Visual Studio.NET Toolbox by right clicking on the Toolbox and selecting Customise

Toolbox from the pop-up menu displayed, then checking the control in the list presented. The control will then appear as

an icon on the Toolbox. For new applications we recommend the dBarcode.NET components which are managed code

components specifically designed for use with .NET and considerably more efficient in that environment than active-X

controls.

Setting and retrieving property values

The Active Barcode Component may be operated entirely by setting or retrieving Property values using the Basic

language.

Clicking on the Active Barcode Component control on the form when VB's Properties box is displayed will show the

current settings for component's available properties. Most of these may be edited using the Properties box, or may have

their values set from within the user's program by statements of the kind

Axbarcode1.Source="12345"

Active Barcode Component properties that are set AFTER a Picture is created may be retrieved within user's programs

by statements of the kind:

x=Axbarcode1.ErrorCode

Creating a barcode Picture within a program

Active Barcode Component produces its barcode image as a Windows metafile. This metafile is displayed directly in the

area you create for the component - unless you set the Axbarcode.Visible property to FALSE.

To create a printable Picture object containing the barcode within a program the following steps are required:

1. Set those properties that Active Barcode Component requires to generate the barcode, the minimum of which are

Axbarcode1.CodeType - specifies the barcode type required

Axbarcode1.Caption - specifies the characters which make up

the code

2. Allow the component's image to be displayed on the form (if required).

OR

Copy the components Picture property to an image on the form, eg.

If Axbarcode1.ErrorCode = 0 Then

Image1.Picture = Axbarcode1.Picture

3. Printing the Barcode on the Printer

To print the barcode image on the printer use the PaintPicture method of the Printer object, eg.

Printer.ScaleMode = 6 ' sets printer scale to mm

Printer.PaintPicture Axbarcode1.Picture, 20, 20, Axbarcode1.PictureWidth, Axbarcode1.PictureHeight

Printer.NewPage

Printer.EndDoc


4. Printing from VB.NET or C#

Printing from Managed code is accomplished using the PrintDocument control from the Visual Studio.NET ToolBox.

Add the control to your application, then use it as illustrated below; in this example only the barcode image is printed.

Private Sub print1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles print1.Click

Try

AddHandler PrintDocument1.PrintPage, AddressOf Me.PrintDocument1_PrintPage

PrintDocument1.Print()

Catch ex As Exception

MessageBox.Show("An error occurred while printing", _

ex.ToString())

End Try

End Sub

Private Sub PrintDocument1_PrintPage(ByVal sender As System.Object, ByVal e As

System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage

Dim newImage As Image = Axbarcode1.Picture

Dim x As Integer

Dim y As Integer

x = Axbarcode1.PictureWidth ' in mm

y = Axbarcode1.PictureHeight ' in mm

Dim ulCorner As New Point(50, 50) ‘ set position on page

Dim urCorner As New Point(x + 50, 50)

Dim llCorner As New Point(50, 50 + y)

Dim destPara As Point() = {ulCorner, urCorner, llCorner}

e.Graphics.PageUnit = GraphicsUnit.Millimeter

e.Graphics.DrawImage(newImage, destPara)

' Indicate that this is the last page to print.

e.HasMorePages = False

End Sub

Using in Delphi Active Barcode Components (like most Active-X controls) can be used within Delphi, but dLSoft recommends the

dBarcode DLLs for use with Delphi as these products include Delphi Components derived from TImage.

Importing the component into a Delphi Development System

To start using the Active Barcode Component in the Delphi IDE follow these steps:

From Delphi's Component menu choose Import ActiveX Control

Select dLSoft 1D Barcode control from the list of installed controls.

Push the Install button. You can then choose to import the control into an existing package, or create a new package.

When installation has finished, the Active Barcode Component icon will be available from the ActiveX toolbar.

To place the package on a Delphi form simply select the Active Barcode Component icon from the ActiveX toolbar and

use the cursor to draw a position for it on the form. The Taxbarcode object is then available for use.


Using the component within Delphi

A single Delphi Form may contain any number of Active Barcode Components. The first to be added will be called

Axbarcode1, the second Axbarcode2, and so on; the names may be changed by the user by modifying the Name property

within the Delphi Object Inspector.

Each component added will be visible on the form. You may wish to use this image of the component. Alternatively you

may hide the component (by setting its Visible property to false) and use the components methods and properties to

create an image that is copied elsewhere on the form.

The principal steps involved in using a barcode image within Delphi are as follows:

1. Set those properties which Active Barcode Component requires to generate the barcode, the minimum of which are


Axbarcode1.Caption - specifies the characters which make up the code



To print the barcode image on the printer StretchDraw the picture graphic to the Printer object, again using the

PictureHeight and PictureWidth parameters to scale the picture to the Printer's canvas, eg.

{set the target rectangle for drawing on the printer}

{change from mm to pixels}

ii:=(Axbarcode1. PictureWidth*pScalex) div 100;

jj:=(Axbarcode1. PictureHeight*pScaley) div 100;

Rect.Left:=200;

Rect.Top:=200;

Rect.Right:=Rect.Left+ii;

Rect.Bottom:=Rect.Top+jj;

Printer.BeginDoc;

Printer.Canvas.StretchDraw(Rect, Axbarcode1.Picture.Graphic);

Printer.EndDoc;

where pScalex and pScaley are for converting the picture units to printer pixels.

Using in C++ Builder

Importing into a C++ Builder Development System

To start using the Active Barcode Component in the C++ Builder IDE follow these steps:

1. From Builder's Component menu choose Import ActiveX Control

2. Select dLSoft 1D Barcode control from the list of installed controls.

3. Push the Install button. You can then choose to import the control into an existing package, or create a new package.

4. When installation has finished, the Active Barcode Component icon will be available from the ActiveX toolbar.

To place the package on a Builder form simply select the Active Barcode Component icon from the ActiveX toolbar and

use the cursor to draw a position for it on the form. The Taxbarcode object is then available for use.


Using the component within C++Builder

A single Builder Form may contain any number of Active Barcode Components. The first to be added will be called

Axbarcode1, the second Axbarcode2, and so on; the user may change the names by modifying the Name property within

the Builder Object Inspector.

Each component added will be visible on the form. You may wish to use this image of the component. Alternatively you

may hide the component (by setting its Visible property to false) and use the components methods and properties to

create an image, which is copied elsewhere on the form.

The principal steps involved in using a barcode image within Builder are as follows:

1. Set those properties which Active Barcode Component requires to generate the barcode, the minimum of which are


Axbarcode1.Caption - specifies the characters which make up the code



To print the barcode image on the printer StretchDraw the picture graphic to the Printer object, again using the

PictureHeight and PictureWidth parameters to scale the picture to the Printer's canvas, eg.

//set the target rectangle for drawing on the printer

//change from mm to pixels

Prntr = Printer();

i=GetDeviceCaps((Prntr->Handle),LOGPIXELSX);

pScalex=(1000*i) / 254; //100 * pixels per mm

i=GetDeviceCaps((Prntr->Handle),LOGPIXELSY);

pScaley=(1000*i) / 254; //100 * pixels per mm

ft=AxbarcodeProxy1->PictureWidth;

ii=int((ft*pScalex)/ 100.0);

ft=AxbarcodeProxy1->PictureHeight;

jj=int((ft*pScaley) /100.0);

Rect.Left=200;

Rect.Top=200;

Rect.Right=Rect.Left+ii;

Rect.Bottom=Rect.Top+jj;

Prntr->BeginDoc();

Prntr->Canvas->StretchDraw(Rect, AxbarcodeProxy1->Picture->Graphic);

Prntr->EndDoc();

where pScalex and pScaley are for converting the picture units to printer pixels.

Using in a Container Active Barcode Components may be inserted into Container programs (such as Word) generally by selecting Insert

Object from the EDIT or INSERT menus and choosing dLSoft 1D Barcode control from the list of options presented.

The properties of the barcode image may be set by selecting the barcode and right-clicking on it and choosing Properties

from the pop-up menu displayed, either double-clicking on it; alternatively by summoning its Property Pages dialog from

the Edit – dLSoft 1D Barcode control Object menu item.

The Property Pages dialog provides a tabbed dialog box containing three pages.

The General Page provides the user with the opportunity to set the Codetype, the Code value (the Caption), and the target

height and width. Checkboxes are provided to allow the Nominal size to be specified (valid only for barcodes which


have a nominal size), and for the check digit to be calculated automatically (for those codes which have check digits. An

X unit box allows the width of the barcode to be calculated by the control, using the X unit size The X unit is the width

of the thinnest bar (in mils - 0.001 inches, not mm). If X is provided as 0 then the width of the barcode is determined by

the content of the width box.

Details of the properties are given in the Reference section.

The Options page enables most of the remaining properties to be specified, either through checkboxes or by specifying

numerical values in the edit boxes.

The Font/Colours page allows the foreground (bars and text) colour and the background colour to be selected from the

system colours available, and the Font properties (for text under the barcode image) to be selected from the normal

Windows Font dialog


.


Note that the size of the font selected will be correctly reproduced only when the metafile is displayed at the size

specified in the target height and width boxes on the Code page. The metafiles image created if fully resizable, so

changing the size of the barcode image will also change the actual size of the font used for the text.

Each Property page contains an OK button which, if pushed causes the current contents of all the pages to be used in re-

creating the barcode image. The pages also contain a Cancel button that may be used to close the Property pages dialog

and discard any changes made.

Using in Access Microsoft Access is a database that holds data in tables. When an Active Barcode Component is added to an Access

Form or Report as an ActiveX control, the component's Properties list allows the user to select one of the Table fields as

a Source of the components data - ie the data to appear in the barcode.

The Record Source may be selected from a drop-down list in the form or report's properties list, and the barcode's

Control Source may be selected from the drop down list in the component's properties list. All other properties (code

type, size, font, etc.) can be selected from the other entries in the Access Properties list at design time.

This allows barcode creation to be fully automatic for every record in a database.

Of course, a barcode image that is the same on every record may also be created - by ensuring that the Control Source

entry on the component's properties list is empty, and the required data is entered for the Caption property.

A sample Access database is included with the distribution


Active Barcode Component properties for a barcode image on a form or report may also be set at run-time using Visual

Basic module code to modify the control's properties.

Using in Word There are two different ways of using the Active Barcode Component within Microsoft Word.

1. The component may be inserted as an Object - by choosing Object from the Insert menu, or

2. The component may be added as an ActiveX control from the Control Toolbox.

The component behaves in rather different ways in these two cases.

When inserted as an object the component behaves in just the same way as when inserted into any other container. Right-

clicking on the barcode image and selecting Properties from the pop-up menu brings up the property pages that allow the

barcode properties to be specified. (See Using Active Barcode Component in a Container for details.)


When added as an ActiveX Control the component is programmable from within Word's Visual Basic Editor. A number

of simple macros are included in the ABC1.DOC sample supplied with Active 2D Barcode Component. While the

sample macros are run from the Tools - Macros menu, single keystroke shortcuts can be added by choosing Tools -

Customise and then pushing the Keyboard button. Scroll the categories list down to Macros and then choose a key to be

used to initiate each macro. That's all there is to it.

Of course the macros supplied are rather rudimentary. Almost anything can be done by setting properties and calling

methods.

Setting the image size Active Barcode Components creates a barcode image at a size specified by the user – either using the ImageHeight and

ImageWidth properties, or using the ImageHeight and Xunit properties. However, the metafile image is fully resizeable

by the user - so can be displayed or printed at a size other than that originally created.

There are three ways of specifying the size at which the image is created:

1. For a limited number of barcode types there is a Nominal size (ie. A size specified by the standards body responsible

for that barcode type). EAN, GS1, UPC and ITF barcodes have nominal sizes. In general it is recommended that these

barcode types be reproduced either at the nominal size or within a fairly narrow range of sizes around nominal (typically

80 - 120% of nominal). These barcode types may have their size specified by setting the NominalSize property. After the

image has been created the PictureWidth and PictureHeight properties contain the actual width and height of the barcode

image.

2. Any barcode type may have the image size specified by setting the xunit property to the width of the narrowest

element in the barcode (narrowbar) when the NominalSize property is set to 0. Xunit values are specified in Mils. In this

case the initial setting of the ImageWidth property is ignored. After the image has been created the PictureWidth and

PictureHeight properties contain the actual width and height of the barcode picture.

3. Any barcode type may have the image size specified by setting the ImageWidth and ImageHeight properties when the

NominalSize property is set to 0 and the xunit property is set to 0.

A Note on Metafile pictures The picture images placed on the clipboard by dLSoft's Active Barcode Component's CopyImage method are

ANISOTROPIC metafiles. This means that they can be resized within applications (usually by dragging a corner).

While the barcode bars can be resized over very wide ranges, any text included within the image may not resize as

expected. In general changing the height of the image by resizing within another application will change the fontsize

used to render the text. Changing the width of the image within another application may cause the position of any text

under the barcode to change.

The use of TrueType fonts is recommended to prevent unusual effects caused by resizing of text. Furthermore, the use of

Enhanced Metafiles has the advantage of producing images in which the fonts scale more smoothly than they do in

standard metafiles.

The CopyImage method produces both standard metafile and enhanced metafile pictures on the clipboard. In most case

an application that is to receive the picture by pasting will choose the most appropriate picture.

The SaveImage method (when used with a wmf file extension) produces a standard metafile image.


1D Component Reference

Summary of Properties and Methods

Active Barcode Component properties fall into two categories - those that are required to specify characteristics of the

barcode image, and those that provide information about the barcode.

The most important properties and methods are outlined below, and followed by sections in which the properties and

methods are defined in detail.

Component properties.

The properties that can be set to generate an image

Axbarcode1.AutoParity specifies whether any check digits are calculated automatically

Axbarcode1.BackColor the colour behind the bars

Axbarcode1.BarRatio specifies the ratio of wide/narrow bar (times ten) for some barcode types

Axbarcode1.BarReduce specifies the percentage reduction in bar thickness (useful for allowing for ink spread in wet-

ink printing processes.

Axbarcode1.BearerBarThickness specifies the thickness of bearer bars for those barcodes that may have bearer bars

Axbarcode1.BorderSize specifies the thickness of any border around the image (in points)

Axbarcode1.Caption specifies the characters that make up the code

Axbarcode1.CharSpacing the percentage of the barcode width over which the text under the barcode should be spread

out.

Axbarcode1.CodeType specifies the barcode type required

Axbarcode1.ExtendBearers Allows bearer bars to extend into light margins.

Axbarcode1.ForeColor the colour of the bars and any text under the bars

Axbarcode1.Font The font used to render any text under the barcode

Axbarcode1.FontSize, FontName, FontBold, FontItalic are alternative ways of specifying font characteristics

Axbarcode1.ImageHeight required target height of barcode image (in units determined by the setting of ScaleMode)

Axbarcode1.ImageWidth required target width of barcode image (in units determined by the setting of ScaleMode)

Axbarcode1.JustifyText specifies the text justification for human readable text under the barcode

Axbarcode1.MarginSize specifies the size of the light margins

Axbarcode1.NominalSize specifies a percentage of the barcode's standard size at which the image should be created. If

specified the calculated value overrides the ImageHeight and ImageWidth parameters.

Axbarcode1.Orientation specifies the orientation of the barcode image

Axbarcode1.PictureHeight the height of barcode picture generated (in units determined by the setting of ScaleMode)

Axbarcode1.PictureWidth the width of barcode picture generated (in units determined by the setting of ScaleMode)

Axbarcode1.ScaleMode specifies the units of ImageHeight and ImageWidth and PictureHeight and PictureWidth

parameters (default is 6 = mm)

Axbarcode1.ShowBearerBars determines whether (or how many) bearer bars are displayed

Axbarcode1.ShowText specifies that the text content of the barcode should be displayed under the bars


Axbarcode.ShowCheckDigit specifies whether any automatic check digit is displayed (for those barcode type which

permit this)

Axbarcode1.ShowLightMargin specifies whether light margin indicators should be displayed for those barcode types

that support these

Axbarcode1.TargetHdpi Target device horizontal resolution (in dpi) for bitmap based images

Axbarcode1.TargetVdpi Target device vertical resolution (in dpi) for bitmap based images

Axbarcode1.xunit specifies the thickness of each barcode element in mils

Many of these properties have default values (see the reference section), so do not require changing if you can make do

with the default values. The properties that must be set for you to obtain a barcode are

Axbarcode1.CodeType specifies the barcode type required

Axbarcode1.Caption specifies the characters that make up the code

A typical example of setting these properties is:

Axbarcode1.CodeType=8 rem code type is 8 for Code-39 type barcode

Axbarcode1.Caption="123456" rem code is 123456

Methods of using the barcode image

To paint the control's Picture on the form use the PaintPicture method, or draw your own bars using the Printers Line

method. Using the PaintPicture method the code will look like this:

If Axbarcode1.ErrorCode = 0 Then

Form1.PaintPicture Axbarcode1.Picture, 20, 20, i, j

where the (20,20) specifies the coordinates on the form of the top left-hand corner of the barcode image, and i and j

represent the required width and height of the image respectively.

The control's Picture may be passed to the clipboard using

I = Axbarcode1.CopyImage()

The Visual Basic Picture object contains a metafile image of the generated barcode. In the event of an error in barcode

image generation the image is empty, and the ErrorCode property is set to a non-zero value.

The control's Picture may be printed using the PaintPicture method of the Printer object, eg.


Printer.PaintPicture Axbarcode1.Picture, 20, 20, Axbarcode1. PictureWidth, Axbarcode1. PictureHeight

Printer.NewPage

Printer.EndDoc

Where the (20,20) refers to the top, left coordinates of the barcode image on the printer's page.

Note that the PrintForm method may also be used, although on some systems this may show images of unsuitable

resolution.

For printing under VB.NET or from C# see the example in Creating a barcode Picture under Using Active Barcode

Component in VB or .NET.

The image created by the Active Barcode Component may also be saved in a file in a graphics format using the

SaveImage(filename) method. The image type must be specified by using the permitted filename extensions - .wmf,

.bmp, .eps, .pcx, png .or .gif.


Required properties

The following properties are required - although all are provided with default values.

AllowRightProps

Type BOOL

Default: FALSE

Allowed values: TRUE (allows the property pages to be displayed on a right mouse button click within the controls

visible area)

FALSE (property pages not displayed)

AutoParity

Type: BOOL

Default: FALSE

Allowed values: FALSE (checkdigit characters not calculated)

TRUE (checkdigit characters calculated and appended to code for appropriate code types)

BackColor

Type: LONG

Default: &H00FFFFFF&

Allowed values: 0 (black)

to &H00FFFFFF& (white)

Sets the colour of the image background. This value may be over-ridden by the Transparent property.

BarRatio

Type: SHORT

Default 25

Allowed values: 20 - 30

This setting allows some barcode types to have the Wide bar/Narrow bar ratio modified. The value is 10 times the ratio,

so the default ratio is 2.5

Applies mainly to Code 39 and Interleaved 2 of 5 barcodes.

BarReduce

Type: SHORT

Default: 0 the thickness of each line drawn on the barcode image is reduced by this percentage amount. This

property may be used to compensate for ink spreading during wet-ink printing. If a negative value is used the widths of

the bars are reduced by the percentage of the thinnest bar.

Allowed values: 0 - 50 (%) 100-150 (%)


Values greater than 100 may be used to increase bar widths. If a negative value is used the widths of the bars are

increased by the percentage of the thinnest bar.

BearerBarThickness

Type: SHORT

Default: 0


Allows the thickness of bearer bars for those barcode which support bearers to be set in units of the current ScaleMode.

Note that for most barcode types the number of bearer bars displayed depends on the setting of the ShowBearerBars

property. If ShowBearerBars is True the bars are displayed above and below the barcode. If ShowBearerBars is False

then only a single bearer bar is displayed above the barcode.

BorderSize

Type: SHORT

Default: 0

Allowed values: 0 (no border)

to 255 in points

Caption

Type: BSTR

Default: "12345"

Allowed values: Any text string.

Note: only text strings recognised as valid barcodes will result in a barcode picture. Illegal text string will cause an

ErrorCode value to be set.

The Caption should be the last property set - as setting this property causes the barcode image to be recreated.

CharSpacing

Type: SHORT

Default: 0

Allowed values 0 and 10 - 100

The percentage of the barcode width, which the text under the barcode will take up. A value of 0 causes the characters to

be displayed with their "normal" spacing. It is the users responsibility to ensure that the value provided is sensible in

comparison with the fontsize.

CodeType

Type: SHORT

For Active Barcode Control Universal

Default: 8


Allowed values: The range of values defined in the barcode types table in the Barcodes HELP file.

For all other controls

Default: 0

Allowed values:

Active Barcode Control Code Standard

0 – Code 39

1 – Extended Code 39

2 – Code 93

3 – Extended Code 93

4 – Code 128

5 – Code 128 subtype A

6 – Code 128 subtype B

7 – Interleaved 2 of 5

8 – Matrix 2 of 5

Note: Code 128 subtype C is an automatic selection.

Active Barcode Control GS1

0 – EAN-13 / JAN-13 etc.

1 – EAN-8

2 – EAN-13 + 2 digits


4 – UPC-A

5 – UPC-E

6 – UPC-A + 2 digits

7 – UPC-A + 5 digits



10 – UPC-E + 2 digits

11 – UPC-E + 5 digits

12 – EAN-14

13 – UPC-E0

14 – UPC-E1

15 – ITF-14

16 – GS1-128 (formerly EAN/UCC 128)

17 – SSCC (Serial Shipping Container Code)

18 – Databar Omnidirectional

19 – Databar Truncated

20 – Databar Limited

21 – Databar Expanded

ExtendBearers

Type: BOOL

Default: FALSE

When TRUE allows bearer bars to extend into light margins. When FALSE bearer bars cover the bars only.

Extra1

Type: BOOL

Default FALSE


These additional properties are not normally used. However, they do provide additional functions for a limited number of

specific barcode types. See Barcodes HELP for details.

Extra2

Type: BOOL

Default FALSE

These additional properties are not normally used. However, they do provide additional functions for a limited number of

specific barcode types. See Barcodes HELP for details.

Font

Type: FONT

Default: Arial 10 point

Allowed values: Any accessible TrueType font.

Font details may be specified using the font parameters, eg.

Axbarcode1.FontName="Arial"

Axbarcode1.FontSize=8

ForeColor

Type: LONG

Default: 0



Set the colour of the image foreground, i.e. the bars and text colour.

GapToText

Type: SHORT

Default: 0 A value given as a percentage of the text font point size by which text is raised within its bounding

rectangle.

Allowed values: 0-100 (%)

Note: For most applications this value should be set to 0.

ImageHeight

Type: FLOAT

Default: 20 mm

Allowed values: 5 mm (minimum)

to form height in units determined by the setting of ScaleMode

The target height of the barcode image. Note that this is the target size of the resizable metafile image. The font height

will be as requested if the metafile is reproduced at this size. If the metafile is resized to say double this value then the

font will also be increase in absolute size. Also this value will be placed in the metafile header for those applications that

can reproduce metafiles at their specified size.


ImageWidth

Type: FLOAT

Default: 25 mm

Allowed values: 0.1 - 30,000

to form width in units determined by the setting of ScaleMode

The target width of the barcode image. Note that this is the target size of the resizable metafile. The font height will be as

requested if the metafile is reproduced at this size. If the metafile is resized to say double this value then the font will

also be increase in absolute size. Also this value will be placed in the metafile header for those applications that can

reproduce metafiles at their specified size. If the Xunit property is non-zero then the ImageWidth property is over-ridden

by a value calculated from the value of Xunit and the number of elements in the barcode.

JustifyText

Type: SHORT

Default: 0

Allowed values 0,1 and 2

JustifyText sets the justification of any text displayed under the barcode. A value of 0 centres the text, 1 gives left

justification and 2 gives right justification. Justification is to the outside of the light margins, so no justification can be

used when light margin indicators are displayed.

Left

Type: SHORT

Default: value determined when user adds control to a form.

Note this is the Left position of the Control's rectangle.

MarginSize

Type: FLOAT

Default: 0


The MarginSize property sets the Light Margin space on either side of a barcode image. The units are the units specified

by the current ScaleMode.

NominalSize

Type: SHORT

Default: 0 When this property is set to a value between 50 and 200 the width of the image created will be scaled

to generate that percentage of the barcodes Standard. When this property is 0 no scaling is applied.

Allowed values: 0 or 50-200

Note that this feature is relevant only for some EAN, UPC and ITF code types. It is ignored for barcode types that do not

have a standard size.


Orientation

Type: SHORT

Default: 0 The value of this parameter determines the orientation of the barcode image created.

Allowed values: 0 = normal orientation

1 = image rotated left by 90 degrees (clockwise)

2 = image rotated right by 90 degrees (anti-clockwise)

3 = image inverted.

Note that the rotation of text is only supported by TrueType and other rotatable fonts. Note also that some applications

do not correctly handle metafiles that contain rotated text.

SaveImageFile

Type: LPCTSTR

No default value.

When set the current barcode image is saved to the specified filename, exactly as when using the SaveImage method.

Eg. Axbarcode1.SaveFileImage="c:\barimage.wmf"

A fully qualified filename is required, and the extension is taken to determine the type of graphic file saved. See the

SaveImage method for details.

ScaleMode

Type SHORT

Default: 6

The scaling mode applied to values of ImageWidth and ImageHeight values.

Allowed values:

0 - Windows HIMETRIC (0.01 mm)

1 - Twips

2 - Points

3 - Windows TEXT

4 - Windows HIENGLISH (0.001 inches)

5 - Inches

6 - millimetres

7 – centimetres

ShowBearerBars

Type: BOOL

Default: FALSE

Allowed values: TRUE or FALSE

When TRUE causes bearer bars to be draw above and below the barcode. When FALSE no bearer bars are drawn if the

BearerBarThickness property is zero. Otherwise a FALSE setting causing only a single bearer bar to be displayed above

the barcode.


ShowCheckDigit

Type: BOOL

Default: 0 When set to 1 this property causes the any automatically calculated check digit to be included in the

any text displayed along with the barcode. When set to 0 the check digit is not displayed.

Note that this property has no effect on those codetypes for which the checkdigit display is mandatory (including EAN

and UPC codes).

ShowLightMargins

Type: BOOL

Default: FALSE A value of TRUE causes the light margin indicators to be displayed. For some EAN barcodes there are

recommended ways for the margin indicators to be shown on the image, and the Prefix code and checkdigit for UPC-A

and UPC-E codetype to be displayed in the light margins. A value of FALSE prevents the display of the light margin

indicators.

Note that for ITF files specifying LightMargins=1 causes the border bars between the extremes of the bearer bars to be

drawn. The required light margin distances are always included in ITF codes.

ShowText

Type: BOOL

Default: TRUE

Allowed values FALSE (text version of the code is NOT included in the barcode image)

TRUE (text version of the code IS included in the barcode image)

TargetHdpi

Type: SHORT

Default: 600


Target device (eg. Printer) horizontal resolution (in dpi) for bitmap based images

TargetVdpi

Type: SHORT

Default: 600



Top

Type: SHORT



Note this is the Top position available for the Control's icon. It is not related to the barcode picture. In most case the

Control will be set to invisible, so this parameter may be ignored.

TransparentBackground

Type: BOOL

Default: FALSE

Allowed values TRUE or FALSE. When set to TRUE this property causes the barcode image to be created on a

transparent background (ie. and background colour is ignored). The property should be set to 1 only by users who are

confident that the final barcode image will be produced on a background that does not interfere with barcode scanning.

Units

Type: BSTR

Returns the current units in words, as set using the ScaleMode parameter.

UseEnhanced

Type: BOOL

Default: TRUE

Allowed values: TRUE and FLASE

When TRUE, an Enhanced metafile image is used to draw the barcode image on the visible control. When FALSE a

standard Windows Metafile is used.

Width

Type: SHORT


Note this is the Width available for the Control's icon. It is not related to the barcode picture. In most case the Control

will be set to invisible, so this parameter may be ignored.

xunit

Type: SHORT

Default: 0

Allowed range: 10 - 255

The xunit property may be used to specify the width (in Mils) of the smallest element in the barcode.

Note that setting this property to a value other than 0 causes the control to resize itself to a width calculated from the

number of X units in the barcodes. Using values smaller than 8 will produce a barcode image, but that image will not

meet standard specifications and may not scan.


Information properties

CodeName

Returns: the barcode name of the current barcode type as an LPSTR string.

CodeNameB

Returns: the barcode name of the current barcode type as a BSTR string.

ErrorCode

Type: SHORT

Returns a value representing the error code if a valid barcode image cannot be created. Otherwise returns 0.

Read only. Do not set this property.

HasParity

Type BOOL

Default: returns TRUE for code types that allow the inclusion of a checksum, otherwise returns FALSE.

Note that this property returns FALSE for GS1-128 and Code 128 in spite of the fact that these codes define checksum

digits. This is because these codes cannot be used without the check digits and these digits are always calculated by the

control and are not under user control. Check digits for these codes are not displayed.

Read only. Do not set this property. The value of this parameter can be determined following the setting of code type.

Nrequired

Type: SHORT

Returns: 0 or the number of characters required for a valid barcode of the current type. 0 indicates any number

of characters permitted.

Read only. Do not set this property. The value of this parameter can be determined following the setting of the code type

The value returned depends on the current setting for AutoParity - ie. the value specifies the number of characters that

need to be provided by the user.

Pattern

Type: BSTR

Returns: A Visual Basic string containing a pattern of 0s and 1s, where 0 represents a space of minimum width

and a 1 represents a bar of minimum width. Within Visual Basic the 1s may be used to indicate that a bar (filled

rectangle) must be drawn.



Picture

Type: PICTURE

Returns: The Picture of metafile type returned by the Active Barcode Component. This contains the image of

the barcode and (if enabled) its text.


PictureHeight

Type: FLOAT

Returns: the height of the picture generated (in units determined by the setting of ScaleMode)


Note that PictureHeight differs from ImageHeight if the barcode image is rotated left or right.

PictureWidth

Type: FLOAT

Returns: the width of the picture generated (in units determined by the setting of ScaleMode)


Note that PictureWidth differs from ImageWidth if the barcode image is rotated left or right, or if the PictureWidth is

calculated from an Xunit value.

String2

Type: BSTR

Returns the Caption property plus any additional characters generated as check digits.


Methods

CopyBitmap()

This method causes a barcode image to be created and copied to the Windows clipboard. CopyImage copies the barcode

image as a Windows metafile, and CopyBitmap copies the image as a bitmap. Both functions return 0 if an error occurs

and one if the copy is successful.

CopyImage()





GetError()

Type: BSTR

Syntax: GetError(LPINT Errorcode)

The GetError(Errorcode) method returns the text (a BSTR string) of the error message corresponding to the Errorcode

value. So a string variable may be filled with the error message using

X$=Axbarcode1.GetError(Axbarcode1.ErrorCode)

GetTypeName()

Type: SHORT

Syntax: GetTypeName(int, BSTR)

Returns: the barcode name of the current barcode type as a BSTR string in the calling parameter.

May be determined after setting the code type (eg. For filling a list box). Return a NULL string (zero length) for invalid

code type.

GetTypeNameB()

Type: BSTR

Syntax: GetTypeNameB(int)



code type.

Refresh()

This method causes the barcode calculation to be repeated and the Image (if being shown) to be redrawn.

SaveImage(filename)

When called with a valid filename (including extension), this method copies the barcode image in a graphics format to a

named disk file. The filename parameter must contain the fully qualified filename of the file that will receive the image.

The specified directory path must exist. If the file exists it will be overwritten; if it does not exist it will be created. A

return value of 0 indicates an error.

The extension of the filename specifies the type of file to be created.

The following filename extensions are supported by SaveImage():

.WMF = Windows metafile image.

.BMP = monochrome (1 bpp) Bitmap image.

.BM8 = 8 bpp colour Bitmap image – NOTE: file will be saved with .BMP extension.

.DIB = Device Independent Bitmap image.

.EPS = encapsulated PostScript file,

.PCX = Paintbrush format bitmap,

.PNG = Portable Network Graphic image


.GIF = Compuserve graphic.]

Note that the Property SaveImageFile may also be set to a filename to initiate the saving of a graphic file.

ShowProps()

Displays the property pages for the control.


Events

The following events are exported by the control and may be used by the container:

DblClick() – mouse double click

KeyDown (short KeyCode, short Shift) – a key pressed down; KeyCode identifies the keycode and Shift represents the

state of the shift key

KeyUp (short KeyCode, short Shift) – a key released

MouseDown (short Button, short Shift, OLE_XPOS_PIXELS x, OLE_XPOS_PIXELS y) – a mouse button is pressed,

Button identifies the mouse button, Shift represents the state of the shift key, a and y identify the location of mouse

cursor.

MouseUp (short Button, short Shift, OLE_XPOS_PIXELS x, OLE_XPOS_PIXELS y) – a mouse button is released.

Error codes The Property Axbarcode1.ErrorCode AFTER Axbarcode1.Caption has been set may contain an error code if the

component was unable to generate a barcode Picture. The property value will be one of the following:

0 No error

1 Wrong code length

2 Unrecognised code type

3 Wrong add-on code length

4 Illegal character in code

5 Error in embedded code

6 Generated line width less than 1 unit

7 Invalid text font

8 Invalid device context

9 Invalid Caption property

10 Error writing disk file


2D Components Active 2D-Barcode Components are Active-X/Automation Controls that allow 2D-barcode images to be created within

the user’s own software. A barcode image may be displayed on screen, printed on a printer, save to a disk file, or passed

to the Windows clipboard for incorporation into another Windows application.

Although primarily designed for Microsoft's Visual Basic 6 and VBA, Active-Barcode Component may be employed

with other Active-X-enabled applications, such as Delphi or the Visual Basic for Applications provided in Microsoft

Office 2003 or later and later.

Users should note that the encoding calculations are performed when the component’s image is created, by being used,

accessed or copied. Information properties (such as PictureWidth) are not available until the image has been created.

2D-Barcode Property pages

Active 2D-Barcode Component may be inserted into Container programs (such as WordPad) generally by selecting

Insert Object from the EDIT or INSERT menus and choosing A2barcode Control from the list of options presented.

The properties of the barcode image may be set by selecting the barcode and either double-clicking on it, or by

summoning its Property Pages dialog from the Edit – A2barcode Control Object menu item.

The Property Pages dialog provides a tabbed dialog box containing four pages.

The Data page contains a text version of the data being supplied to the component to create the barcode.

If the data contains non-printable (or non-Windows) characters, then the display may be rather strange. Such data will

normally be passed in via programming rather than by using the Data window.

The General Page provides the user with the opportunity to set the Codetype, the Code value (the Caption), and the target

height and width. Checkboxes are provided to allow the Nominal size to be specified (valid only for barcodes which

have a nominal size), and for the check digit to be calculated automatically (for those codes which have check digits. An

X unit box allows the width of the barcode to be calculated by the control, using the X unit size The X unit is the width

of the thinnest bar (in mils – 0.001 inches, not mm). If X is provided as 0 then the width of the barcode is determined by

the content of the width box.

Some of the Active Barcode Components will include additional features on this property page.

Details of the properties are given in the Reference section.


The Appearance page enables most of the remaining properties to be specified, either through checkboxes, by entering a

border size in the edit box, or selecting a colour by pushing the foreground or background colour change button.


Each Property page contains an OK button which, if pushed causes the current contents of all the pages to be used in re-

creating the barcode image. The pages also contain a Cancel button that may be used to close the Property pages dialog

and discard any changes made.

Setting the image size

Active 2D-Barcode Component creates a barcode image at a size specified by the user. However, the metafile image is

fully resizable by the user – so can be displayed or printed at a size other than that originally created.

There are two ways of specifying the size at which the image is created:

1. Any of the supported barcode type may have the image size specified by setting the Xunit property to the width

of the narrowest element in the barcode (and, where relevant the HeightToWidth property). Xunit values are

specified in Mils. In this case the initial setting of the ImageWidth property is ignored. After the image has been

created the PictureWidth and PictureHeight properties contain the actual width and height of the barcode image.

2. Any barcode type may have the image size specified by setting the ImageWidth and ImageHeight properties

when the Xunit property is set to 0.

Binary data

Active 2D-Barcode Component can handle binary data, but special considerations arise when that data will contain

ASCII 0 (null) characters. The Caption property is treated as a C string – and so terminates at the first null character.

To send binary data containing ASCII 0 characters to the control one of two available Methods should be used:

SetByteStream(LPCTSTR lpstream, short nlength)

or

SetIntStream(short FAR* lpstream, short nlength)


In both cases the byte data is pointed to by the lpstream parameter, and the length of the data is specified in the nlength

parameter.

A Visual Basic routine for using binary data as a string of specified length is:

Private Sub Command1_Click()

Dim bts(1000) As Integer

x$ = String(372, vbNullChar)

n = Len(x$)

Open "data.dat" For Binary As #1 Len = 372

Get #1, , x$

Close #1

Call A2barcode1.SetByteStream(z$, n)

Image1.Picture = A2barcode1.Picture

End Sub

An alternative routine, in which the data is encoded in a integer array is:

Private Sub Command1_Click()

Dim bts(1000) As Integer

x$ = String(372, vbNullChar)

n = Len(x$)

Open "data.dat" For Binary As #1 Len = 372

Get #1, , x$

Close #1

For i = 1 To n

c$ = Mid$(x$, i, 1)

If (c$ = "") Then

j = 0

Else

j = Asc(c$)

End If

bts(i) = j

Next i

Call A2barcode1.SetIntStream(bts(1), n)

Image1.Picture = A2barcode1.Picture

End Sub

2D Component Reference

Summary of Properties and Methods

Active 2D-Barcode Component properties fall into two categories – those that are required to specify characteristics of

the barcode image, and those, which provide information about the barcode.


The most important properties and methods are outlined below, and followed by sections in which the properties and

methods are defined in detail.

Component properties.

The properties which can be set to generate an image

A2barcode1.BackColor the colour behind the bars

A2barcode1.BorderSize specifies the thickness of any border around the image (in points)

A2barcode1.Caption specifies the characters that make up the code

A2barcode1.CodeType specifies the barcode type required

A2barcode1.ForeColor the colour of the bars and any text under the bars

A2barcode1.HeightToWidth specifies the height to width ratio of bar for PDF417

A2barcode1.ImageHeight required target height of barcode image (in units determined by the setting of ScaleMode)

A2barcode1.ImageWidth required target width of barcode image (in units determined by the setting of ScaleMode)

A2barcode1.LineReduce specifies the percentage reduction in bar thickness (useful for allowing for ink spread in wet-

ink printing processes.

A2barcode1.ScaleMode specifies the units of ImageHeight, ImageWidth, PictureWidth and PictureHeight parameters

(default is 6 = mm)

Axbarcode1.TargetHdpi Target device horizontal resolution (in dpi) for bitmap based images

Axbarcode1.TargetVdpi Target device vertical resolution (in dpi) for bitmap based images

Many of these properties have default values (see the reference section), so do not require changing if you can make do

with the default values. The properties which must be set for you to obtain a barcode are

A2barcode1.CodeType specifies the barcode type required

A2barcode1.Caption specifies the characters, which make up the code

A typical example of setting these properties is:

A2barcode1.CodeType=2 rem code type is 2 for PDF417 type barcode

A2barcode1.Caption="123456" rem code is 123456

Methods of using the barcode image

To paint the control's Picture on the form use the PaintPicture method, or draw your own bars using the Printers Line

method. Using the PaintPicture method the code will look like this:

If A2barcode1.ErrorCode = 0 Then

Form1.PaintPicture A2barcode1.Picture, 20, 20, i, j

where the (20,20) specifies the coordinates on the form of the top left-hand corner of the barcode image, and i and j

represent the required width and height of the image respectively.

The control’s Picture may be passed to the clipboard using

I = A2barcode1.CopyImage()

The Visual Basic Picture object contains a metafile image of the generated barcode. In the event of an error in barcode

image generation the image is empty, and the ErrorCode property is set to a non-zero value;


The control's Picture may be printed from VB6 using the PaintPicture method of the Printer object, eg.


Printer.PaintPicture A2barcode1.Picture, 20, 20, A2barcode1. PictureWidth, A2barcode1. PictureHeight

Printer.NewPage

Printer.EndDoc

Where the (20,20) refers to the top, left coordinates of the barcode image on the printer's page.

Note that the PrintForm method may also be used, although on some systems this may show images of unsuitable

resolution.

For printing the image using VB.NET or C# see Creating a barcode picture under Using Active 2D Barcode Component

in VB & .NET

The image created by the Active 2D-Barcode Component may also be saved in a file in a graphics format using the

SaveImage(filename) method. The image type must be specified by using the permitted filename extensions - .wmf,

.bmp, .eps, .pcx, png, or .gif.

Required properties

The following properties are required – although all are provided with default values.

AllowRightProps

Type BOOL

Default: FALSE

Allowed values: TRUE (allows the property pages to be displayed on a right mouse button click within the controls

visible area)

FALSE (property pages not displayed)

Columns

Type: SHORT

Default: 1

This value specifies the number of column units used in generating the barcode for those barcode types that support

specified symbol sizes (Aztec (Full Range mode), Datamatrix, PDF417, QR Code or Databar (Expanded stacked)

barcodes). It is ignored for other barcode types.

For Aztec, Datamatrix and QR Code symbols the value determines the number of columns in the symbol. If the value is

zero or less than the smallest symbol that can hold the data then the number of columns is determined by the data and the

security level setting.

For Databar Expanded stacked symbols the value represents the width of the symbol in segment pairs.

For PDF417 symbols the value is the number of dataword columns that the control will attempt to fit the barcode image.

It is important to note that not all values are possible (for example PDF barcode must have at least 3 rows).

BackColor

Type: LONG


Default: &H00FFFFFF&



Sets the colour of the image background. This value may be over-ridden by the Transparent property.

BorderSize

Type: SHORT

Default: 0

Allowed values: 0 (no border)

to 255 in points

Caption

Type: BSTR

Default: "12345"

Allowed values: Any text string.

Note: only text strings recognised as valid barcodes will result in a barcode picture. Illegal text string will cause an

ErrorCode value to be set.

The Caption should be the last property set - as setting this property causes the barcode image to be recreated.

CodeType

Type: SHORT

Default: 0

Allowed values: For Active 2D-Barcode Universal the range of values defined in the

barcode types table below.

For Active Barcode Component PDF417 the allowed values are:

0 – PDF417 barcodes

1 – Micro PDF417 barcodes

For Active Barcode Component QR Code the allowed values are:

0 – QR Code barcodes

1 – Micro QR Code barcodes

For all other single barcode components the CodeType must be 0

For Active Barcode Component 2D Universal the CodeType values are:

Barcode CodeType

Aztec 0

DataMatrix 1

PDF417 2


MaxiCode 3

MicroPDF417 4

Databar (formerly RSS) 5

QR Code 6

Micro QR Code 7

If you plan to use a specific barcode type you should examine the notes in the Barcodes Help on that type before printing

any barcode images.

ForeColor

Type: LONG

Default: 0



Set the colour of the image foreground, i.e. the bar colour.

HeightToWidth

Type: SHORT

Default 3

Allowed values: 1 – 100

This setting allows the Height to Width ratio of the element used in PDF417 and Databar barcode construction to be

selected by the user. For PDF417 and MicroPDF barcode the value should be 2 – 5, while for Databar barcodes the value

should be 10 - 20.

Note that if the resizable barcode image is resized, then the actual height to width ratio which appear in the image will be

different from that specified by this parameter.

ImageHeight

Type: SHORT

Default: 30 mm

Allowed values: 5 (minimum)

to form height in units determined by the setting of ScaleMode

The target height of the barcode image. Note that this is the target size of the resizable metafile image in units set by the

ScaleMode property.

ImageWidth

Type: SHORT

Default: 30 mm


Allowed values: 0.1 – 30,000

to form width in units determined by the setting of ScaleMode

The target width of the barcode image. Note that this is the target size of the resizable metafile in units set by the

ScaleMode property.

Left

Type: SORT

Default: value determined when user adds a control to a form.

Note this is the Left position available for the Control's rectangle.

LineReduce

Type: SHORT

Default: 0 the thickness of each line drawn on the barcode image is reduced by this percentage amount. This

property may be used to compensate for ink spreading during wet-ink printing. If a negative value is used the widths of

the bars are reduced by the percentage of the thinnest bar.

Allowed values: 0 - 50 (%) 100-150 (%)

Values greater than 100 may be used to increase bar widths. If a negative value is used the widths of the bars are

increased by the percentage of the thinnest bar.

For MaxiCode targeted for laser printing we recommend a value of 12.

For Aztec, Datamatrix and QR Code symbols positive or negative values both apply a change equal to the percentage of

the size of a single element (ie. an X unit).

Orientation

Type: SHORT

Default: 0 The value of this parameter determines the orientation of the barcode image created.

Allowed values: 0 = normal orientation

1 = image rotated left by 90 degrees (clockwise)

2 = image rotated right by 90 degrees (anti-clockwise)

3 = image inverted.

4 = mirror image

Note that the rotation of text is only supported by TrueType and other rotatable fonts. Note also that some applications

do not correctly handle metafiles that contain rotated text.

Mirrored images of 2D barcodes will not in general be scannable. This facility should be used only where the barcode is

to be remirrored during the printing process.

SaveImageFile

Type: LPCTSTR

No default value.

When set the current barcode image is saved to the specified filename, exactly as when using the SaveImage method.

Eg. A2barcode1.SaveFileImage="c:\barimage.wmf"


A fully qualified filename is required, and the extension is taken to determine the type of graphic file saved. See the

SaveImage method for details.

ScaleMode

Type SHORT

Default: 6

The scaling mode applied to values of ImageWidth and ImageHeight values.

Allowed values:

0 - Windows HIMETRIC (0.01 mm)

1 - Twips

2 - Points

3 – Windows TEXT

4 – Windows HIENGLISH (0.001 inches)

5 - Inches

6 – millimetres

7 – centimetres

TargetHdpi

Type: SHORT

Default: 600



TargetVdpi

Type: SHORT

Default: 600



Top

Type: SHORT


Note this is the Top position available for the Control's icon. It is not related to the barcode picture. In most case the

Control will be set to invisible, so this parameter may be ignored.

Transparent

Type: BOOL

Default: FALSE


Allowed values TRUE or FALSE. When set to TRUE this property causes the barcode image to be created on a

transparent background (ie. and background colour is ignored). The property should be set to TRUE only by users who

are confident that the final barcode image will be produced on a background that does not interfere with barcode

scanning.

UseEnhanced

Type: BOOL

Default: TRUE

Allowed values: TRUE and FLASE

When TRUE, an Enhanced metafile image is used to draw the barcode image on the visible control. When FALSE a

standard Windows Metafile is used.

Width

Type: SHORT


Note this is the Width available for the Control's icon. It is not related to the barcode picture. In most case the Control

will be set to invisible, so this parameter may be ignored.

Xunit

Type: SHORT

Default: 0

Allowed range: 10 – 255

Setting this property to a value other than 0 causes the control to resize itself to a size calculated from the number of X

units in the barcodes (and, in the case of PDF417, from the height/width ratio). Using values smaller than 8 will produce

a barcode image, but that image will not meet standard specifications and may not scan.

Note that the units of this quantity are the industry standard mils. The units of this quantity are NOT affected by the

ScaleMode.

AztecFlag

Type: SHORT

Default: 0

Allowed range: 0

Despite its name the AztecFlag is not used just for Aztec Symbols in this version. In order to allow additional facilities to

be added without introducing incompatabilities with earlier version, this property is used for the following purpose:

For Aztec, Datamatrix, PDF417 and QR Code symbols setting bit 7 (ie decimal 128) of this flag forces the encoding

of Unicode within the symbol. This is useful for encoding non-western character sets within the symbols. It is NOT

necessary to set this flag for encoding Kanji mode QR symbols.

For PDF417 symbols setting bit1 of the AztecFlag (ie to 2) generates Truncated PDF417 symbols. Truncated

symbols are recommended only for in-house applications because the truncation, while producing a smaller barcode,

does remove the error checking characters and stop characters at the end of each row.


For Datamatrix symbols setting bit 9 (decimal 512) forces the encoding to be in Base256 mode as required by some

applications by Deutschepost. Setting bit 6 (ie decimal 64) forces the creation of a Deutsche Post PostMatrix symbol

(with two additional vertical bars).

AztecMenu

Type: SHORT

Default: 0

Allowed range: 0,2

Despite its name the AztecMenu is not used for Aztec Symbols in this version. However, in order to allow additional

facilities to be added without introducing incompatibilities with earlier version, this property is used for the following

purpose:

In the 2D Universal, QR Code and Datamatrix components this property is used to control the encoding. If the property

is 2 then the Caption property is scanned for the presence of GS1 Application Identifiers, brackets are removed and the

result is encoded using GS1 Datamatrix or GS1 QR Code encoding rules. If the property is 0 then industry standard

encoding is used.

Note that if the first data character in a Datamatrix datastream is FNC1 (ASCII 232) then this has the same effect as

setting the AztecMenu property to 2.

SecurityLevel

Type: SHORT

Default: 0

Allowed range: Varies with barcode type

For Aztec, Datamatrix, QR and PDF allowed values see the Barcode Types section. For Maxicode barcodes this property

is ignored. For DATABAR Expanded barcodes the value is used as the Linkage.

Mode

Type: SHORT

Default: 0

Allowed range: Varies with barcode type

Note that setting this property to a value other than 0 causes the control to create a barcode that starts in a mode other

than automatic.

The allowed values are shown in the tables below.

For Aztec

Mode value Aztec mode

0 Normal

1 Compact

2 Full range

3 Rune

For DataMatrix


Mode value DataMatrix type

0 Auto Square

1 Auto Rectangular

2 ASCII Square

3 ASCII Rectangular

4 C40 Square

5 C40 Rectangular

6 Text Square

7 Text Rectangular

8 X12 Square

9 X12 Rectangular

10 EDIFACT Square

11 EDIFACT Rectangular

12 Base 256 Square

13 Base 256 Rectangular

For Databar

Mode value Databar type

0 Omnidirectional

1 Truncated

2 Limited

3 Stacked

4 Stacked Omnidirectional

5 Expanded

6 Expanded Stacked

For PDF417

Mode value PDF417 Mode

0 Exc - Alpha

1 Exc – Lower case

2 Exc – Mixed

3 Exc - Punctuation

4 Binary/ASCII plus

5 Numeric

For MaxiCode

Mode Value MaxiCode Mode


0 obsolete, not supported

1 obsolete, not supported

2 Mode 2 (Structured Carrier Message –

Numeric Postal Code)

3 Mode 3 (Structured Carrier Message –

Alphanumeric Postal Code)

4 Mode 4 – Standard Symbol (SEC)

5 Mode 5 – Full EEC Symbol

6 Mode 6 – Reader Program (SEC)

For QR Code

Mode value QR mode

0 Automatic

1 Alphanumeric

2 Byte

3 Kanji*

*Kanji characters are not detected in automatic mode. To encode Kanji the Kanji mode must be selected.

FixSize

Type: BOOL

Default: FALSE

Allowed range: TRUE/FALSE

When TRUE allows the size of the control to change to reflect the size calculated from a specified Xunit value. When

FALSE the control size remains fixed, and the barcode image expands or contracts to fill the control.

Scale

Type: REAL (float)

Default: 100.0

Read only

Return the scaling factor between internal units (HIMETRIC) and the coordinates used for ImageHeight and

ImageWidth as specified by the ScaleMode setting.

ReverseVideo

Type: BOOL

Default: FALSE

Allowed range: TRUE/FALSE

Note that setting this property to TRUE causes the image to be displayed in Reverse Video (i.e. White bars on a black

background).


Information properties

CodeName

Returns: the barcode name of the current barcode type as an LPSTR string.

CodeNameB


ErrorCode

Type: SHORT

Returns a value representing the error code if a valid barcode image cannot be created. Otherwise returns 0.


PatternString

Type: BSTR

Note: NOT applicable to Maxicode or DATABAR barcodes.

A pattern of characters representing the bars and spaces in the barcode image, with each row in barcode image being

terminated by a linefeed [CHR(10)] character.

For the matrix barcode types Aztec and DataMatrix a ‘1’ (CHR(49) represent a bar and a ‘0’ (CHR(48)) represents a

space. These patterns include the finder patterns.

For the stacked barcode types PDF417 and MicroPDF417 the pattern string characters represent the alternating bars and

spaces, with the value of each character representing the length (ie. Number of elements) of that type. Thus initial

characters ‘821’ would represent a bar of width 8 units, followed by a space of width 2 units, followed by a bar of width

1 unit.


Picture

Type: PICTURE

Returns: The Picture of metafile type returned by the Active Barcode Component. This contains the image of

the barcode and (if enabled) its text.


PictureHeight

Type: FLOAT

Returns: the height of the picture generated (in units determined by the setting of ScaleMode)


Note that PictureHeight differs from ImageHeight if the barcode image is rotated left or right. This value will be placed

in the metafile header for those applications which can reproduce metafiles at their specified size.

PictureWidth

Type: FLOAT

Returns: the width of the picture generated (in units determined by the setting of ScaleMode)



Note that PictureWidth differs from ImageWidth if the barcode image is rotated left or right. This value will be placed in

the metafile header for those applications which can reproduce metafiles at their specified size.

Units

Type: BSTR

READ ONLY

Returns the current units in words, as set using the ScaleMode parameter.

Methods

CopyBitmap()




CopyImage()




GetError()

Type: BSTR

Syntax: GetError(LPINT errorcode)

The GetError(Errorcode) method returns the text (a BSTR string) of the error message corresponding to the Errorcode

value. So a string variable may be filled with the error message using

X$=Uniocx1.GetError(Uniocx.Errorcode)

GetModeName()

Type: BSTR

Syntax: GetModeName(LPINT mode)

Return the name of 2D mode for the barcode type. For example, DataMatrix barcodes have the mode name “Square” for

mode=0 and “Rectangular” for mode=1.

An invalid value in mode will return an empty string, so this method may be used for enumerating the available modes;

for example:

For i = 0 To 10

x$ = Aztocx1.GetModeName(i)

If (Len(x$) > 0) Then

Combomode.AddItem (x$)

Else

Exit For


End If

Next

GetMaxLevel()

Type: LONG

Syntax: GetMaxLevel(LPINT mode)

Returns the number of security levels valid for the mode. For example, Aztec in Normal mode can have 99 levels, but in

Compact mode has only 4.

GetTypeName()

Type: SHORT

Syntax: GetTypeName(int, BSTR)

Returns: the barcode name of the current barcode type as a BSTR string in the calling parameter.


code type.

GetTypeNameB()

Type: BSTR

Syntax: GetTypeName(int)



code type.

Refresh()

This method causes the barcode calculation to be repeated and the Image (if being shown) to be withdrawn.

SaveImage(filename)

When called with a valid filename (including extension), this method copies the barcode image to a named disk file. The

filename parameter must contain the fully qualified filename of the file which will receive the image. The specified

directory path must exist. If the file exists it will be overwritten; if it does not exist it will be created. A return value of 0

indicates an error.

The extension of the filename specifies the type of file to be created.

The following filename extensions are supported by SaveImage():

.WMF = Windows metafile image.

.BMP = monochrome (1 bpp) Bitmap image.

.BM8 = 8 bpp colour Bitmap image – NOTE: file will be saved with .BMP extension.

.DIB = Device Independent Bitmap image.

.EPS = encapsulated PostScript file,


.PCX = Paintbrush format bitmap,

.PNG = Portable Network Graphic image

.GIF = Compuserve graphic.]

Note that the Property SaveImageFile may also be set to a filename to initiate the saving of a graphic file.

SetByteStream()

This method makes the source of the barcode data the bytes stream lpstream of length nlength. The Caption property is

ignored once this method is called and any existing Caption string is set to Null.

This method is useful if binary data containing ASCII 0 characters is to be encoded into the barcode.

Declaration

void SetByteStream(LPCTSTR lpstream, short nlength)

SetIntStream()

This method makes the source of the barcode data the short integer array stream lpstream of length nlength. The Caption

property is ignored once this method is called and any existing Caption string is set to Null.

Note that each data byte is taken from the LO byte of each integer in the array.

This method is useful if binary data containing ASCII 0 characters is to be encoded into the barcode.

Declaration

void SetIntStream(short FAR* lpstream, short nlength)

ShowProps()

Displays the property pages for the control.

Events

The following events are exported by the control and may be used by the container:

DblClick() – mouse double click

KeyDown(short KeyCode, short Shift) – a key pressed down; KeyCode identifies the keycode and Shift represents the

state of the shift key

KeyUp(short KeyCode, short Shift) – a key released

MouseDown(short Button, short Shift, OLE_XPOS_PIXELS x, OLE_XPOS_PIXELS y) – a mouse button is pressed,

Button identifies the mouse button, Shift represents the state of the shift key, a and y identify the location of mouse

cursor.

MouseUp(short Button, short Shift, OLE_XPOS_PIXELS x, OLE_XPOS_PIXELS y) – a mouse button is released.


Error codes The Property A2barcode1.ErrorCode AFTER A2barcode1.Caption has been set, may contain an error code if the

component was unable to generate a barcode Picture. The property value will be one of the following:

0 No error

1 Wrong code length

2 Unrecognised code type

3 Invalid code data

4 Illegal character in code

5 Error in embedded code

6 Generated line width less than 1 unit

Notes

Macro sequences

Industry standard macro sequences may be used for DataMatrix, Maxicode and MicroPDF417 symbols, where the

sequence [)> will be recognised automatically.

Deutschepost and PostMatrix

Deutschepost Damatrix symbols for some applications are required to use Base256 encoding rather than the standard

ECC200. The DL_DEUTSCHEPOST bit of the flag variable (bit 9 = 512) forces Datamatrix symbols to be encoded in

this mode.

The PostMatrix variant of Datamatrix may be generated using the DL_POSTMATRIX bit of the flag variable (bit 6 =

64).

GS1 Encoding

Active Barcode Component 2D Universal Datamatrix and QR Code only

If the AztecMenu property is set to 2, the Caption string is scanned for GS1 Application Identifiers and encoded

according to the GS1 Datamatrix or GS1 QR Code specification.

GS1 encoding requires the Application Identifiers to be provided within brackets, eg. (80)12345678(10)123456 so that

the AIs can be identified.

Variable length AIs will have FNC1 characters inserted to terminate the AI and all brackets are removed from the

encoded data.

For Datamatrix symbols only the Caption string property may begin with an FNC1 character - ASCII 232 (è) to force

GS1 encoding; in this case it is not necessary to set the AztecMenu property.

During scanning FNC1 characters are replaced by ASCII values of 29.


Truncated PDF417 symbols

For PDF417 symbols setting the AztecFlag to 2 generates Truncated PDF417 symbols. Truncated symbols are

recommended only for in-house applications because the truncation, while producing a smaller barcode, does remove the

error checking characters and stop characters at the end of each row.

Fixed size symbols

The size of a symbol, expressed as number of columns (or dataword columns) rather than physical size, may be specified

for Aztec (Full range mode), Datamatrix, PDF417, QR Code and DATABAR symbols by using the techniques described

under the Columns property.

Unicode encoding

Setting bit 7 of the AztecFlag property for the Aztec, Datamatrix, PDF417, QR Code and 2D Universal (for the Aztec,

Datamatrix, PDF417, QR Code symbol types) components forces the component to encode that data as Unicode. Note

that it is not necessary to set this bit for QR Code Kanji mode.

This is primarily useful for non-western character sets, and should not be used when encoding western characters

because it will increase the size of the symbol.


Visual FoxPro

On VFP Forms

The Active Barcode Components may be added to VFP Forms in the same way as any other Active-X control.

Placing the control on the form

From the Form Controls toolbar select the "Active-X Control (OleControl)" icon.

Using the mouse with the left-button down draw a rectangle on the form where you wish the barcode to appear.

Release the mouse button and the Insert Object dialog appears.

Select the control you wish to use from the list of available controls and push the OK button.

Right-click on the control on the form and select “Properties” from the pop-up menu.

Locate the ControlSource property and set it to the desired data source (eg. table1.barcodedata)

Most other properties may be more conveniently set by right-clicking on the control and selecting "dLSoft Barcode

Control object"....."Properties" from the pop-up menu; this results in the display of the control property pages.

On VFP reports

To include a barcode image on a report it is necessary to create a field in the underlying database to hold the barcode

image for each record. This may be achieved by following the steps below then placing a picture control on the report

and specifying the source of the picture as the barcode image field.

Add a field to a table to hold the barcode image - so give it a suitable name, such as "barcode".

Set the field type to General


Placing a picture control on the report

From the Report Controls Toolbar select the icon for "Picture/OLE bound control"

Using the mouse with the left-button down draw a rectangle on the report where you wish the barcode to appear.

Release the mouse button and the Properties dialog appears.

set the Control source type to "General field name"

set the Control source to the field you created above (eg table1.barcode)

Click on OK to close the Properties dialog.

Specify the picture source

Right click on whitespace on the report

Select Data Environment from the pop-up menu - the Data Environment dialog appears.

Right click on the dialog's background and select Code from the pop-up menu.

A coding window appears.

Select the BeforeOpenTables procedure in the drop-down list at the top of the window.

Enter the following code into this window, being sure to set the ControlSource to the name you have chosen for the field

in the table that holds the image, and that you set the properties required of the barcode (see below in red).

tfrm = createobject("Form")

with tfrm

.AddObject("BarcodeCtrl","OLEBoundControl")

.BarcodeCtrl.ControlSource = "table1.barcode"

scan all

APPEND GENERAL table1.barcode CLASS ("A2BARCODE.A2barcodeCtrl.4")

.BarcodeCtrl.Refresh

&& specify the properties for this barcode

.BarcodeCtrl.Object.FixSize = -1

.BarcodeCtrl.Object.CodeType = 1

.BarcodeCtrl.Object.Xunit = 40

.BarcodeCtrl.Object.Caption=table1.barcodedata


endscan

go top in table1


endwith

release tfrm

The code shown above is for 2D barcodes from Active Barcode Component Universal. For barcodes from other

members of the Active Barcode Component family the CLASS should be the text specified in the right hand column of

the table below:

Active Barcode component Universal (2D) A2BARCODE.A2barcodeCtrl.4

Active Barcode component Universal (1D) Axbarcode.Control.4

Active Barcode component Aztec ABCAZT.AbcaztCtrl.4

Active Barcode component Databar ABCRSS.AbcrssCtrl.4


Active Barcode component Datamatrix ABCDMAT.AbcdmatCtrl.4

Active Barcode component PDF417 ABCPDF.AbcpdfCtrl.4

Active Barcode component QR Code ABCQR.AbcqrCtrl.4

Active Barcode component Standard ABC39.Abc39Ctrl.4

Active Barcode component GS1 ABCEAN.AbceanCtrl.4

That’s it. You are ready to preview the report.

dLSoft Active Barcode Components Index 55

Index

1

1D Component Reference 15

2

2D Component Reference 34

2D Components 31

2D-Barcode Property pages 31

A

A Note on Metafile pictures 13

Active Barcode Components 1

Adding the control to a Visual Basic form 4

AllowRightProps 17, 36

AutoParity 17

AztecFlag 41

AztecMenu 42

B

BackColor 17, 36

BarRatio 17

BarReduce 17

BearerBarThickness 18

Binary data 33

BorderSize 18, 37

C

Caption 18, 37

CharSpacing 18

CodeName 25, 45

CodeNameB 25, 45

CodeType 18, 37

Columns 36

Component properties. 15, 35

CopyBitmap() 26, 46

CopyImage() 26, 46

Creating a barcode Picture within a program 5

D

Deutschepost and PostMatrix 49

Distributing Programs using Active Barcode

Component 3

E

Error codes 29, 49

ErrorCode 25, 45

Events 29, 48

ExtendBearers 19

Extra1 19

Extra2 20

F

Fixed size symbols 50

FixSize 44

Font 20

ForeColor 20, 38

G

GapToText 20

GetError() 27, 46

GetMaxLevel() 47

GetModeName() 46

GetTypeName() 27, 47

GetTypeNameB() 27, 47

GS1 Encoding 49

H

HasParity 25

HeightToWidth 38

I

ImageHeight 20, 38

ImageWidth 21, 38

Importing into a C++ Builder Development System 7

Importing the component into a Delphi Development

System 6

Information properties 25, 45

Introduction 1

J

JustifyText 21

L

Left 21, 39

LineReduce 39

56 Index dLSoft Active Barcode Components

M

Macro sequences 49

MarginSize 21

Methods 26, 46

Methods of using the barcode image 16, 35

Mode 42

N

NominalSize 21

Notes 49

Nrequired 25

O

On VFP Forms 51

On VFP reports 51

Orientation 22, 39

P

Pattern 25

PatternString 45

Picture 26, 45

PictureHeight 26, 45

PictureWidth 26, 45

Placing a picture control on the report 52

Placing the control on the form 51

R

Refresh() 27, 47

Registering the control 2

Required properties 17, 36

ReverseVideo 44

S

SaveImage(filename) 27, 47

SaveImageFile 22, 39

Scale 44

ScaleMode 22, 40

SecurityLevel 42

SetByteStream() 48

SetIntStream() 48

Setting and retrieving property values 5

Setting the image size 13, 33

ShowBearerBars 22

ShowCheckDigit 23

ShowLightMargins 23

ShowProps() 28, 48

ShowText 23

Specify the picture source 52

String2 26

Summary of Properties and Methods 15, 34

T

TargetHdpi 23, 40

TargetVdpi 23, 40

The 1D controls 1

The 2D controls 2

The Universal controls 1

Top 23, 40

Transparent 40

TransparentBackground 24

Truncated PDF417 symbols 50

U

Unicode encoding 50

Units 24, 46

UseEnhanced 24, 41

Using in a Container 8

Using in Access 11

Using in C++ Builder 7

Using in Delphi 6

Using in VB6 and .NET 4

Using in Word 12

Using the component within C++Builder 8

Using the component within Delphi 7

Using with CreateObject 3

V

VB.NET and C# 5

Visual FoxPro 51

W

Width 24, 41

X

xunit 24, 41

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