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Posted 4 Mar 2006


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EAN-13 BarCode ActiveX Control Drawer

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4.70/5 (8 votes)
25 Jun 2007CPOL2 min read
An activeX control that draws any EAN-13 barcode

Screenshot - BarCodeAX.jpg


EAN-13, based upon the UPC-A standard, was implemented by the International Article Numbering Association (EAN) in Europe. This standard was implemented mostly because the UPC-A standard was not well-designed for international use. It was probably also implemented partly because no-one likes the U.S. to be in charge of anything, especially the Europeans.

Purpose of making it an ActiveX control

There was the need for some code to draw the EAN-13 barcode for an Oracle application. The solution came to be an ActiveX control that may be used anywhere it is registered on a computer, from any language and any environment.

EAN-13 code structure

A typical EAN-13 barcode looks something like this:

Screenshot - ean13-1.gif

Check the code for validity by the parity code, the 13th number

bool CEANBarCode::CheckCode()
    int Sum = 0;
    for(int i=2;i<=12;i+=2)
        Sum += GetAt(i) * 3;
    for(int i=1;i<=12;i+=2)
        Sum += GetAt(i);
        return true;
    return false;

Then how are the numbers of the code being drawn?

Any number is being represented by a constant binary representation that is translated into white bar for 1 and black bar for 0. This constant is used as-is for the left part when the parity is odd, as a complement for the right part, and as reverse-order for the complement of the left part for even parity code.

Then EAN-13 is very simple

Thanks to the great reference, Barcode Island, which made me understand it very easily and contain more details about EAN-13.

Registering the OCX

You can register the OCX by running the following command:

regsvr32 "c:\BarCode.ocx"

Replace the path with the original path of the OCX.

UnRegistering the OCX

Simply by writing the previous line, but with the parameter /u as follows:

regsvr32 /u "c:\BarCode.ocx"

About regsvr32

The Windows tool for registering any self-registered objects such as COM objects. For more information, run the command:



  • 4 March, 2006 -- Original version posted
  • 10 March, 2006 -- Updated
  • 25 June, 2007 -- Article edited and moved to the main article base


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


About the Author

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Egypt Egypt
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Comments and Discussions

QuestionEAN-13 BarCode and access Pin
Member 1226778616-Jan-16 4:33
MemberMember 1226778616-Jan-16 4:33 
QuestionHow should I use this control? Pin
MCGRADYV516-Jul-13 23:19
MemberMCGRADYV516-Jul-13 23:19 
I should use it just like any other controls in MFC? Could you please show me an example of how to using it in a project.
GeneralNice Control Pin
Ashutosh Phoujdar3-Jun-08 4:08
MemberAshutosh Phoujdar3-Jun-08 4:08 
GeneralError in code Pin
KL Chin8-Mar-06 19:48
MemberKL Chin8-Mar-06 19:48 
GeneralRe: Error in code Pin
Ahmad_Hashem10-Mar-06 5:28
MemberAhmad_Hashem10-Mar-06 5:28 

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