Printing bar codes

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Help / WLanguage / WLanguage functions / Standard functions / Print functions

Overview
Printing a bar code from a report
Printing a bar code in WLanguage

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Printing bar codes

Overview

WINDEV, WEBDEV and WINDEV Mobile allow you to print bar codes. You can use:

a "Bar code" control in a report.
iPrintBarCode in a print performed in WLanguage.

Printing a bar code from a report

The report editor proposes a "Bar code" control. The Bar Code control can be directly bound to an item in the data source of the report.

Bar Code controls can be configured in the description window ("Description" option on the context menu).

Different characteristics can be set according to the type of bar code:

strikethrough barcode: the last character of the barcode corresponds to a check digit.
extended barcode: the barcode value can contain all 128 characters of the ASCII code.
displaying (or not) the value of the bar code.
management of formatting.
management of control characters and management of character set.

Regardless of the type of bar code, you can also:

configure the size of the bar code.
configure the characteristics of the border.
manage the orientation of the bar code.

To print the bar code, assign the value of the bar code to the Bar Code control.

Special case: QR Code barcodes: default types
In a report, you can print a QR Code. Then, this QR will be decoded by an application that will propose a specific action according to the type of the QR Code.

The assignment mode of the Bar Code control depends on its type.

By default, the description window of the control in the report editor proposes 4 simple types:

a Text QR Code This type of QR Code associates a text with the barcode. To initialize this type of QR Code, all you have to do is assign it with a character string. For example:
```
CBA_QRCode = "je suis un simple texte"
```
a Web Link QR Code This type of QR Code can be used, for example, to open a site directly. To initialize this type of QR Code, all you have to do is assign it with a site address. For example:
```
CBA_QRCode = "http://www.pcsoft.fr"
```
a Phone number QR Code This type of QR Code can be used, for example, to call a Phone number directly. To initialize this type of QR Code, all you have to do is assign it with a phone number. For example:
```
CBA_QRCode = "010203040506"
```
a Email Address QR Code This type of QR Code can be used, for example, to obtain a contact's Email address. To initialize this type of QR Code, simply assign an email address to it. For example:
```
CBA_QRCode = "doc@pcsoft.fr"
```

Special case: QR Code barcodes: specific types
You can also print QR codes (SMS, contact, geographic position, etc.). In this case, the data must be assigned to the Bar Code control using the BarCode type.

You must:

Define a variable of type BarCode:
MonCodeBarres is BarCode
In the BarCode variable, specify the type of content of the QR Code (for example, for an SMS barcode):
MonCodeBarres.TypeCodeBarres = BC_QRCODE MonCodeBarres.TypeContenu = bcTypeSMS

Depending on the type of bar code, fill the corresponding element (see table below):

Type of content	Type of value (Content property)	Remark

bcTypeText	Character string	Example: "WINDEV is great!"
bcTypePhone	Character string	Exemple: "0612345678"
bcTypeSMS	Character string in the following format: <Number> + CR + <Message> If they are specified, the members of the SMS structure (SMS.Message and SMS.Number) will be automatically taken into account.	Example: "0612345678<CR>Text to send"
bcTypeURL	Character string	Example: "http://www.google.com"
bcTypeEmail	Character string	Example: "name@email.com"
bcTypeContact	Empty. The members of the mContact structure will be automatically taken into account.
bcTypeLocation	geoPosition variable. The Latitude and Longitude properties of the variable will be automatically taken into account.

Printing a bar code in WLanguage

To print a bar code in WLanguage, you must use iPrintBarCode.
iPrintBarCode proposes two syntaxes:

syntax used to print a bar code directly (this syntax does not support QR Codes):
iPrintBarCode(<Value>, <Type>, <Coordinates of rectangle>, <Characteristics>)

The parameters are as follows:
- the value of the bar code. This value can be printed below the bar code.
- the type of the bar code to print.
- the coordinates (in pixels) of the rectangle in which the bar code will be printed.
- the characteristics of the bar code (if necessary).

syntax used to print a bar code in a variable of type BarCode (this syntax supports QR Codes):
iPrintBarCode(<BarCodes Variable>, <Coordinates of rectangle>)

All the parameters of the bar code to print are specified in the BarCode variable.

Regardless of the syntax used:

The bar code is printed in an invisible rectangle. This rectangle is used to specify the position and size of the bar code to print.
"EAN" and "UPC" bar codes have proportional width and height. To enlarge these bar codes, it is necessary to increase both height and width.
iEndPrinting must be used to start the actual print. This function must be the last print function used.

The following example presents the click code of a button used to print a EAN 13 bar code. The value of the bar code is retrieved in the edit control named "EDT_EditBC".

iPrintWord("Code-barres de type EAN 13 :") 
iPrintBarCode(SAI_SaisieCB, BC_EAN13, 10, 10, 50, 100) 
iEndPrinting()

The following example allows you to print a QR Code:

MonQRCode is BarCode
MonQRCode.Content = "http://www.pcsoft.fr"
MonQRCode.ContentType = bcTypeText
MonQRCode.TypeBarCode = BC_QRCODE
iPrintBarCode(MonQRCode, 10, 20, 50, 60)
iEndPrinting()

Related Examples:

Unit examples (WINDEV): The Bar Code control

[ + ] Using a Bar Code control