BCDecode (Function)

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Error management
Decoding QRCode

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BCDecode (Function)

In french: CBDécode

Decodes information stored in a barcode. This bar code is contained in an image (image displayed in an Image control, file of an image or image in memory).

The type of decoded barcodes depends on the execution platform:

Only QR Code can be decoded.
All barcodes managed by the system can be decoded.

Caution: The barcode must cover a sufficient portion of the source Image and be of sufficient contrast and sharpness for decoding.

Versions 17 and later

This function is now available for iPhone/iPad applications.

This function is now available for WEBDEV sites in Windows.

This function is now available for Linux applications and sites.

New in version 17

This function is now available for iPhone/iPad applications.

This function is now available for WEBDEV sites in Windows.

This function is now available for Linux applications and sites.

This function is now available for iPhone/iPad applications.

This function is now available for WEBDEV sites in Windows.

This function is now available for Linux applications and sites.

Versions 21 and later

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Universal Windows 10 App mode.

Versions 23 and later

This function is now available in Android widget mode.

This function is now available for Android applications.

New in version 23

This function is now available in Android widget mode.

This function is now available for Android applications.

This function is now available in Android widget mode.

This function is now available for Android applications.

Example

// Décodage d'un QR Code à partir d'un champ Caméra
s is Buffer
s = dSaveImageBMP(CAM_SansNom1, inMemory)
cb is BarCode
cb = BCDecode(s)
IF ErrorOccurred = False _AND_ cb.TypeBarCode = BC_QRCODE
_AND_ cb.ContentType = bcTypeEmail THEN
Info("Adresse email: " + cb.Content)
END

Syntax

<Result> = BCDecode(<Image>)

<Result>: BarCode variable

BarCode variable initialized with the information read in the bar code.

<Image>: String of characters

Image of bar code to decode. This parameter can correspond to:
the name of an Image control.
the buffer of an image returned by dSaveImageBMP, dSaveImageGIF, dSaveImageJPEG and dSaveImagePNG.
the name of an image file.

Remarks

Error management

To find out whether the retrieval failed, use:

the ErrorOccurred variable,
or the Property TypeCodeBar of the Variable BarCode. If this property differs from BC_QRCODE, the bar code was not detected or decoded.

Decoding QRCode

The following array shows the correspondence between the Property TypeContent and the Property Content of the Variable BarCode:

Type of content	Type of value (..Content)	Remark

bcTypeText	String of characters	Example: "WINDEV is great!"
bcTypePhone	String of characters	Example: "0612345678"
bcTypeSMS	String of characters The members of the SMS structure (SMS.Message and SMS.Number) will be automatically filled with the values read from the barcode. The content will correspond to a string in the following format: <Number> + CR + <Message>	Example: "0612345678<CR>Text to send"
bcTypeURL	String of characters	Example: "http://www.google.com"
bcTypeMarket	String of characters	Example: "market://search?q=pname:com.company.application"
bcTypeWiFi	String of characters	Character string in the following format: <SSID> + TAB + <Security protocol>+ TAB + <Key> Example: "MyNetwork<TAB>WPA<TAB>pwd"
bcTypeEmail	String of characters	Example: "name@email.com"
bcTypeContact	Empty. The members of mContact structure will be automatically filled with the values read in the barcode.
bcTypeLocation	geoPosition variable. The Latitude and Longitude properties of the variable will be automatically filled with the values read in the barcode.

Component: wd270barc.dll