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.

Caution: The barcode must cover a sufficient portion of the HEX@ image and have sufficient contrast and sharpness for decoding to occur.

Versions 17 and later

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 WEBDEV sites in Windows.

This function is now available for Linux applications and sites.

This function is now available for WEBDEV sites in Windows.

This function is now available for Linux applications and sites.

Example

Syntax

<Result> = BCDecode(<Image>)

<Result>: BarCode variable

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

<Image>: Character string (with or without quotes)

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

Component : wd260barc.dll