BCDecode (Function)

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Managing errors
Decoding QRCode

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BCDecode (Function)

In french: CBDécode

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

Caution: The QR Code must cover a sufficient section of source image and it must be sufficiently contrasted and clear in order for the decoding to be performed.

Versions 17 and later

This function is now available for the iPhone/iPad applications.

This function is now available for the WEBDEV sites in Windows.

This function is now available for the Linux applications and sites.

New in version 17

This function is now available for the iPhone/iPad applications.

This function is now available for the WEBDEV sites in Windows.

This function is now available for the Linux applications and sites.

This function is now available for the iPhone/iPad applications.

This function is now available for the WEBDEV sites in Windows.

This function is now available for the 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 the Android applications.

New in version 23

This function is now available in Android Widget mode.

This function is now available for the Android applications.

This function is now available in Android Widget mode.

This function is now available for the Android applications.

Example

// Decode a QR Code from a Camera control
s is Buffer
s = dSaveImageBMP(CAM_NoName1, inMemory)
bc is BarCodes
bc = BCDecode(s)
IF ErrorOccurred = False _AND_ bc..TypeBarCode = BC_QRCODE _AND_ bc..TypeContent = ...
bcTypeEmail THEN
Info("Email address: " + bc..Content)
END

Syntax

<Result> = BCDecode(<Image>)

<Result>: BarCodes variable

Name of BarCodes 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

Managing errors

To find out whether the retrieval failed, use:

the ErrorOccurred variable,
the ..TypeBarCode property of BarCodes variable. If this property differs from BC_QRCODE, the bar code was not detected or decoded.

Decoding QRCode

The table below presents the correspondence between the ..TypeContent and ..Content properties of BarCodes variable:

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

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 in the bar code.

Component : wd250barc.dll