AutoIt Requires Chilkat v11.7.0+

Handle QR Code Errors

See more QR Code Examples

Demonstrates what happens when a request is refused. QrCode returns false and the response holds errors[0] with three members: a code that does not change between versions, the path of the request member at fault (a JSON Pointer such as /encoding/qr/version), and a message. Requests are checked strictly, so a misspelled option is an error rather than being silently ignored. LastErrorText has the same information in more detail. AutoIt

Local $bSuccess = False

;  This example requires the Chilkat API to have been previously unlocked.
;  See Global Unlock Sample for sample code.

$oFmt = ObjCreate("Chilkat.Formats")
$oJson = ObjCreate("Chilkat.JsonObject")
$oJsonOut = ObjCreate("Chilkat.JsonObject")

;  1. A misspelled option: "moduleSise" for "moduleSize".
$oJson.UpdateString("payload.text","https://www.chilkatsoft.com/")
$oJson.UpdateInt("render.moduleSise",8)
$bSuccess = $oFmt.QrCode("generate",$oJson,$oJsonOut)
If ($bSuccess = False) Then
    ConsoleWrite("code: " & $oJsonOut.StringOf("errors[0].code") & @CRLF)
    ConsoleWrite("path: " & $oJsonOut.StringOf("errors[0].path") & @CRLF)
    ConsoleWrite("message: " & $oJsonOut.StringOf("errors[0].message") & @CRLF)
EndIf

;  2. A value out of range: QR versions are 1 to 40.
$oJson.Clear 
$oJson.UpdateString("payload.text","https://www.chilkatsoft.com/")
$oJson.UpdateInt("encoding.qr.version",41)
$bSuccess = $oFmt.QrCode("generate",$oJson,$oJsonOut)
If ($bSuccess = False) Then
    ConsoleWrite("code: " & $oJsonOut.StringOf("errors[0].code") & @CRLF)
    ConsoleWrite("path: " & $oJsonOut.StringOf("errors[0].path") & @CRLF)
    ConsoleWrite("message: " & $oJsonOut.StringOf("errors[0].message") & @CRLF)
EndIf

;  3. Too much data: this text does not fit a version 1 symbol.
$oJson.Clear 
$oJson.UpdateString("payload.text","https://www.chilkatsoft.com/barcode_overview.asp")
$oJson.UpdateInt("encoding.qr.version",1)
$bSuccess = $oFmt.QrCode("generate",$oJson,$oJsonOut)
If ($bSuccess = False) Then
    ConsoleWrite("code: " & $oJsonOut.StringOf("errors[0].code") & @CRLF)
    ConsoleWrite("path: " & $oJsonOut.StringOf("errors[0].path") & @CRLF)
    ConsoleWrite("message: " & $oJsonOut.StringOf("errors[0].message") & @CRLF)
EndIf

;  A program can act on the code.
If ($oJsonOut.StringOf("errors[0].code") = "capacityExceeded") Then
    ConsoleWrite("The text is too long for the symbol size allowed." & @CRLF)
EndIf

;  Sample output:

;  code: unknownOption
;  path: /render/moduleSise
;  message: unknown option
;  code: outOfRange
;  path: /encoding/qr/version
;  message: the value is out of range
;  code: capacityExceeded
;  path: /payload
;  message: the payload does not fit the requested QR version at the requested error-correction level
;  The text is too long for the symbol size allowed.