DataFlex Requires Chilkat v11.7.0+

Generate a QR Code as SVG

See more QR Code Examples

Demonstrates SVG output. An SVG is a vector image, so it stays sharp at any size, which suits print and responsive web pages. Setting output.format to svg and output.return to text returns the SVG document as a string in outputs[0].text. The SVG can also be written straight to a file with output.path, the same as a PNG. DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Variant vJson
    Handle hoJson
    Handle hoFmt
    Variant vJsonOut
    Handle hoJsonOut
    Variant vSbSvg
    Handle hoSbSvg
    String sTemp1
    Integer iTemp1
    Integer iTemp2

    Move False To iSuccess

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

    Get Create (RefClass(cComChilkatJsonObject)) To hoJson
    If (Not(IsComObjectCreated(hoJson))) Begin
        Send CreateComObject of hoJson
    End
    Get ComUpdateString Of hoJson "payload.text" "https://www.chilkatsoft.com/" To iSuccess
    Get ComUpdateString Of hoJson "output.format" "svg" To iSuccess

    //  An SVG is text, so it can be returned as text rather than as base64.
    Get ComUpdateString Of hoJson "output.return" "text" To iSuccess

    Get Create (RefClass(cComChilkatFormats)) To hoFmt
    If (Not(IsComObjectCreated(hoFmt))) Begin
        Send CreateComObject of hoFmt
    End
    Get Create (RefClass(cComChilkatJsonObject)) To hoJsonOut
    If (Not(IsComObjectCreated(hoJsonOut))) Begin
        Send CreateComObject of hoJsonOut
    End
    Get pvComObject of hoJson to vJson
    Get pvComObject of hoJsonOut to vJsonOut
    Get ComQrCode Of hoFmt "generate" vJson vJsonOut To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoFmt To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbSvg
    If (Not(IsComObjectCreated(hoSbSvg))) Begin
        Send CreateComObject of hoSbSvg
    End
    Get pvComObject of hoSbSvg to vSbSvg
    Get ComStringOfSb Of hoJsonOut "outputs[0].text" vSbSvg To iSuccess

    Get ComStringOf Of hoJsonOut "outputs[0].mimeType" To sTemp1
    Showln "MIME type: " sTemp1
    Get ComIntOf Of hoJsonOut "outputs[0].width" To iTemp1
    Get ComIntOf Of hoJsonOut "outputs[0].height" To iTemp2
    Get ComStringOf Of hoJsonOut "outputs[0].units" To sTemp1
    Showln "size: " iTemp1 " x " iTemp2 " " sTemp1
    Get ComLength Of hoSbSvg To iTemp1
    Showln "SVG length: " iTemp1 " characters"

    //  The SVG is a complete document that can be saved, or placed inline in an HTML page.
    Get ComWriteFile Of hoSbSvg "qa_output/qr_chilkat.svg" "utf-8" False To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoSbSvg To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    //  The SVG:

    //  

    //  Sample output:

    //  MIME type: image/svg+xml
    //  size: 148 x 148 px
    //  SVG length: 12500 characters


End_Procedure