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I want to use an ActiveX control from Dynamsoft to scan documents and reading barcodes from documents.

Scanning works just fine. But reading barcodes gives an error creating  ActiveX control. The samples they provide all work so I must be doing something wrong.

Can someone help me with this? Please find code here

I want to use an ActiveX control from Dynamsoft to scan documents and reading barcodes from documents.

Scanning works just fine. But reading barcodes gives an error creating  ActiveX control. The samples they provide all work so I must be doing something wrong.

Can someone help me with this? Please find code here

It appears that the Class is IAddon (not Addon). Typically once you instantiate the control (Display @DynamicWebTwain, you shouldn't need to display again,you typically use Modify to bring in the functions of the control. So first try and use IAddon and then try using Modify @IAddon and see if the error continues.

I want to use an ActiveX control from Dynamsoft to scan documents and reading barcodes from documents.

Scanning works just fine. But reading barcodes gives an error creating  ActiveX control. The samples they provide all work so I must be doing something wrong.

Can someone help me with this? Please find code here

Thank you for your reply shjerpe. I am not so good in translating this kind of code so if you could help with the syntax I would be very greatful.

I need the handle for @Iaddon and @Ibarcode and I thought this would be done by using the display statement.

The function I need is the @Read statement which gives the content of a barcode.

          CLASS @IBarcode

              CLSID, CC48C3D2-8F84-4011-BD6D-A8D2F42384B4

              NAME, "IBarcode"

     *[Class: @IBarcode] Read

     * method Read

              METHOD, 1, @Read,

                  "short" @sImageIndex, TYPE 2,

                  "int" @format, TYPE 22

                      RETURNING "VARIANT", TYPE 12

Can you help me with this?

Regards

André

I want to use an ActiveX control from Dynamsoft to scan documents and reading barcodes from documents.

Scanning works just fine. But reading barcodes gives an error creating  ActiveX control. The samples they provide all work so I must be doing something wrong.

Can someone help me with this? Please find code here

I'll try, but this is a complicated control. Does the vendor fr the control provide any VB or C or C# examples.

77  H-Barcode  handle of @Barcode.

try

77  H-Barcode  handle of @IBarcode.

I wonder if you need this line of code  DISPLAY @DynamicWebTwain - comment it out and

DISPLAY @IBarcode

                     line 2  col 2  lines 10  size 30

                     license-key " "

                     handle in H-Barcode

modify H-Barcode "@Read"  (() returning my-val

you'll actually need to put item in the ()  a short and an int to match what the function is expecting.

I want to use an ActiveX control from Dynamsoft to scan documents and reading barcodes from documents.

Scanning works just fine. But reading barcodes gives an error creating  ActiveX control. The samples they provide all work so I must be doing something wrong.

Can someone help me with this? Please find code here

Hello shjerpe,

I tried

77  H-Barcode  handle of @IBarcode. and this works

So I have the handle for @Ibarcode and @Iaddon

           inquire H-DynamicWebTwain @addon IN h-addon.

           inquire h-addon @Barcode IN h-barcode.

So far so good. But when I want to read the barcode or find out how many barcodes there are (Barcodecount) I get no result

They have samples which are written in HTML&JS

<!DOCTYPE html>
<html>
<head>
    <title>Use Dynamic Web TWAIN to read Barcode</title>
    <script type="text/javascript" src="Resources/dynamsoft.webtwain.initiate.js"> </script>
    <script type="text/javascript" src="Resources/dynamsoft.webtwain.config.js"> </script>
</head>

<body>
    <input type="button" value="Scan" onclick="AcquireImage();" />
    <input type="button" value="Load" onclick="LoadImage();" /><br />
    <select size="1" id="barcodeformat" style="position: relative; width: 220px;"></select>
    <input type="button" value="Read Barcode" onclick="ReadBarcode();" />

    <!-- dwtcontrolContainer is the default div id for Dynamic Web TWAIN control.
         If you need to rename the id, you should also change the id in the dynamsoft.webtwain.config.js accordingly. -->
    <div id="dwtcontrolContainer"></div>

    <script type="text/javascript">
        Dynamsoft.WebTwainEnv.RegisterEvent('OnWebTwainReady', Dynamsoft_OnReady); // Register OnWebTwainReady event. This event fires as soon as Dynamic Web TWAIN is initialized and ready to be used

        var DWObject;

        function Dynamsoft_OnReady() {
            DWObject = Dynamsoft.WebTwainEnv.GetWebTwain('dwtcontrolContainer'); // Get the Dynamic Web TWAIN object that is embeded in the div with id 'dwtcontrolContainer'
            if (DWObject) {//Currently only code 39 and code 128 are supported
                document.getElementById("barcodeformat").options.add(new Option("Code 39", 1));
                document.getElementById("barcodeformat").options.add(new Option("Code 128", 0));
            }
        }

        function AcquireImage() {
            if (DWObject) {
                DWObject.SelectSource();
                DWObject.OpenSource();
                DWObject.IfDisableSourceAfterAcquire = true; // Scanner source will be disabled/closed automatically after the scan.
                DWObject.AcquireImage();
            }
        }

        //Callback functions for async APIs
        function OnSuccess() {
            console.log('successful');
        }

        function OnFailure(errorCode, errorString) {
            alert(errorString);
        }

        function LoadImage() {
            if (DWObject) {
                DWObject.IfShowFileDialog = true; // Open the system's file dialog to load image
                DWObject.LoadImageEx("", EnumDWT_ImageType.IT_ALL, OnSuccess, OnFailure); // Load images in all supported formats (.bmp, .jpg, .tif, .png, .pdf). OnSuccess or OnFailure will be called after the operation
            }
        }
       
        function GetBarcodeInfo(sImageIndex, result) {//This is the function called when barcode is read successfully
            //Retrieve barcode details
            var count = result.GetCount();
            if (count == 0) {
                alert("The barcode for the selected format is not found.");
                return;
            } else {
                for (i = 0; i < count; i ) {
                    var text = result.GetContent(i);
                    var x = result.GetX1(i);
                    var y = result.GetY1(i);
                    var format = result.GetFormat(i);
                    var barcodeText = ("barcode[" (i 1) "]: " text "\\n");
                    barcodeText = ("format:" (format==4?"Code 39":"Code 128") "\\n");
                    barcodeText = ("x: " x " y:" y "\\n");
                    alert(barcodeText);
                }
            }
        }

        function GetErrorInfo (errorcode, errorstring) {//This is the function called when barcode reading fails
            alert(errorstring);
        }
       
        function ReadBarcode() {
            if (DWObject) {
                if (DWObject.HowManyImagesInBuffer == 0) {
                    alert("Please scan or load an image first.");
                    return;
                }
                //Get barcode result.
                switch (document.getElementById("barcodeformat").selectedIndex) {
                    case 0:
                        result = DWObject.Addon.Barcode.Read(
                            DWObject.CurrentImageIndexInBuffer, EnumDWT_BarcodeFormat.CODE_39, GetBarcodeInfo, GetErrorInfo);
                        break;
                    case 1:
                        result = DWObject.Addon.Barcode.Read(
                            DWObject.CurrentImageIndexInBuffer, EnumDWT_BarcodeFormat.CODE_128, GetBarcodeInfo, GetErrorInfo);
                        break;
                    default:
                        break;
                }
            }
        }
    </script>
</body>
</html>

I want to use an ActiveX control from Dynamsoft to scan documents and reading barcodes from documents.

Scanning works just fine. But reading barcodes gives an error creating  ActiveX control. The samples they provide all work so I must be doing something wrong.

Can someone help me with this? Please find code here

I apologize. I've provided as much as I know. I'm sure there is a way the control gathers the info to do the read but it is beyond my skills. - Steve

I want to use an ActiveX control from Dynamsoft to scan documents and reading barcodes from documents.

Scanning works just fine. But reading barcodes gives an error creating  ActiveX control. The samples they provide all work so I must be doing something wrong.

Can someone help me with this? Please find code here

Ok Steve thank you for your help.

I got a little bit further in my search. The next line returns a value in w-var-variant.

But when I want to use C$GETVARIANT it says Invalid or missing parameter to "C$GETVARIANT"

 modify H-Barcode  @Read (

                    by name  sImageIndex  1

                    by name  format  16)

                    Returning W-Var-variant.

  call "C$GETVARIANT" using W-Var-VARIANT, w-var-text

I want to use an ActiveX control from Dynamsoft to scan documents and reading barcodes from documents.

Scanning works just fine. But reading barcodes gives an error creating  ActiveX control. The samples they provide all work so I must be doing something wrong.

Can someone help me with this? Please find code here

Is W-Var-variant defined in linkage as usage handle?

I want to use an ActiveX control from Dynamsoft to scan documents and reading barcodes from documents.

Scanning works just fine. But reading barcodes gives an error creating  ActiveX control. The samples they provide all work so I must be doing something wrong.

Can someone help me with this? Please find code here

Hello Steve,

I gave up on this control. I found another one from viscomsoft and I got it working in a few hours.

Anyway thanks for your help

André

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