[Adam]

Hi Jim,

I don’t quite understand your requirements. Do you mean you already have some images located on your server, ftp site and/or local folders? And you want to load these images to your application, do some editing work and then upload them to somewhere in the multi-page PDF or TIFF format. Besides loading existing images, you also want your app to capture images from TWAIN compliant devices. Am I correct? If this is the case, you can check out Dynamic Web TWAIN to see if it is what you are looking for.

[Adam]

Hi Luís,

I’m from Dynamsoft. Not sure whether you’ve got the problem solved. If the problem persists, you can contact us via Live Help or through email at twainsupport at dynamsoft.com

Thanks,

[Adam]

Hi,

TWAIN and UVC are two different specifications. If the device is UVC compatible, you need to make sure that the software (gimp) also supports UVC.

I checked online and found that gimp supports TWAIN compatible devices. Not quite sure if it also supports UVC. Maybe you can contact them to verify the information.

__________________________
Adam
Dynamsoft: The leading provider of version control software and TWAIN SDK

[Adam]

Hi,

Is the driver occupied by other applications? Or is the source closed properly after every scanning session? You can try to call close source after scanning to see if it solves the problem.

_____________________
Adam
Dynamsoft: The leading provider of version control software and TWAIN SDK

[Adam]

Hi,

You can use ICAP_BARCODEDETECTIONENABLED, ICAP_SUPPORTEDBARCODETYPES and etc. to deal with the barcode information. Detailed information can be found in the TWAIN specification.

If you don’t want to learn all those capabilities, you can also find some third-party tool online, Dynamic .NET TWAIN (Barcode Add-on), to do the job for you.

[Adam]

Hi Antew,

Would you please be more specific about the problem? When did you get the error message? Do you have a screenshot of the error message?

_____________________
Adam
Dynamsoft: The leading provider of version control software and TWAIN SDK

[Adam]

Hi Fabio,

Did you try to close the source before your second step?

1) Control/Parent/OpenDSM to open the source manager
2) Close source.
3) Control/Identity/OpenDs to open the selected source
4) Control/UserInterface/EnableDsUiOnly to show twain configuration panel
5) Control/CustomDSData/Get to retrieve parameters
6) Control/Identity/CloseDs to close the selected source
7) Control/Parent/CloseDsm to close the source manager

____________________
Adam
Dynamsoft: The leading provider of version control software and TWAIN SDK

[Adam]

What error message did you get when setting through capabilities? Also, are you using a third-party tool to do the scanning or program from scratch based on the twain specification? If the latter, you can use DG_CONTROL / DAT_IDENTITY / MSG_USERSELEC to get the select source dialog box. ICAP_SUPPORTEDSIZE can be used for page size. For detailed information, you can refer to the specification:
https://www.twain.org/docs/TWAIN_2_1_Spec.pdf

___________________
Adam
Dynamsoft: The leading developer of version control software and TWAIN SDK

[Adam]

Would you please tell us more about the crash issue?

– Do you get the crash when scanning, or does it happen when you open the app?
– Did you try with another scanner?
– Besides Microsoft Office Document Scanning, did you try another tool, such as Twack (desktop) and Dynamic Web TWAIN (web)? If yes, how does it work?

[Adam]

Hi Jaroslaw.M,

I’m wondering whether the application hang issue is caused by the improper source close. You can try to close the source after every scanning session and see if it helps.

Adam
Dynamsoft: Version Control | TWAIN SDK

[Adam]

Hi Mohammad,

Would you please be more specific about “this is not working for HP LaserJer M1536dnf scanner”? If you’ve installed the driver (for HP) properly on Mac, what about the TWAIN application? Which application are you using or is it a self-designed one? Has the plug-in installed properly?

You can also try the following demo for testing purpose and see if you can scan images successfully.
http://www.dynamsoft.com/demo/DWT/online_demo_scan.aspx

[Adam]

Hi jmerhej,

I wanna make clear of the following two things:

1. With Dynamic TWAIN, you can access the driver installed on both the citrix server and the client PC.
2. With the TWAIN visual studio sample, you can only get the driver installed on the citrix server.

If I’m correct, please tell me whether you are testing the same drivers on the citrix server and the client PC. Also, please make sure you have the permission to access the driver.

___________________
Adam
Dynamsoft: The leading developer of version control software and TWAIN SDK

[Adam]

Hi,

You can use DG_CONTROL / DAT_IDENTITY / MSG_USERSELECT to display the select source dialog box. The dialog displays a list of all Sources that are installed on the system that can provide data of the type specified by the application. You can check out the the specification for detailed information.
https://www.twain.org/docs/TWAIN_2_1_Spec.pdf

___________________
Adam
Dynamsoft: version control software and TWAIN SDK

[Adam]

Hi PGlynn,

How do you set the compression? And do you 100% get the problem when scanning for the second time?

If you are working on your own application, you can use CAP_DUPLEX and CAP_DUPLEXENALBED to enable duplex scanning. If you want to filter out the blank page, you can try ICAP_AUTODISCARDBLANKPAGES.
https://www.twain.org/docs/TWAIN_2_1_Spec.pdf

Adam
Dynamsoft: TWAIN SDK | Version Control Software

[Adam]

Yes, this is a much better list. 🙂

_____________________
Adam
Dynamsoft: version control | TWAIN SDK

[Author]

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