Re: Unable to set Custom Capabilites for Kodak i40 scanner

Hi,
I have a Kodak i40 scanner that I am trying to control using LEADtools v14.5. The i40 scanner provides the facility to scan colour and black and white images simultanously using separate cameras.

I am trying to enable the individual cameras on the the i40 using the custom capabilities provided by the scanner. I can access the custom capability "CAP_CAMERAENABLE" by using the "twnSession.GetCapability" method but I have to set this capability for each camera. According to the Kodak documentation, I have to use the DAT_FileSystem to select each camera and then set the capability.

I can use the "twnSession.QueryFileSystem(FileSystemMsg.GetInfo)" method to access the file system but when I use "twnSession.QueryFileSystem(FileSystemMsg.ChangeDirectory)" to change the device I get the following error: "Input file name not found or output file name invalid" I have tried setting the "InputName" and the "OutputName" properties using the following code:

 TwainFileSystem fileSystem = twnSession.QueryFileSystem(FileSystemMsg.GetInfo);
 fileSystem.InputName = "/Camera_Color_Top";
 fileSystem = twnSession.QueryFileSystem(FileSystemMsg.ChangeDirectory);

but this still returns the error.

Any help would be greatly appreciated

Darran

It is currently not possible to specify the device that you want to
enable using the ChangeDirectory message.  I will add this as a
feature request and post back with the ref# for this request for your future reference.

I reported this issue to development with this ref#: 4454AMN.  Use it to inquire about the status.

This issue has been fixed in the latest setup.  It is not
available in the patch.  Please download the latest setup and try
it out.  If you do not have the setup's URL, then please send your
serial number to "support@leadtools.com" and we will send you download instructions.

Does this ability exist in the C++ API and Class libraries?

Also, is there an expample of querying the file system to determine what cameras exist?

Yes, this function is available in the API functions and C++ class
library.  Use L_TwainQueryFileSystem in the API and LTwain::QueryFileSystem in the class lib.