On how many characters is it truncated for you??
The image answers better:
Twain standard 2.2 is 34 characters.
https://www.twain.org/wp-content/uploads/2016/03/TWAIN-2.2-Spec.pdfand the latest 2.4 too
https://www.twain.org/wp-content/uploads/2017/03/TWAIN-2.4-Specification.pdfThe TW- in your image seems to be truncated at 27. (Edit: not truncated but has version and bitness after it)
The WIA seems to be correctly truncated at 34.
Not sure if those other selection screens really use the Twain standard.Edit: Actually... looking at the other Select source image... they are truncated TOO !!!!
But they have a driver version after them and an indication for 32 bit (32-32)
So all Select source samples are the same for the ProductName.
The Select source screen itself comes from the Twain driver so I'm not sure which flags should be added to get the version and (32-32) to show for you too.
Edit #2: Again. Last correction.
For DelphiTwain the Select Source is custom.
It is called TDelphiTwain.CustomSelectSource()
In there you can add the version-number and bitness.
I'm not sure how to call the standard Select Source from Twain itself (but there must be a way).