TwainSelectSource(ptr) does not work in a thread

[DriverTech]

Hello,

I am trying to do TWAIN scanning in an asynchronous thread. I followed Loic's post on best practices exactly. If I call TwainSelectSource(ptr) outside of the worker thread, my scanner (Visioneer Strobe XP 220, with 32 bit drivers installed and target x86) shows up in the list of sources. If I call TwainSelectSource(ptr) in the worker thread, the scanner does not show up in the list of available sources.

Thank you for your help!

DriverTech

[Loïc]

Hello,

We need more information to investigate TWAIN problems. Here the procedure including some tips: viewtopic.php?t=1486

Kind regards,

Loïc

[DriverTech]

I submitted a support ticket, thank you.