I have a couple of devices. Sony Visual Communication Camera 1.0 AND Logitech Camera 1.3.
I am not too sure what you mean by whose CTwain you are using. It appears to be a ‘standard’ CTWain file with a few modifications, none if which are in the region of the OPEN_DSM call. I am calling it a ‘standard ‘file because like other external files in the project, it doesn’t strictly conform to our coding standards.
Come to think of it, the CTwain.cpp and h files I am looking at were incorporated into our projects circa 2003. Can anyone point me to an updated set of files (cpp, h and dll)?