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Thank you all for your help.
I know that ISIS allows getting list of models from driver and thought there was something similar in TWAIN. It looks I will have to implement some tricks to emulate necessary behaviour and provide some kind of proxy TWAIN driver for every other TWAIN drivers in the system.
Sure, I’ve read specification
“The disk file mode is ideal when transferring large images that might encounter memory
limitations with Native mode. Disk File mode is simpler to implement than the buffered mode
discussed next. However, Disk File mode is a bit slower than Buffered Memory mode and the
application must be able to manage the file after creation.”
but from my experience I saw that applications used only either Native or Buffered memory modes. Also I don’t think that implementations of Buffered memory is more difficult than Disk file mode so Disk file mode looks useless 🙂 . Have you ever seen applications which would use disk file mode?
repair topic after a long time =)
JFY there are ISIS drivers for MFD as well but you are correct this is small range of MFDs
I think you are wrong, installer (as any other program) can request administrative rights or doesnt request them for example if it just copy files to local folder. Also some application based on .NET are distributed using ClickOnce technology without msi and setup files and without administrative rights and working in partial trust environment. Imaging following case when administrator installed scanner with hardware and twain drivers after that user came and run application which just copy files and its own twain driver (for image processing for example) in local folder…
I dont see any advantages if you use 64 bit paltform but with 32 bit drivers. Because in this case your application will not use all power of 64 bit platform and will work in 32 bit environment even on 64 bit system.
As I understand this requirement is a critical if your application works on VISTA because to copy anything to Windows folder on VISTA your application has to have administrative rights
Thank you gabe,
This is really interesting issue and I will look at other posts closely but I don’t think that way described by you is the best. And this is strange that there is no anything about this in Twain specification 🙄