ImageEn Forum

Profile Join Active Topics Forum FAQ

All Forums

ImageEn Library for Delphi, C++ and .Net

ImageEn and IEvolution Support Forum

Remembering TWAIN Settings

Note: You must be registered in order to post a reply.
To register, click here. Registration is FREE!

View

UserName:

Password:

Format

Message

Emoji

Check here to include your profile signature.
Check here to subscribe to this topic.

T O P I C R E V I E W
Elemental	Posted - Nov 22 2019 : 11:46:31 I have made posts before about storing TWAIN settings to a local file, but I feel as if I'm doing more work than I'm supposed to. All I want is for my application to remember which TWAIN device was last picked by the user and what their custom settings were. For example, when I use Twack_32 (by the TWAIN working group), it remembers my last selected scanner and scan settings, without any apparent change to the registry or modifying any local files. How does it do that? I want my application to do that, too.
4 L A T E S T R E P L I E S (Newest First)
xequte	Posted - Nov 26 2019 : 16:34:08 Hi The process for that is not part of the Twain standard, so not a method available in ImageEn. There may be a general method to set it in Windows with other Delphi code. Nigel Xequte Software www.imageen.com
Elemental	Posted - Nov 25 2019 : 14:12:33 I downloaded the Demos which have been good to see. I had forgotten about those as good resources. Now that I know how to GET the default TWAIN device, how do I make my software SET the default device?
Elemental	Posted - Nov 25 2019 : 11:58:36 It seems that Twack_32.exe does more than that. Allow me to elaborate. The TWAIN driver for my HP 5590 saves settings in presets. These presets are listed in the first tab of the TWAIN dialog. Whenever I use ImageEn to set the TWAIN properties of the scanner, based on settings I saved in a custom text file, the HP driver goes and creates a new preset. If I run my application 20 times, I end up with 20 new presets. Twack_32, however, doesn't do that. It not only remember which TWAIN device I last selected in that program, but also which preset. It doesn't create new ones or modify old ones. I want my application to do that, too. And I have to believe that Twack_32 was not written just with HP TWAIN drivers in mind. How can I use ImageEn to replicate that functionality?
xequte	Posted - Nov 23 2019 : 15:15:14 Hi Have you set the default source? https://www.imageen.com/help/TIETwainParams.GetDefaultSource.html Nigel Xequte Software www.imageen.com