CODEWITHSUNDEEP
c#wpfimagingimage-scannertwain
Valentin V
Valentin V

Reputation: 25739

C# TWAIN interaction

I'm trying to set up a C# application which uses TWAIN example from code project

This works fine except that I need to cast Form to IMessageFilter and call IMessageFilter.PreFilterMessage() to catch TWAIN callbacks.
Also I need to start this filtering by calling

Application.AddMessageFilter();

Is there a way to do same thing in WPF Window? (To add message filter and catch TWAIN callbacks).

Another totally high level question: Does anybody know about alternative C# TWAIN libraries\wrappers?

Thank you.

Upvotes: 6

Views: 13858

Answers (3)

Luke Quinane
Luke Quinane

Reputation: 16605

I've just wrapped up the code from Thomas Scheidegger's article (CodeProject: .NET TWAIN image scanning) into github project

I've cleaned up the API a bit and added WPF support, so check it out. :)

It has a simple WPF application that shows how the message filtering works with WPF.

Upvotes: 9

csgero
csgero

Reputation: 2773

You could try it with the ComponentDispatcher.ThreadFilterMessage event.
As far as I understand, it serves the same purpose in WPF as Application.AddMessageFilter() in WinForms.

Upvotes: 4

driAn
driAn

Reputation: 3335

I thought TWAIN is considered obsolete. Maybe take a look at WIA, that does this job since WinXP. There is also a sample at codeproject. About the WPF related question, no idea, I only used it in windows forms apps.

Upvotes: 0

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