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#1 Posted : Sunday, March 2, 2008 11:38:01 PM(UTC)

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We have a workstation with more than one scanner attached.
We want to be able to programmatically change the selected scanner within the application without asking the user to choose.

We are calling the .SelectSource() method.
Although at runtime it seems as if SelectedSourceName has changed, in reality it remains set to whichever source was used last. This becomes clear during scanning but also if you open the Twain driver select dialog (ex. DialogResult dlgres = _twainSession.SelectSource(String.Empty)) which states the currently selected driver as its default selection.

I am attaching the code we are using

Any help will be appreciated


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#2 Posted : Monday, March 3, 2008 5:34:34 AM(UTC)

Qasem Lubani  

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The post has not attachment. This could happen if you use the Preview button before submitting.

In any case, if you pass a
valid Twain source name to the SelectSource method, this Twain source will be used with subsequent LEADTOOLS Twain function calls.

However, please keep the following in mind:

1. This only works for the
current LEADTOOLS Twain session. It does not affect the global Twain source
manager, and it does not stay the same source if you end the session and begin a new Twain session.

2. This does NOT change the source selected in the
Twain Select Source dialog. The dialog shown by SelectSource is from the Twain source manager, not from LEADTOOLS. This means we cannot control it.

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