DLL not found, but I don’t need it ?

[Pavel]

Hello,
I am trying to create a simple WPF app using C# and a bit of XAML. I’ve read the documentation and tried all samples and they all worked fine. However when I try to make my own WPF app (using the WPF VS Studio template) from scratch, I get the following error: “Unable to load DLL ‘tobii_interaction_lib_c’: The specified module could not be found. (Exception from HRESULT: 0x8007007E)”. It seems to be looking for the C interaction library, but I can’t understand why, since it’s a C# project. I cannot even add reference to the said DLL. I have the feeling that I’m missing something fundamental but I can’t say what…
What should I do to at least make my app compile, what am I missing ?

Here is my project: https://github.com/pinkoto/WpfGazeApp

Best regards,
pinkoto

[Grant [Tobii]]

Hi @pinkoto, sorry to hear about your issues. I assume you already tried to compile the WPF application via the command line following our guide @ https://tobiitech.github.io/interaction-library-docs/wpf/html/gettingstarted.html ?

What was the output when you used this approach? The error code 0x8007007E is very strange as this appears to be connected to a Windows printer issue.

Looking at your gitHub repo however, it seems you are missing several DLL’s that are present in the ‘lib’ folder of the Interaction Library ZIP file which
you can download @ https://developer.tobii.com/product-integration/interaction-library/getting-started/ (Windows)

Make sure you have the Lib folder properly populated and let us know the results please, thanks.

[Pavel]

Seems, after all, I do need these other DLLs, not in reference with my project but in the destination folder (where my .exe is). Thanks, it worked.

I have two more quick questions though:
1. Is there a way to implement Gaze functionality into an ASP.NET app ?
2. Is there a legal problem with me uploading the Tobii DLLs as part of my public project to GitHub ?

[Grant [Tobii]]

Hi @pinkoto,

1. Is there a way to implement Gaze functionality into an ASP.NET app ?

This should be perfectly possible as the stream engine is built for the .NET architecture.. please do try it out and let us know how you get on.

2. Is there a legal problem with me uploading the Tobii DLLs as part of my public project to GitHub ?

You may include the Tobii DLL’s in your project freely assuming of course you adhere to the licence restrictions regarding analytical or research usage.

Do let us know if we can provide any further information. Best Wishes.

[Author]

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