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Code part responsible for file opening

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I'm new to Ultimaker Cura and am still exploring the whole project. I am interested in the code part which is responsible for opening a selected file when the user clickes on "Open File(s)..." in the Cura application. I think I could use this code structur for some of my plugin ideas which involve the automatic opening of a specific file. I was looking at the read methods of the MeshReader and FileReader classes in the Uranium Framework but did not find the answer there. I was not able to find this part in the Cura code either.


Does anyone know in which Class I can find this implementation? Or does anyone have an idea how I can automatically open a File with a plugin extension?

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