Hi ! I'm developping a custom device with the RT part adapting it's behaviour according to some parameters set in the configuration part (system explorer). 90% of the functions will all behave the same way; but only few functions will be specific according to these settings. That is why I naturally made the custom device using OO with the purpose to use inheritance. So I have a Parent class which holds 90% of the running code and few childs overriding functions to adapt the 10% that is varying from one setting to another. Childs are instanciated using a factory pattern : one particular setting is determining the child object to load. The problem comes when trying to build the engine LLB. Childs are loaded dynamically so I set theses classes to be always included. When I do so, LV says that it prevents collision renaming some functions. These fuctions are the overrides in my childs... Pointed VIs are then not embedded in the LLB (and therefore not deployed on my target). If I don't add the childs to Always Included VIs, then the output of the build is the llb but the code never runs correctly : when deploying it says that RT engine VI is broken. How can I do to make things working ? Is there a solution to force embedding the classes into the llb without LV saying that it prevents conflicts ? Or is there a way to deploy more files than only the engine llb ? Thank you for your answers !

llbs are basically like folders: you cannot have 2 files having the same name, so overrides/OOP don't work with llbs. This is why LabVIEW ditches you when building the llb. Basically, when distributing plugins using the factory pattern, you build one core app/distro which contains the parent class and the core components, and then you distribute every single child class in its own llb, while making sure to exclude the parent class from those (if you explicitly don't, LV will try to add it because it's a dependency for the child). Another possibility is to create packed libraries (.lvlibp), but that will compromise your current design. In both case, make sure the children llb/lvlibp files are added as a dependency of the engine llb in the Custom Device XML file, otherwise VeriStand will not deploy them to the target. Finally, generally speaking, OOP is rarely a great idea when developing custom devices (I'm the first one to be sad with that statement). But, then again, good luck 🙂 Regards,

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