@PluginStudent @r_gigante Thanks for chipping in. If no more needs to be added I will set this as solved.

Hello everyone. Will be ever C4D for Linux with GUI from Maxon? Not wine emulation. Sometimes want to switch linux.

Hi, @lasselauch as a rule of thumb with Python2.7 always store data as a Unicode string. Control your IO which means, for each, Input make sure you know the encoding in all cases by always calling .decode('utf-8') so you are sure to store a Unicode value and get an error if something went wrong at a loading time. Then output the content according to your need some need ASCII, some can work with unicode, but do the conversion on the fly, don't touch you stored Unicode data. For the francophone people, there is this fabulous article about unicode Encoding in Python for English I guess the best I found on this topic is A Guide to Unicode, UTF-8, and Strings in Python. Cheers, Maxime.

@zipit Thanks,this paper Parallel Transport Approach to Curve Framing I will follow your suggestion to explore RMF. It may be that the language barrier prevents us from communicating well, but I still get a lot of help from your answer. I use Google translate

hello, thanks @PluginStudent :D @karol_w welcome to the forum, just want to point you to our forum rules, we marked that thread as a question and set it as solved. This help us to keep the forum organized. Be aware that a negative answer is still a "solved" question to us. please have a look at those thread to be a bit familiar with the forum's tools Q&A New Functionality. How to Post Questions especially the tagging part. Cheers, Manuel

@s_bach said in Communication between DescriptionTool and GeUserArea: The typical modern approaches are patterns like Model-View-Controller or Model-View-Presenter. In such models, you don't "send data around". Thanks for mentioning this. As stated in my opening post, this is what I have been using, where the "model" is a singleton class, available as a global variable to all plugins to synchronize and share data. Maybe not quite the exact wording. I was just wondering if there is another means of providing this "model" instead of using an instanced (singleton) class via a global variable? So in your example, the interaction with the DescriptionToolData would write data into the model. And the GeUserArea would read that data from the model. The example I provided isn't making use of a "model" as it already represented too much code just to point out the bug that slipped into R21. There I indeed used a very simplified solution by "sending data around". But an overall "thank you" for bringing up the model-view discussion, as this made me realize I could use an observer pattern in another project of mine which would fix its current poorly chosen design. Daniel

Thanks, @m_adam! That should put me a step closer.

@zipit Thank you. That'll help me.

@m_adam Thank you very much ! it is certainly helpful !!