1 ) after selecting an object
you save all ( or Most ) the object variables on an ASCII files
Then Start the execution of an indepednant Module outside of Blender
Then from this new program it can read the ASCII files and can change whatever content of the variables and resave on the ASCII file
Then when you come back to the Scritpt file
you can read the ASCII file and change the values of the variables for the Selected object
It sounds a bit ridiculus but it would be a nice way to get a friendly window
on my PC and not have to deal with the complicated prensentation in Blender
The outside Task can then be written in wahever you wish.
Untrue. The laws of thermodynamics, limitations in whatever api, language and computer platform you are using, your own motivation, etc.
Is there a list of all the variables that we can find for one object with the name use on the differente menu and in the script?
Look in the Blender Python API documentation for the details about the objects of interest.
an dhow to start an external task ( XYZ.EXE )
Look at the Python documentation. The os.system() call will be useful. Also read about file i/o.
ect…
Learn enough about Blender to save and load text files and scripts. Learn how to execute Blender scripts. Look at other scripts like the importers and exporters for examples of what you want to do.
Learn whatever programming language you are going to write the rest of the application in.
What you want do is not complicated. You just need to have some basic knowlege first.