Public routines

[eltecprogetti]

I resolved.

it was necessary to create a istance of MainWindow in the Diagnostics.cpp (Mainwindow *Main).

At this point I need to write Main->Read_Ambiente();

[mentalmushroom]

of course, it is necessary, hard to imagine how could you use it without having an instance

[Spitfire]

In some cases you could use 'static' method to call it wthout instance of an object.