Hi @Alessandro
when interacting with scintilla control the Scintilla documentation is a good starting point.
The concept is 99% like this, you send a message (the SCI_…) and either you get an immediate
return or/and you will be notified by the so called notifications.
The remainig 1% is it doesn’t work as expected. ;-)
When interacting with gui aka notepad++ then you need to get an understanding
how windows applications work in general. The main topic here is windows messages.
Cheers
Claudia