Application context, or service manager

[Solution]

Hello everyone again,

i'm started using Qt in the work. But at start, i've got some questions:

I'm used to use DI(dependency injection) containers, service locators(or some service managers) or some application context from web application programming, how you solving these things in Qt?

How you exchange data's between windows(i mean application windows).

for example: When i've got one windows, where i put some personal info and i've some miscellaneous info in extra window, so i want to get data to my base window.
I hope this is readable and understable for you.

thanks for answers Solution