Problem displaying my main window

[jpn]

C++ access qualifiers public, protected and private (refer to you favourite C++ book for more explanation) apply to slots as well.

A slot is not a C++ but a Qt term. A normal C++ function is not a slot but a slot is a function. That is, a normal C++ function cannot be used as a slot in a connect statement but a slot can be called like a normal C++ function. A function needs to be explicitly declared as a slot to be able to use it as a slot. So there are no "slots defined in private slots" and "slots defined in private". Only the former are slots.

[Salazaar]

So we define slots in private slots, and standard cpp functioms in private, right?

[wysota]

Yes, that's right.