Connecting a Button Click signal to member function

[squidge]

Don't forget that you can always call a slot as a normal function call. Defining a function as a slot just registers it in the meta object data so you can connect to it.

[URPradhan]

Thank you.
I understood what you all said but I was asking to clarify it.
Else there is no harm for me to put foo() (my valuable fn :-) ) in private slots: section.