private/public qt signals

Question

Can Qt signals be public or private? Can I create internal signals, which are seen only inside the class?

Update: I have a class with some internal

Answer 1

No. Signals cannot be public or private. Qt signals are protected class methods.

"signals" keyword is defined in qobjectdefs.h (line 69 as for Qt 4.6.1):

#   define signals protected

UPDATE: signals are only protected upto and including all minor versions of Qt 4. From Qt 5.0 onwards they are public. See https://stackoverflow.com/a/19130831.