q_slots - C++ Qt Signals and Slots 888 slot 35

Since display() is part of the class's interface with the rest of the program, the slot is public. ... The public API of Qt-based libraries should use the keywords Q_SIGNALS and Q_SLOTS instead of signals and slots.

PS: The slot and the signal have been properly declared in header files using the Q_SIGNALS and Q_SLOTS keywords, with the correct argument (aStruct).

Then to continue using Qt signals and slots with the no_keywords flag, simply replace all uses of the Qt moc keywords in your sources with the corresponding Qt macros Q_SIGNALS (or Q_SIGNAL), Q_SLOTS (or Q_SLOT), and Q_EMIT.