Implementing Qt Signals and Slots in Pure C++

QT library · Qt::DirectConnection

Implementing Qt Signals and Slots in Pure C++ Passing extra arguments to Qt slots · Create a new QSignalMapper object · Connect the triggered slots of the actions to the mapper's map slot

QT library · Qt::DirectConnection

qt signal slot Qt Signal & Slot implementation is deterministic, but it's using QVariant to box and then unbox values, so there is definitely a performance

Does your code ever return to the Qt event loop? Thank you for the answer but I don´t understand you I put the breakpoint in the emit line, and

qt connect signal to slot This page was used to describe the new signal and slot syntax during its development The feature is now released with Qt 5

Passing extra arguments to Qt slots · Create a new QSignalMapper object · Connect the triggered slots of the actions to the mapper's map slot