How to Expose a Qt C++ Class with Signals and Slots to QML

When you want to tell Qt that an event has occurred, you emit a signal When that happens, Qt executes all slots that are connected to the signal Before a

Qt's signals and slots mechanism ensures that if you connect a signal to a slot, the slot will be called with the signal's parameters at the right time Signals

qtech slot The signal must be a function declared as a signal in the header The slot function can be any function or functor that can be connected to the signal A

qt signal slot QObjects gained a new way to connect between signals and slots in newer versions of Qt Let's review how to get the most of that feature