Qt Signals and Slots: A Comprehensive Guide

Signals and slots can take any number of arguments of any type They are completely typesafe: no more callback core dumps! All classes that inherit from QObject

Signals can propagate arguments to each of the slots they call For instance, a signal that propagates mouse motion events might want to pass along the new

signal and slot QT编译错误: Signal and slot arguments are not compatible 原因如下： 信号和插槽参数不兼容。 当时把connect函数写成了这样子：

signal slot qt Since the signatures are compatible, the compiler can help The rule about whether to include arguments or not in the SIGNAL() and SLOT