Signals and slots

SignalType::Arguments, typename SlotType::Arguments>::value), 256, Signal and slot arguments are not compatible ); 257, Q_STATIC_ASSERT_X((QtPrivate

First, it allows the compiler to check that the signal's arguments are compatible with the slot's arguments Arguments can also be implicitly converted by the

signal slot Since the signatures are compatible, the

signal and slot arguments are not compatible error: static assertion failed: Signal and slot arguments are not compatible 错误原因： 信号和插槽参数不兼容。 通俗的说，就是信号用的一种