The Book of Qt 4: The Art of Building Qt Applications

A developer can choose to connect to a signal by creating a function and calling the connect() function to relate the signal to the

Finds connect() statements still using the old SIGNAL() SLOT() syntax The Qt 5 pointer-to-member syntax allows you to catch errors at compile

qt connect signal to slot with parameter 使用Qt的信号和槽（Signals and Slots）机制有以下好处：松耦合：通过信号和槽，对象之间的通信是松耦合的。发送者不需要知道接收者的具体实现细节，

qt signal slot example Signals and slots are the backbone of event-driven programming in Qt, offering a flexible and efficient mechanism for inter-object communication