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什么是Qt的Signals和Slots？ - 知乎 Signals Slots 信号和槽用于对象之间的通信。 信号和槽机制是 Qt 的核心特性，可能也是与其他框架提供的特性最不同的部分。 Qt 的元对象系统使信号和槽成为可能。 Signals and slots are used for communication between objects The signals and slots mechanism is a central feature of Qt and probably the part that differs most from the features