PyQt 信号和槽
我刚刚开始使用 PyQt 进行编程，并且正在关注 Mark Summerfield 的“Python 和 Qt 中的快速 GUI 编程”。在此之前，我用 C++ 和 Qt 进行了一些编程，我遵循的书的作者推荐使用信号和槽，而且我也喜欢使用信号和槽而不是“on_widgetName_signalName”方法。但我很惊讶地看到“Python 和 Qt 中的快速 GUI 编程”的作者在使用设计器创建 GUI 的任何地方都在信号和插槽上使用了“on_widgetName_signalName”，更令我惊讶的是与 pyqt 捆绑在一起的示例安装程序做同样的事情。
是否有理由在 PyQt 中的信号和插槽上使用“on_widgetName_signalName”方法，或者只是这些人很长时间没有更新他们的代码？
I've just started programming in PyQt and I'm following "Rapid GUI programming in Python and Qt" by Mark Summerfield. Before this I did some programming in C++ and Qt and the author of the book which I followed recommended the use of signals and slots, and I too like the use of signals and slots over "on_widgetName_signalName" methods. But I was surprised to see that the author of "Rapid GUI programming in Python and Qt" uses "on_widgetName_signalName" over signals and slots wherever he created GUI using designer, and I was even more surprised to see that the examples which comes bundled with pyqt installer doing the same.
Is there a reason to use "on_widgetName_signalName" method over signals and slots in PyQt or its just that these people have not updated their code for long?
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基本上，当您使用 on_widget_signal() 时，它会自动将“widget”的信号连接到该函数（适用于 C++）
检查 QMetaObject::connectSlotsByName
Basicly when you use on_widget_signal() it auto connects "widget"'s signals to that function (applies to C++)
Check QMetaObject::connectSlotsByName