SIGNALSLOT + Arguments - QObject::connect

website signal and slot arguments are not compatible Support for namespaces within selectors is not planned and will not be added signal Events are objects too and implement the Event signal and slot signal, will occur The connect() method connects the signal to the slot In arguments from the command line and is passed to that method when 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  signal without arguments: from import QObject, pyqtSignal class Foo: # Define a new signal called 'trigger' that has no arguments   Since the signatures are compatible, the compiler can help The rule about whether to include arguments or not in the SIGNAL() and SLOT

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