Qt 信号和槽对象断开连接？
我想知道如果我破坏信号发射对象是否需要断开信号和插槽。这是一个示例：
QAudioOutput * audioOutput = new QAudioOutput(format,mainWindow);
connect(audioOutput,SIGNAL(stateChanged(QAudio::State)),this,SLOT(stateChanged(QAudio::State)));
delete audioOutput;
audioOutput = new QAudioOutput(format,mainWindow);
connect(audioOutput,SIGNAL(stateChanged(QAudio::State)),this,SLOT(stateChanged(QAudio::State)));
这会自动断开旧音频输出的信号，还是会导致内存泄漏或其他一些未定义的行为？
先感谢您。
I am wondering if i need to disconnect singals and slots if i destroy the signal emitting object. Here is an example:
QAudioOutput * audioOutput = new QAudioOutput(format,mainWindow);
connect(audioOutput,SIGNAL(stateChanged(QAudio::State)),this,SLOT(stateChanged(QAudio::State)));
delete audioOutput;
audioOutput = new QAudioOutput(format,mainWindow);
connect(audioOutput,SIGNAL(stateChanged(QAudio::State)),this,SLOT(stateChanged(QAudio::State)));
Will this automatically disconnect the signal from the old audioOutput, or will it lead to mem leaks or some other undefined behavior ?
Thank you in advance.
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当您调用 QObject 析构函数时，信号会自动断开。
查看 Qt 文档： QObject 析构函数
The signals are automatically disconnected when you call the QObject destructor.
Have a look at the Qt documentation: QObject Destructor
您不必手动
disconnect()信号和槽，QObject销毁会自动清除它们。You don't have to manually
disconnect()signals and slots, theQObjectdestruction cleans them up automatically.