QMetaObject::Connection QObject::connect(const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type = Qt::AutoConnection) const 这个函数是connect()的重载,等价于 connect(sender, signal, this, method, type) 函数说明: connect函数用于将发送者对象(sender)的信号(signal)...
:: connect(socket ,&QTcpSocket :: connected , [ = ](){ socket - > write(“GET” + page + “\ r \ n”); }); 如果发件人被销毁,连接将自动断开连接。但是,您应该注意,在发出信号时,仿函数中使用的任何对象仍然存在。 可以借助qOverload解决重载函数。 注意:此功能是线程安全的。
&QThread::finished, m_th, &QObject::deleteLater);//设置野指针为nullptrconnect(m_th, &QObject::destroyed,this, &MainWindow::SetPtrNullptr);connect(m_obj, &QObject::destroyed,this, &MainWindow::SetPtrNullptr);//消除野指针voidSetPtrNullptr(QObject *sender){if(qobject_cast<...
把线程的finished信号和obj对象、QThread对象的 QObject::deleteLater 槽连接，这个信号槽必须连接，否则会内存泄漏；如果QObject的派⽣类和QThread类指针是需要重复使⽤，那么就需要处理由对象被销毁之前⽴即发出的 QObject::destroyed 信号，将两个指针设置为nullptr，避免出现野指针；将其他信号与QObject派⽣类...
QT (也称为Qt) 是一种跨平台的C++应用程序开发框架,旨在简化软件开发过程并提供丰富的图形用户界面 (GUI) 功能。作为一个开发工程师和云计算领域的专家,我可以解释有关QT和QTranslate的相关内容。 QT是一个功能强大且广泛应用的开发框架,用于构建跨平台的桌面、移动和嵌入式应用程序。它提供了一系列的工具、类库...
bool connect ( const QObject * sender, const char * signal, const char * method, Qt::ConnectionType type = Qt::AutoConnection ) const bool disconnect ( const char * signal = 0, const QObject * receiver = 0, const char * method = 0 ) bool disconnect ( const QObject * receiver, ...
socket->connectToHost("qt-project.org",80);QObject::connect(socket,&QTcpSocket::connected,[=]() { socket->write("GET "+page+"\r\n"); }); The connection will automatically disconnect if the sender is destroyed. Note:This function isthread-safe. ...
const QObject *sender:发送者对象 const char *signal:信号 const QObject *receiver:接受者对象 const char *method:槽函数 Qt::ConnectionType type:连接类型,这是一个枚举类型 Qt::AutoConnection(缺省值) 如果信号的接收者与发射者在同一个线程中,就使用 Qt:: DirectConnection 方式 ;否则使用 Qt: :Queued...
bool QObject::connect ( const QObject * sender, const char * signal, const char * method, Qt::ConnectionType type = Qt::AutoConnection ) const This is an overloaded member function, provided for convenience. Connects signal from the sender object to this object's method. Equivalent to conn...
bool QObject::connect ( const QObject * sender, const char * signal, const char * method, Qt::ConnectionType type = Qt::AutoCompatConnection ) constThis is an overloaded member function, provided for convenience.Connects signal from the sender object to this object's method....