I am trying to emit signal from a static member function to another slot from same member in QT 5. In my code, I have to call a static Gstreamer function which I made as a member of MainWindow so that it could emit signal to other MainWindow slots. My code is like this: mainwind...
class MyDialog : public QDialog { Q_OBJECT __ ... signals: void signalForAnotherDialog(); }; 然后,在另一个对话框AnotherDialog中,我们可以连接这个信号到一个槽函数, cpp class AnotherDialog : public QDialog { Q_OBJECT public: AnotherDialog(QWidget *parent = nullptr); ~AnotherDialog(); pri...
1 void QMetaObject::activate(QObject *sender, const QMetaObject *m, 2 int from_local_signal_index, int to_local_signal_index, void **argv) 3 { 4 int offset = m->methodOffset(); // 指向qt_meta_data_QAbstractButton[27]字节,也就是clicked(bool) 5 int from_signal_index = offset + f...
在MainWindow类中添加QdebugSignal信号;在构造函数中将QdebugSignal信号与InheritQThread::QdebugSlot槽函数进行绑;添加一个发送QdebugSignal信号的按钮: /***在MainWindow构造函数中绑定信号槽***/ explicit MainWindow(QWidget *parent = nullptr) : QMainWindow(parent), ui(new Ui::MainWindow){ qDebug()<<...
class Task : public QRunnable { public: void run() { /* your runnable implementation goes here */ } }; 事实上,我们是使用QThreadPool 类来运行一个QRunnable 对象,它维护了一个线程池。通过调用QThreadPool::start(runnable) ,我们把一个QRunnable 放入了QThreadPool的运行队列中;只要线...
I would like to emit a signal in Qt, from a function that I called with QtConcurrent::run Is this possible? It seems like my slot never gets called. All of the signals, slots, and functions are part of the same class object. I have tried making the connection in the Master thread,...
data->eventDispatcher.load()->startingUp();elsecreateEventDispatcher(data);...//省略emit thr->started(QThread::QPrivateSignal());// 发射线程启动信号QThread::setTerminationEnabled(true);thr->run();// 调用QThread::run()函数 -- 线程函数finish(arg);//结束线程return0;}...
4: QObject::connect(reply, SIGNAL(finished()), &loop, SLOT(quit())); 5: loop.exec(); 6: /* reply has finished, use it */ QNetworkReply 没有提供一个阻塞式的API,而且它要求运行一个事件循环。
If this is not an option for you because the value is set in a slot called by a signal from somewhere else, you can at least take action afterwards by connecting to the signal overflow() that is emitted whenever a number or a string that does not fit into the available digits is pass...
connect as many signals as you want to a single slot, and a signal can be connected to as many slots as you need. It is even possible to connect a signal directly to another signal. (This will emit the second signal immediately whenever the first is emitted.) Together, signals and ...