I have been researching about QThreads, and have found out that the best way to use thread is to inherit a QObject and then move that to another thread. Signals are important, because with a queued connection, I don't have to worry about locking anything.
Because I am using Qt5, I would like to take full advantage of speed. I'm aware of using function pointers to connect, and I would rather that than using invokeMethod. Therefore, I created a signal in my QObject that calls the slot.
@class Output : public QObject
{
Q_OBJECT
{
Q_OBJECT
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Aug 05, 2013 But when SLOTS and Qt event loop are used in the worker thread, some users do it wrong. So Bradley T. Hughes, one of the Qt core developers, recommend that use worker objects by moving them to the thread using QObject:. The slot get called in its living thread, which is the sub-thread. Connecting in Qt 5. There are several ways to connect a signal in Qt 5. Qt 5 continues to support the old string-based syntax for connecting signals and slots defined in a QObject or any class that inherits from QObject (including QWidget). Connect( sender, SIGNAL( valueChanged( QString, QString ) ), receiver, SLOT( updateValue( QString ) ) ).
Jun 02, 2015 Thread is surely one of the most discussed topic on Qt forums. Meanwhile, I never managed to find a simple example which describes how to simply do what I want to do: run a thread to do things and interrupt it if necessary (for example if the GUI is closed). That's why I'm writing this. But if the thread affinity differs, it will be delivered posting an event to the object. The internals of Qt will convert that event to a function call that will happen in the next run of the event loop of the receiver, so it will be in the “normal” thread for that object, and you often can forget about locks entirely.
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signals:
Signal And Slot In Qt
};@
Qt Execute Slot In Another Thread
And then add it to the queue by:
@Output *output = new Output();
output->moveToThread(tread);
emit ouput->postMessage();@
@Output *output = new Output();
output->moveToThread(tread);
emit ouput->postMessage();@
Qt Call Slot From Different Thread
Is my approach good? Will it be faster than invokeMethod since it uses function pointers instead of using strings to get the function? Is there a better way?