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Cannot Send Events To Objects Owned By A Different Thread


Converting the weight of a potato into a letter grade Do Morpheus and his crew kill potential Ones? I have about 4000 posts to go until I become a Guru. Current thread 128f8250. I have just started to understand with QT, therefore at me it is a lot of questions:) Fastman26th July 2007, 17:35... http://sauvblog.com/cannot-send/cannot-send-to-channel-dd-wrt.html

this->disconnectFromHost(); // if(this->state() == QAbstractSocket::ConnectedState) - !!! What is the total sum of the cardinalities of all subsets of a set? Why are LEDs in my home unaffected by voltage drop? The events will automatically be dispatched by the event loop of the thread where the object was created. http://stackoverflow.com/questions/29922030/qt-send-signal-to-different-thread

Qt Threads

On 1941 Dec 7, could Japan have destroyed the Panama Canal instead of Pearl Harbor in a surprise attack? When I try to do: connect(this, SIGNAL(disconnect(), connectionThread, SLOT(stop())); stop() is a slot in connection thread and disconnect() is a signal from MainWindow. Regards Fastman26th July 2007, 19:05Where do you instantiate and start the thread? is incorrect.

I shall necessarily write that has turned out:) marcel26th July 2007, 22:01OK. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed call a method of a QObject that emits a signal or writes information to the console via qDebug(). I have many multi threadded applications and they communicate via signal/slot or invokeMethode.

If "updateProgress" tries to update the GUI (progress bar), it works only after the thread has terminated. Qt Disconnect Unfortunately, it still does not work. Powered by vBulletin Version 4.1.9 Copyright © 2016 vBulletin Solutions, Inc. They would be greatly appreciated.

Download in other formats: Comma-delimited Text Tab-delimited Text RSS Feed Contact – Privacy policy – Terms of Use Qt Centre Forum > Qt > Qt Programming > Thread+send event PDA although that method/slot clearly exists. It is quite hard to provide a simple example as the thread is embedded into third party code. That being said, your current logic seems a little bit too complicated.

Qt Disconnect

share|improve this answer answered Feb 26 '15 at 12:05 Zeta 61.3k699150 But when I call the delete on camwrk, I found its deconstructor is working on the main thread? Current thread c0a528. Qt Threads Make sure that the thread doesn't run anymore before the object gets destroyed, or simply remove this from new QThread(this) to prevent ownership. Qobject::connect The signal is in Connection.

the widget's update() slot. –Frank Osterfeld Jan 26 '12 at 15:04 Thank you...... –Mr.Tu Jan 26 '12 at 15:43 add a comment| 1 Answer 1 active oldest votes up check my blog I added information about that. –knocker_d May 30 '13 at 13:22 Can you just put a breakpoint on the statement (inside Qt) that prints that warning, and look at It is moved to workerThread. class PaintThread : public QThread { private: QWidget* parent; public: ~PaintThread() {} PaintThread(QWidget* parent = 0) { this->parent = parent; } void run() { while (1) { this->msleep(5000); parent->repaint(); } this->exec(); Qthread

There is no output prior to thread termination - which defies the use of a progress bar. Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. Would we find alien music meaningful? this content But without more source, I have some problems in reproducing it...

Similarly, QCoreApplication::sendEvent() (unlike postEvent()) can only be used to dispatch events to objects living in the thread from which the function is called. You don't need to move the main window to the thread, try this: connectionThread->moveToThread(connectionThread); Or much better use the worker object method presented in the documentation. –Zlatomir Apr 28 '15 at Would we find alien music meaningful?

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When the signal is emited, i get: ASSERT failure in QCoreApplication::sendEvent: "Cannot send events to objects owned by a different thread. Who plays Penk in ‘Tsunkatse’? Nokia Certified Qt Specialist. When I use invokeMethod calling the slot as suggested, I receive: QMetaObject::invokeMethod: No such method SomeOtherQObject::1updateProgress(int)(int) ...

How to delete the lines from a file that do not contain dot? It offers a callback function that offers the current progress (an integer). Connect SendMsg to a a signal in the FortuneThread. have a peek at these guys Receiving works in my app, but when trying to send, I am getting error that I am trying to send to another thread...

Of course I can also defer output to another object like this: "someOtherQObject->updateProgress(percent)". So as a solution I would propose the following: Define a signal in your PaintThread class connect this signal to the paint() slot in QWidget subclass Emit it in the run()