Qt signal slot main thread

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Qt хорошо известен своим механизмом сигналов и слотов. Но как это работает? В этом посте мы исследуем внутренности QObject и QMetaObject и раскроем их работу за кадром.Qt хорошо известен своим механизмом сигналов и слотов.

You are doing the signal and slot across thread. Signal is sent from MyThread and Slot is main thread. ... Slot on main thread not called when signal is emitted from another thread Slot on main thread not called when signal is emitted from another thread. This topic has been deleted. Only users with topic management privileges can see it. Qtのsignal/slotとthread(1) - Qiita More than 3 years have passed since last update. C++(に限らないけど)のプログラミングで難しいのは、メモリ管理と並行管理です。 Qtを使うと、これらのかなりの部分が簡単になります。が、何が起きているのかを理解していないと ... Communicating with the Main Thread | C++ GUI ... - InformIT The Image Pro application shows how Qt's signals and slots mechanism makes it easy to communicate with the main thread from a secondary thread. Implementing the secondary thread is trickier, because we must protect our member variables using a mutex, and we must put the thread to sleep and wake it up appropriately using a wait condition. Threads Events QObjects - Qt Wiki Signals and slots across threads work in a similar way. When we connect a signal to a slot, the fifth argument of QObject::connect is used to specify the connection type: a direct connection means that the slot is always invoked directly by the thread the signal is emitted from;

Сигналы и слоты в Qt / Хабр

Signals and Slots Across Threads. Qt supports these signal-slot connection types: Auto Connection (default) If the signal is emitted in the thread which the receiving object has affinity then the behavior is the same as the Direct Connection. Otherwise, the behavior is the same as the Queued Connection." Communicating with the Main Thread | C++ GUI - InformIT

Сигналы и слоты в Qt / Хабр

Dec 20, 2012 · Both the signal and slot are defined in the same class and running under the main GUI thread, but I call the emit in another function which is being controlled by a boost thread type of thread. I am using Qt4 and Ubuntu 10.04 is my OS. This function is called from another thread which is emitting the signal. "How to use QThread in the right way (Part 1)" — 1+1=10 Aug 05, 2013 · The signal timeout() emitted from main thread, As timer and worker live in different threads, their connection type is queued connection. The slot get called in its living thread, which is the sub-thread. Thanks to a mechanism called queued connections, it is safe to connect signals and slots across different threads. [SOLVED] Qt: Main thread signal + worker thread slot. | Qt

Communicating with the Main Thread | C++ GUI Programming with ...

Qt4 connect QThread signal with main thread slot -… the thing is that the SLOT update_gui() is defined in the main window header and implemented in the .cpp, but it never gets to execute. I have tried attaching Qt::DirectConnection, and the gui updates, but when worker is finished... the whole program closes. I've looked this but didn't worked for me... Как работают сигналы и слоты в Qt (часть 1) / СоХабр Qt хорошо известен своим механизмом сигналов и слотов. Но как это работает? В этом посте мы исследуем внутренности QObject и QMetaObject и раскроем их работу за кадром.Qt хорошо известен своим механизмом сигналов и слотов. Создание собственных виджетов Qt. Сигналы, слоты и…