@medyakovvit ya exactly. First I have developed my code in Qt Widgets. For dashboard design I want to rewrite gui from Qt Widgets to Qt Quick/Qml. I have designed button and everything (Except signals and slot) . For example Button { id:sender ... [SOLVED] SIGNAL/SLOT cannot work with Qt:QueuedConnection ... [SOLVED] SIGNAL/SLOT cannot work with Qt:QueuedConnection [SOLVED] SIGNAL/SLOT cannot work with Qt:QueuedConnection ... The connection type is determined when the signal is emitted. Reply Quote 0. 1 Replies Last reply . Sen Li. last edited by @Leonardo @Leonardo said: f the receiver lives in the thread that emits the signal, Qt ... How to check if a signal is triggered from GUI or Code ... set a member flag variable before you execute code that triggers the signal which you can check in your slot, and revert it after the code; call QObject::blockSignals() before and after the your code which triggers the signal, but note that this blocks all signals of the object. Depending on the object/signal this might have side effects for Qt ...
[SOLVED] SIGNAL/SLOT cannot work with Qt:QueuedConnection [SOLVED] SIGNAL/SLOT cannot work with Qt:QueuedConnection ... The connection type is determined when the signal is emitted. Reply Quote 0. 1 Replies Last reply . Sen Li. last edited by @Leonardo @Leonardo said: f the receiver lives in the thread that emits the signal, Qt ...
It shouldn't be a great deal different from a signal/slot connection. Let's take a look at underlying mechanism of signals/slots. There is an event queue in each thread which maintains signals (events) that have been emitted but not processed yet. So whenever the execution returns to the event loop the queue is processed. How to Check Internet Connection Availability Using Qt/C++ How to Check Internet Connection Availability Using Qt/C++ The one and only correct answer is, you have to check if you can access some famous (like Google or Facebook) server on the internet. This question comes up a lot and surprisingly enough there is no clear answer for it because being connected to the internet can have different meanings ... Qt.ConnectionType public static final Qt.ConnectionType BlockingQueuedConnection Same as QueuedConnection , except that the current thread blocks until the slot has been delivered. This connection type should only be used for receivers in a different thread.
How to check if a signal is triggered from GUI or Code ...
If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Welcome to Qt Centre. Autocompletion does not work in SIGNAL() and SLOT() I tested this in qt creator 4.6.2 and it works fine there. [Edit André Hartmann : The reason for this behavior is, that Creator 4.7 and higher by default enables the Clang Code Model. Currently the only way to still get code completion for the macro-based SIGNAL and SLOT connection, Clang can be disabled in Help > About Plugins > Clang Code Model] New-style Signal and Slot Support - University of Texas at Austin New-style Signal and Slot Support¶ This section describes the new style of connecting signals and slots introduced in PyQt4 v4.5. One of the key features of Qt is its use of signals and slots to communicate between objects. Their use encourages the development of reusable components. A signal is emitted when something of potential interest ... Determine signals connected to a given slot in Qt - Stack ...
How Qt Signals and Slots Work - Part 2 - Qt5 New Syntax
It tries to connect a QTimer's timeout signal to the QApplication's quit slot by passing their object pointers and member function pointers to QObject::connect, but that fails to return a valid connection when built for x86_64 with an Intel Compiler (14.0 and 15.0 tested) Connecting C++ slots to QML signals - Qt 5 Blueprints
Qt's signals and slots mechanism ensures that if you connect a signal to a slotThis connection will report a runtime error. Note that signal and slot arguments are not checkedIt is possible to use Qt with a 3rd party signal/slot mechanism. You can even use both mechanisms in the same project.
I STRONGLY NEED to know slot where signal is connected to.
Prefer to use normalised signal/slot signatures | -Wmarc Jul 26, 2011 ... Marc Mutz on Qt, Boost, and C++. Search: ... check for normalized signatures ... Guideline: Prefer normalised signal/slot signatures in connect ... PSA: Please use new style Qt signals and slots not the old style ... Apr 24, 2015 ... PSA: Please use new style Qt signals and slots not the old style. Posted on April ... valueChanged[ str ].connect( self .valuechanged) ... It will come with type checking, if you don't want type checking just do pyqtSignal(object) .