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This page was used to describe the new signal and slot syntax during its development. The feature is now released with Qt 5.
The one thing that confuses the most people in the beginning is the Signal & Slot mechanism of Qt. ... Qt Signals & Slots: How they work ... a full stack of pointer ... Qt 4.4.3: Signals and Slots - Developpez.com A callback is a pointer ... A class which emits a signal neither knows nor cares which slots receive the signal. Qt's signals and slots ... public slots: void ... A Deeper Look at Signals and Slots - elpauer A Deeper Look at Signals and Slots ... now I keep a (changeable) pointer to the function to be called */ void ... Q_SIGNALS: // a Qt signal void qtSignal ... C++ Qt 66 - QTCPSocket using signals and slots - YouTube
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Passing class pointer (with QVariant as member) between ... Hi, as topic partially described, I send custom class pointer via sig/slot between the main thread and the worker thread. I use the Controller - Worker approach from qt docs. Everything was fine when I have two int members in class, and it started crashin... Signals & Slots — Qt for Python Signals and slots are loosely coupled: A class which emits a signal neither knows nor cares which slots receive the signal. Qt’s signals and slots mechanism ensures that if you connect a signal to a slot, the slot will be called with the signal’s parameters at the right time. Signals and slots can take any number of arguments of any type.
Can't compile when using a pointer parameter in a signal/slot
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New Signal Slot Syntax - Qt Wiki
The reason why we pass &slot as a void** is only to be able to compare it if the type is Qt::UniqueConnection. We also pass the &signal as a void**. It is a pointer to the member function pointer. (Yes, a pointer to the pointer) Signal Index. We need to make a relationship between the signal pointer and the signal index. We use MOC for that. Signals & Slots — Qt for Python An overview of Qt’s signals and slots inter-object communication mechanism. Signals and slots are used for communication between objects. The signals and slots mechanism is a central feature of Qt and probably the part that differs most from the features provided by other frameworks. Best practice for passing pointers as sender for async signals
Qt 4.6: Signals and Slots - Developpez.com