Qt signals slots return value
Signals & Slots — Qt for Python
Getting a return value from an emitted signal | Qt Forum I have a plugin architecture. A core application calling the apply filter of a plugin. I would wish to emit a signal with a pointer to a bool from the plugin, blocking the execution of the apply function and when the slot connected with the signal finished the execution check the value of the bool pointer. Signals & Slots | Qt Core 5.12.3 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. They are completely type safe.
c++ - Может ли сигналы Qt возвращать значение?
Can Qt signals return a value? Вот почему. Qt Сигналы синтаксис обсахаренного интерфейса для шаблона сигнализации. Слоты являются получателями сигнала.foreach slot in connectedSlotsForSignal(signal): value = invoke slot with parameters from signal return value. Очевидно, что MOC делает немного больше... QT: работаем с сигналами и слотами
Sending Python values with signals and slots. On the #pyqt channel on Freenode, Khertan asked about sending Python values via Qt's signals and slots mechanism.. The following example uses the PyQt_PyObject value declaration with an old-style signal-slot connection, and again when the signal is emitted, to communicate a Python dictionary.
... A class which emits a signal neither knows nor cares which slots receive the signal. Qt's signals and slots ... return m_value; } public slots ... Support for Signals and Slots — PyQt 5.11 Reference Guide One of the key features of Qt is its use of signals and slots to communicate ... Return type: an unbound signal. ... When the value of the spin box changes both of ... Signals and Slots Signals and Slots. Signals and slots are used for communication between objects. The signal/slot mechanism is a central feature of Qt and probably the part that ... PySide/PyQt Tutorial: Creating Your Own Signals and Slots ...
Signals and Slots in PySide - Qt Wiki
Сигналы и слоты используются для коммуникации между объектами. Механизм сигналов и слотов главная особенность Qt и вероятно та часть, которая отличаетcя от особенностей, предоставляемых другими... c++ signal - Qt:meaning of slot return value? - CODE… The return value is used when making syncrhonous calls across threads inside a Qt application (supported via invokeMethod and setting connectionSo for normal signal-slot interactions the return value is not used for anything at all. However, the mechanism exists so that return values from slots...
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