Qt signals slots passing arguments

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I understand that qt copies all arguments passed in a queued connection and a qobject cannot be copied. So instead of returning a qobject I thought I would create both qobjects prior to emitting the signal. Then I would pass references to each object, modify one of them in the slot function and void...

Passing extra arguments to Qt slots - Eli Bendersky's website Jul 9, 2011 ... A few months ago I wrote about passing extra arguments to slots in PyQt. ... #2 connect(m_action_file_new, SIGNAL(triggered()), m_sigmapper, ... Qt 4.8: Signals & Slots Signals and slots can take any number of arguments of any type. ... If you pass the Qt::UniqueConnection type, the connection will only be made if it is not a ... Using C++11 Lambdas As Qt Slots – asmaloney.com Mar 13, 2016 ... I still work on it, keeping up-to-date with Qt and C++ as much as possible, .... It also takes optional parameters which is how we'll pass signal ...

Signals and slots - Wikipedia

Signals and slots were one of the distinguishing features that made Qt an exciting and innovative tool back in time. But sometimes you can teach new tricks to an old dog, and QObjects gained a new way to connect between signals and slots in Qt5, plus some extra features to connect to other functions which are not slots. Dynamic Signals and Slots - doc.qt.io The need for the dynamic addition of signals and slots arises when binding a script interpreter, such as Qt Script for Applications (QSA), to the C++ code in your application. In QSA, it is possible to use Qt's meta-object system to communicate between objects created in the C++ code and objects created in a script. New-style Signal and Slot Support — PyQt 4.11.4 Reference Guide

Qt 4.8: Signals & Slots

QObject now supports an additional syntax for connecting signals to slots that forces the compiler to check that both the signal and the receiver exist, and that their arguments are compatible. Dynamic C++ Proposal

QGlib - GStreamer

A few months ago I wrote about passing extra arguments to slots in PyQt.C++ is not as dynamic as Python, so Python's approaches of using lambda or functools.partial won't work [1]. Fortunately, the Qt folks provided a solution that can make passing extra arguments to slots relatively simple.