c++ - Updating pointer using signals and slots - Stack Overflow All signal-slot connections are direct (i.e. slot is invoked synchronously inside emit) by default, so it might be OK to pass pointer to local variable. Much better solution is to pass your structure by value, just like MSalters recommends. – chalup Apr 14 '10 at 13:39 QMetaType Class | Qt Core 5.12.3 Q_DECLARE_SMART_POINTER_METATYPE (SmartPointer) This macro makes the smart pointer SmartPointer known to QMetaType as a smart pointer. This makes it possible to put an instance of SmartPointer
Why I dislike Qt signals/slots (Originally posted on Sunday, February 19th, 2012.) I've created over a dozen small projects using Qt by now. Most of the time I think I might as well make use of Qt's signals/slots system -- I mean it's already there.
Особенность работы со смарт-поинтерами в Qt / Хабр Смарт-поинтеры является очень важным механизмом управления временем жизни объектов. В Qt присутствует модель управления временем жизни объектов, когда объекты наследуются от базового класса QObject и задается “родство” — parent/child. C++ QT: Function Taking Pointer To Signal And Slot… QT 5.1: To remove redundant code I want to outsource the common logic the following two function calls contain: client.cpp … So Client::mqtt.get() and the context this always stay the same.
Особенность работы со смарт-поинтерами в Qt / Хабр
Best practice for passing pointers as sender for async signals Im new to Qt and dont really unterstand the behaviour of Qt's smart pointers. I read the documentation, searched for examples which fit my needs and experimented with QScoped and QSharedPointer, but couldn't find a fullfilling solution for me. ... Best practice for passing pointers as sender for async signals Best practice for passing pointers ...
boost shared pointers and QT signal and slots - c++
How do you deal with memory management and signal/slots? How do you deal with memory management and signal/slots? ... Qt has its own smart pointer class QSharedPointer ... Just emit another signal in the slot where the ... How Qt Signals and Slots Work - Woboq Qt is well known for its signals and slots mechanism. But how does it work? In this blog post, we will explore the internals of QObject and QMetaObject and discover how signals and slot work under the hood. In this blog article, I show portions of Qt5 code, sometimes edited for formatting and brevity.
It's still a raw pointer. It just fits into a line on this forum :P. auto is not a type or a smart pointer or anything like that. It's just a way to tell the compiler to figure out the type of expression.
Is it safe to emit signal passing QObject pointer as parameter right before the passed object is going to be destroyed? ... QObject dtor is not trivial, so ~Surface is considered not trivial either anyways. As per c++ standard dereferencing a pointer of an object, whose non-trivial destructor was called is UB. ... Qt signals/slots: Is it an ... Signals & Slots | Qt 4.8
c++ - Cannot receive data when using Signal & Slot in QT ... Cannot receive data when using Signal & Slot in QT. Ask Question 0. I have 2 forms which is created by QT Creator. I have used Signal & Slot to transfer data between those 2 forms. But I can't receive any data. ... What is a smart pointer and when should I use one? 2262. c++ - Is it safe to emit signal passing QObject pointer as ... Is it safe to emit signal passing QObject pointer as parameter right before the passed object is going to be destroyed? ... QObject dtor is not trivial, so ~Surface is considered not trivial either anyways. As per c++ standard dereferencing a pointer of an object, whose non-trivial destructor was called is UB. ... Qt signals/slots: Is it an ... Signals & Slots | Qt 4.8