In the desired scenario, all my widgets would derive from this base class with the virtual slot, so that by default all of my widget instances would be connected to the desired signal with a slot defined for the object (with default behavior from the base class). I know that virtual slots are allowed in Qt. No such slot... | Qt Forum The problem is most probably this: SLOT(this->ResponseOneClicked()) - remove this->. No need to use QObject:: in front of connect. No need to use this-> in this->disableAndHide(); No need to use this-> in this->getResponseOne() Why do you call this->getResponseOne() to get the pointer to the button? Don't you have the pointer in the same class QT no such slot with Q_Object | Qt Forum I'm working on wireshark source code and i've just add a new class with one slot. hskoglund : I already tried with another name like test_slot that i'm pretty sur there is no similar name but still doesn't work. c++ - Connect to protected slot in derived class - Stack Connect to protected slot in derived class. Ask Question 7. 2. Qt: bring base class method into slots in derived class. 5. Qt connect “no such slot” when slot definitely does exist. 5. Qt can I connect signals/slots to self in constructor? 3.
The Observer pattern has many existing implementations. Deák Ferenc presents a new implementation using modern C++ techniques.
QObject Class | Qt Core 5.12.3 The QObject class is the base class of all Qt objects. QObject is the heart of the Qt Object Model. The central feature in this model is a very powerful mechanism for seamless object communication called signals and slots. You can connect a signal to a slot with connect() and destroy the connection with disconnect(). Connect with derived class | Qt Forum Qt Development General and Desktop Connect with derived class ... QObject::connect: No such slot QCcmStatusPanel::DistributorDepthSlot(int) complaining that the base class doesn't have the slot that is defined in the base class. Is there something I have to do in connect for this to work? Reply Quote 0.
[solved] unable to accessing signal 'textChanged' from ...
Qt for Beginners - Qt Wiki QObject is the most basic class in Qt. Most of classes in Qt inherit from this class. QObject provides some very powerful capabilities like: object name : you can set a name, as a string, to an object and search for objects by names. parenting system (described in the following section) signals and slots (described in the next chapter) event ... Why is Qt looking for my slot in the base class instead of derived ... Did you add the Q_OBJECT macro on the derived class? Signal/slot looking in base class, not derived class - Qt Centre
c++ - Connect Qt signal and slot in a derived QObject
QGuiApplication Class | Qt GUI 5.12.3 This property gives a precise indication of what desktop entry represents the application and it is needed by the windowing system to retrieve such information without resorting to imprecise heuristics. Drag and Drop | Qt GUI 5.12.3 void DragWidget ::mouseMoveEvent( QMouseEvent *event) { if ( !(event - >buttons() & Qt ::LeftButton)) return; if ((event - >pos() - dragStartPosition) .manhattanLength() < QApplication ::startDragDistance()) return; QDrag *drag = new QDrag( … Calculator Example | Qt Widgets 5.12.3 The private createButton() function is used as part of the widget construction. abortOperation() is called whenever a division by zero occurs or when a square root operation is applied to a negative number. Places (C++) | Qt Location 5.12.3
Why is Qt looking for my slot in the base class instead of ...
Qt Script Although such a method is not a slot, you can still specify it as the target function in a call to connect() in script code; connect() accepts both native and non-native functions as targets. QAbstractItemView Class | Qt Widgets 5.12 If no editor exists, the delegate will create a new editor. QIODevice Class | Qt Core 5.12.2
Although such a method is not a slot, you can still specify it as the target function in a call to connect() in script code; connect() accepts both native and non-native functions as targets. QAbstractItemView Class | Qt Widgets 5.12 If no editor exists, the delegate will create a new editor. QIODevice Class | Qt Core 5.12.2 Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. QQuickItem Class | Qt Quick 5.12.2