Static assertion failed signal and slot arguments are not compatible

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Section 17 Assertions - Michigan

This section describes the RAD Studio C++ compiler error and warning messages. Topics .... Dynamic functions occupy a slot in every object that defines them, not in any .... E2397: Template argument cannot have static or local linkage (C++) ...... the exception so that it doesn't occur, or by catching the exception with signal. Qt C++: static assertion failed: Signal and slot arguments ... and the signal (valueChanged) arguments was different from the slot (updateValue) arguments, this will make the compiler to try implicit conversion of the signal and slot arguments and you have one of 2 possibilities: 1. The compiler will try to make auto conversion (implicit conversion) and the conversion succeeded. 2. QT5 Radio button signal not compatible with function, even ... I know this is not answer to your question, but try passing functor instead of SLOT for slot as you do with signal part. – Michał Walenciak Aug 7 '16 at 20:28 @MichałWalenciak Just edited my question, I'm trying to understand the problem, according to the new QT5 Signals & Slots, this should work. – areuz Aug 7 '16 at 20:33 How Qt Signals and Slots Work - Part 2 - Qt5 New Syntax

@JuhaSim said in Qt slot with default arguments not working: Is this a bug? no, default arguments for slots is a feature for Qt4 Syntax only, the Qt5 one does not support it, sadly enough. You have two options: QTimer::singleShot(6000, this, SLOT(slot()); This may be wrong, been a while since I used Qt4 with default argument! or a lambda

coding style - Is it good practice to have your C++/Qt functions ... 18 Jun 2018 ... This will bring your application to a grinding halt if the assertion fails, showing ... work with all operators compatible with the referee seems quite powerful. ... an argument in a slot call whose value will not be set at the very least to a ... &c, SLOT(myMethod2(QString))); Q_ASSERT(!r); // fails - no such signal r ...

From the documentation of signal and slots: The signature of a signal must match the signature of the receiving slot. Therefore I would say that no, it is not possible. Is there a way to fix this? As an example, if you compiler support C++11, you can use a lambda function. Something like this:

From the documentation of signal and slots: The signature of a signal must match the signature of the receiving slot. Therefore I would say that no, it is not possible. Is there a way to fix this? As an example, if you compiler support C++11, you can use a Qt slot with default arguments not working | Qt Forum @JuhaSim said in Qt slot with default arguments not working:. Is this a bug? no, default arguments for slots is a feature for Qt4 Syntax only, the Qt5 one does not support it, sadly enough. Qt: Cannot queue arguments of type MyClass - Stack Overflow

c++ - Qt: Default Parameters for function called by Signal ...

connect(&obj, &SenderObject::signal1, this, [this, &status ... connect(&obj, &SenderObject::signal1, this, [this, &status, &obj] (int test) { status = 2; QCOMPARE(sender(), &obj); }, Qt::QueuedConnection); How to use methods of an object from a different class ... I have a serial object in my mainwindow.cpp in which I can succesfully write and send bytes to an arduino. I can open a new window with a keyboard: [QTBUG-58054] Impossible to connect signal to noexcept pmf ... when trying to connect a signal to a noexcept pmf, the following static_assert triggers: Qt C++: static assertion failed: Signal and slot arguments ...

[ 81%] Building CXX object plugins/platforms/hwcomposer/CMakeFiles/KWinWaylandHwcomposerBackend.dir/KWinWaylandHwcomposerBackend_autogen/mocs_compilation.cpp.o

Signals & Slots | Qt Core 5.12.3 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. Qt 5 中信号槽新语法的实现 - DevBean Tech World 好吧，，在使用Qt5新版的信号槽新语法的时候，发现最后一个槽在有函数重载的时候，，几乎编译不过了，，好蛋疼，这个要 ... Qt slot with default arguments not working @JuhaSim said in Qt slot with default arguments not working: Is this a bug? no, default arguments for slots is a feature for Qt4 Syntax only, the Qt5 one does not support it, sadly enough. You have two options: QTimer::singleShot(6000, this, SLOT(slot()); This may be wrong, been a while since I used Qt4 with default argument! or a lambda