Qt slot function return value

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How to pass parameters to a SLOT function? | Qt Forum

PyQt/Sending Python values with signals and slots - Python ... 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. Qt: meaning of slot return value? - Stack Overflow I think that the return value for a slot is only available when the function is called directly (when it is a normal C++ function) or when using ... Signals & Slots | Qt Core 5.12.3 - Qt Documentation A slot is a function that is called in response to a particular signal. .... int value() const { return m_value; } public slots: void setValue(int value); signals: void ... Return value from slot in differnet thread | Qt Forum

QTextBrowser Class | Qt Widgets 5.12.3

Sep 12, 2013 ... Since Qt 5 was released I had been putting off upgrading to Qt 5 on a project I ... We've eliminated the three slot functions that do basically the same thing ... used in the body by value) connect(pushButton, &QPushButton::clicked, .... and performs functions such as recognizing you when you return to our ... Qt MOOC | Part 2 - GitHub Pages ... Q_OBJECT macro in the private section of the classes definition. ... int value() const { return m_value; } public slots: void ... QML2 to C++ and back again, with signals and slots - andrew-jones ...

Qt MOOC | Part 2 - GitHub Pages

Qt 4.8: QDialog Class Reference The most common way to display a modal dialog is to call its exec() function. When the user closes the dialog, exec() will provide a useful return value. Typically, to get the dialog to close and return the appropriate value, we connect a default button, e.g. OK, to the accept() slot and a Cancel button to the reject() slot. How Qt Signals and Slots Work - Part 2 - Qt5 New Syntax In the function FunctionPointer::call, the args[0] is meant to receive the return value of the slot. If the signal returns a value, it is a pointer to an object of the return type of the signal, else, it is 0. If the slot returns a value, we need to copy it in arg[0]. If it returns void, we do nothing. Qt in Education The Qt object model and the signal slot concept The QObject QObject is the base class of almost all Qt classes and all widgets It contains many of the mechanisms that make up Qt events signals and slots properties PythonQt: PythonQtSlotInfo Class Reference

c++ - QT signal and slot function signature - Stack Overflow

Dec 2, 2012 ... That is right, signals and slots are simple functions: the compiler will handle them .... In our example it is 0 because the return value is void .