Qt slot function return value
This guide shows how to enhance your C++ class with signals and slots for ... In other words, we want to trigger functions in QML when the C++ property changes. .... No further adjustments are required to receive the return value in QML. Qt ...
Qt 5 and C++11: Lambdas Are Your Friend | Custom Software ... 12 Sep 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 ... PythonQt: Developer the PythonQt::addObject() method; when a Qt slot returns a QObject derived object to python; when a Qt signal contains a QObject and is connected to a python function ... in a natural way by calling their slots and receiving the return values. Signals and Slots in C++ - sigslot - SourceForge Signals are connected by calling the signal's connect() member function. ... 3Other signal/slot approaches do allow values to be returned, but I found this to be .... I wrote the sigslot library because, after some time programming in the Qt ...
I'm running all my SQLite database operations in a separate thread to ensure that the GUI wont freeze up. I'm doing this by connecting up signals and slots for the methods. However now I need to
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.
Signals and Slots - Qt Documentation
Looking through the Qt source it seems that when a slot is called from QMetaObject::invokeMethod the return type can be specified and the return value obtained. (Have a look at invokeMethod in the Qt help) I could not find many examples of this actually being used in the Qt source. One I found was. Getting a return value from an emitted signal | Qt Forum
self.sp = QSlider(Qt.Horizontal) self.sp = QSlider(Qt.Vertical) ... The slot function valuechange() reads current value of the slider and uses it as the size of font for ...
Signals and Slots in C++ - sigslot - SourceForge Signals are connected by calling the signal's connect() member function. ... 3Other signal/slot approaches do allow values to be returned, but I found this to be .... I wrote the sigslot library because, after some time programming in the Qt ... Lambda Expressions and Qt 4.x - Silmor.de
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