Qt signal slot get caller

In particular, it determines whether a particular signal is delivered to a slot immediately or queued for delivery at a later time. With queued connections, the parameters must be of types that are known to Qt's meta-object system, because Qt needs to copy the arguments to store them in an event behind the scenes.

Mapping Many Signals to One - Qt Documentation The next step is to merge the buttonNClicked() slots into one ... This is possible using the QObject::sender() function, as we will see shortly. ... of widget and forget to change the cast, you will get a crash. 20 ways to debug Qt signals and slots | Sam Dutton's blog Oct 3, 2008 ... Use break points or qDebug to check that signal and slot code is ... check that SIGNAL and SLOT are capitalised and that the sender and ..... Used an abstraction as workaround to get templates AND moc Slots/Signals Getting the pointer of a widget that emitted a signal in a slot ... Dec 7, 2009 ... For example, does a slot know anything of the caller that emitted the signal? Put another way, can a slot obtain the pointer of the widget that ... Getting the most of signal/slot connections : Viking Software – Qt Experts

Qt 4.8: Signals & Slots

VTK: vtkEventQtSlotConnect Class Reference Manage connections between VTK events and Qt slots. vtkEventQtSlotConnect provides a way to manage connections between VTK events and Qt slots. qobject_p.h source code [qtbase/src/corelib/kernel/qobject_p.h ... 7, ** This file is part of the QtCore module of the Qt Toolkit. 8, ** .... 134, // linked list of connections connected to slots in this object. 135, Connection * next ... 202, : receiver(receiver), sender(sender), signal(signal). 203, { ... When the object gets. Qt Signals And Slots - Programming Examples

New Signal Slot Syntax - Qt Wiki

Qt MOOC | Part 2 - GitHub Pages

Use new signal and slot syntax for cleaner code | CrossControl

25 Jan 2017 ... We can get rid of the startCall() method using a lambda: ... Just like a classic signal-slot connection, if the context object thread is not the same ... Signals and Slots in Depth | C++ GUI Programming with Qt4 - InformIT

Qt: Сигналы и слоты (выдержка из документации Qt 4.x)

Sep 4, 2016 ... Signal-Slot is one of the fundamental topics of Qt one should have a firm ... I am getting the changedValue pyqtSignal using the dot notation, ... PySide/PyQt Tutorial: Creating Your Own Signals and Slots - Python ... Feb 6, 2013 ... An introduction to creating PySide/PyQt signals and slots, using ... You don't have to rely solely on the signals that are provided by Qt ..... We now have signals that carry data, so we'll see how to make slots that can receive it. Passing extra arguments to Qt slots - Eli Bendersky's website Jul 9, 2011 ... A few months ago I wrote about passing extra arguments to slots in PyQt. ... #2 connect(m_action_file_new, SIGNAL(triggered()), m_sigmapper, ... table mapping the sender QObject* to the argument (filled in setMapping).

New Signal Slot Syntax - Qt Wiki