Top "Signals-slots" questions

Signals and slots is a mechanism for implementing the observer pattern.

How to emit cross-thread signal in Qt?

Qt documentation states that signals and slots can be direct, queued and auto. It also stated that if object that …

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C++ signal to QML slot in Qt

I want to send a Signal from C++ to a Slot in my QML File. I already got it working …

c++ qt qml signals-slots
PyQt proper use of emit() and pyqtSignal()

I am reading through some documentation on PyQt5 to come up with a simple signal-slot mechanism. I have come to …

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How to implement a simple button in PyQt

I want to implement a simple button in PyQt which prints "Hello world" when clicked. How can I do that? …

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Prevent Firing Signals in Qt

We have a QCheckBox object, when user checks it or removes check we want to call a function so we …

c++ qt checkbox signals-slots
Qt signaling across threads, one is GUI thread?

What does it mean to move a object from one thread to another in Qt using moveToThread? Everything seems to …

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Qt "private slots:" what is this?

I understand how to use it, but the syntax of it bothers me. What is "private slots:" doing? I have …

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qt QWidget click

I have my own class based in QWidget. I put this widget in QMainWindow and I need catch mouse click …

c++ qt signals-slots
Can Qt signals return a value?

Boost.Signals allows various strategies of using the return values of slots to form the return value of the signal. …

c++ qt return-value signals-slots boost-signals
Qt connect "no such slot" when slot definitely does exist

Qt v4.8.0, VC2010 compiler I have a QMainWindow based class and I'm trying to send it signals involving QUuid However, …

qt signals-slots