Questions tagged [qt-connection]
23 questions
0
votes
1 answer
Qt: QTimer create an unwanted loop
I'm reading and plotting data from a serial port using Qt. I'm trying to create a timeout with the QTimer class, who sends in the function "lettura()". It works one time and after creating a loop inside that, is there some way to get out from that…
Matteo Balugani
- 11
- 1
0
votes
1 answer
How to connect QObbject (QPushButton) to a method from other class?
I'm currently working on a project that needs the connection between a QPushButton of a Qwidget class (window) and a void method from a "classical" class.
I've tried to connect them with all the solution that I've read but none works…
Lars
- 11
- 1
0
votes
3 answers
No such slot when connecting widget signal with parent widget slot
I have the following classes:
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QStringList pluginsToStart, QWidget *parent = 0);
~MainWindow();
// some other stuff
public slots:
void…
M F
- 323
- 1
- 3
- 15
0
votes
1 answer
QT Connect QNetworkReply SIGNAL finished() not firing
I had a look at this link and except the signal spy and debugging i tried at least everything. I took the example from this site. I haven't set up the debugger for now.
My problem is that i want to fire a custom slot and nothing is happening.
I…
Eggi
- 170
- 1
- 15
0
votes
2 answers
Python qt4 - passing arguments in QtCore.QObject.connect
I want to react to a mouse click on a QLabel.
To achieve this I have redefined the method mouseReleaseEvent of QLabel.
I want to pass two arguments to the slot:
the QtGui.QMouseEvent
an ID of the clicked QLabel
But I can only pass one parameter.…
pythonic
- 3
- 1
- 3
0
votes
1 answer
connect from a QTab (in a QTabWidget) back to QMainWindow
The main part of my application is a Systray-Menu. For maintenance there should be a normal GUI.
My problem is that now I have to create two Signal/Slot-Connections back to the main window from each tab. This is for minimizing the GUI and to update…
Markus Weber
- 3
- 1
-1
votes
1 answer
Pass multiples arguments to a slot Qt
I'm using a Qt horizontal slider and I want to connect its valueChanged signal to a slot I defined. However I need to access a specific member inside this slot to modify a variable thanks to the int I set with the slider. Until now, my connect line…
user17429375
-1
votes
1 answer
Creating QT UI for multiple tabs and initial combobox
My setup is as follows:
main.cpp
projectQt.cpp
projectQt.h
tab1.h
tab1.cpp
tab2.h
tab2.cpp
projectQt.ui
ui_projectQt.h
I want to create a project with a UI file. In the UI file, I have three comboBoxes and two Apply buttons and in the tab1.cpp and…
CiTi
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