Jinak to že u hlaviček nejsou šipky si nevšímejte, nechtělo mi to sem povolit... #include QApplication #include QPushButton #include QLabel #include QHBoxLayout //slouží k zarovnání prvků, snažší než zadávat souřadnice #include QCheckBox … Qt c++ signály a sloty (vyřešeno) Ty signály se dají udělat i v Qt Designeru, pro tebe asi bude nejlepší použít Qt Creator tam si založit projekt vše si na klikat poté kliknout pravým tlačítkem na to tlačítko a tam je Go to slot, tam si vybereš požadovanou akci u tebe asi … Jednoduchý dialog pomocí Qt 4.1 Signál a slot pro toto tlačítko si později napíšeme ve vlastní odvozené třídě CSimpleDialog Qt framework – základy práce (2) -Linux Software
V závěrečném dílu seriálu o tvorbě plasmoidů si ukážeme, jak lze do plasmoidu posílat vstup pomocí metody drag&drop a jak se přidává konfigurační dialog.
New Signal Slot Syntax - Qt Wiki Connecting in Qt 5. There are several ways to connect a signal in Qt 5. Old syntax. Qt 5 continues to support the old string-based syntax for connecting signals and slots defined in a QObject or any class that inherits from QObject (including QWidget) . connect( sender, SIGNAL( valueChanged( QString, QString ) ), receiver, SLOT( updateValue( QString ) ) ); qt - How to connect a qml child component signal to a c++ ... I want to connect a child item component signal to a c++ slot but it is not working. I have one file ButtonItem.qml in which the code is like Item { id: button property string label Qt connect signal to slot - Stack Overflow connect(test_btn, SIGNAL(clicked()), SLOT(test_function())); The widgets and buttons appear as expected in the application but when I click it nothing happens. If I add the same connect code to the main window it works (for calling a test function from the main window) i.e. Signals and Slots - Qt Documentation
Signals & Slots | Qt 4.8
qt documentation: Connecting overloaded signals/slots. Example. While being better in many regards, the new connection syntax in Qt5 has one big weakness: Connecting overloaded signals and slots. New Signal Slot Syntax - Qt Wiki Connecting in Qt 5. There are several ways to connect a signal in Qt 5. Old syntax. Qt 5 continues to support the old string-based syntax for connecting signals and slots defined in a QObject or any class that inherits from QObject (including QWidget) . connect( sender, SIGNAL( valueChanged( QString, QString ) ), receiver, SLOT( updateValue( QString ) ) ); [SOLVED] Connecting custom parent's slot to child's signal EDIT: Problem was the cyclic include of header. Solved by forward-declaration. Here is the problem: I have a QObject based custom class which I parse as parent to another QObject based child class. I need to connect the parent's custom slot to child's custom signal in the child's constructor. Qt connect signal to slot - Stack Overflow In main_window::add_splitter(), the oc_point is destroyed as soon as the function returns. It's not the connection that is the problem, the problem is that your object vanishes before you can do anything useful with it. Below is a self-contained example that demonstrates this problem in both Qt 4 and 5.
[SOLVED] Connecting custom parent's slot to child ... - Qt Forum
qt - connecting signal/slot across different threads ... I wanted to know what is the best practice to connect signal/slots between two QObjects created in the contructor of MainWindow but moved to different threads later...default connections seems not working then when I connect with the option Qt::Directconnection things start working...but sometimes the signal/slot fails...following is my code ... qt - How to connect a qml child component signal to a c++ ...
I have a QObject based custom class which I parse as parent to another QObject based child class. I need to connect the parent's custom slot to child's custom signal in the child's constructor. The reason is that if something goes wrong on initialization of the child class it emits this signal which the parent receives and stops the app.
PyQt/Sending Python values with signals and slots - Python Wiki Jun 5, 2014 ... ... about sending Python values via Qt's signals and slots mechanism. ... value declaration with an old-style signal-slot connection, and again ... 4 5 class Window(QWidget): 6 7 def __init__(self, parent = None): 8 9 QWidget.
Signals & Slots | Qt 4.8 Signals and slots are loosely coupled: A class which emits a signal neither knows nor cares which slots receive the signal. Qt's signals and slots mechanism ensures that if you connect a signal to a slot, the slot will be called with the signal's parameters at the right time. Signals and slots can take any number of arguments of any type. qt - How to connect a qml child component signal to a c++ ... I want to connect a child item component signal to a c++ slot but it is not working. I have one file ButtonItem.qml in which the code is like Item { id: button property string label New Signal Slot Syntax - Qt Wiki