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Questions tagged [qkeyevent]

The QKeyEvent class, part of the Qt framework, describes a key event.

Documentation can be found here (Qt4) and here (Qt5).

73 questions
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Get the "name" of a key from QKeyEvent in Qt

Is there an easy way of getting the name of a key (so something like "uparrow" from a key event instead of just getting the key code "16777235")? Do I have to make a list of key names myself?
Ben
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How can I disable Alt + F4 window closing using Qt?

I've disabled X button in Qt from my dialog using this line: myDialog->setWindowFlags(Qt::Dialog | Qt::Desktop) but I couldn't detect Alt + F4 using this code: void myClass::keyPressEvent(QKeyEvent *e) { if ((e->key()==Qt::Key_F4) &&…
Mohammad Sheykholeslam
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Qt Key Pressevent Enter

void LoginModle::keyPressEvent(QKeyEvent *event) { qDebug() << event->key() << "\t" << Qt::Key_Enter << "\t" << QKeyEvent::Enter; if( event->key() == Qt::Key_Enter) OKButtonClicked(); else …
Anudorannador
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How to convert a Windows native virtual key code to Qt::Key?

I am working on a program which communicates with a windows native program, so it needs the actucal native virtual key code. How to convert from a Windows native virtual key code to Qt::Key?
jay
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4 answers

Qt keyPressEvent not registering when W/A/S/D keys are pressed

I have an app (not related to any game where the W/A/S/D keys may have special meanings for navigation) where there is a QFrame. I overrode the keyPressEvent() to get the text being typed through keyboard while focus in on that QFrame. This is my…
SexyBeast
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Always have focus policy on hidden widget? (Qt C++)

I am learning to process keypress and keyrelease events in Qt (C++). I have a class Keyboard with which I want to process all of these events. It inherits QObject. It doesn't need to process any mouse events. I am trying to figure out how I can…
John
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Qt sending keyPressEvent

I want to append chars to QLineEdit by sending KeyEvent. I'm using code like this: ui.myEdit->setFocus(); for(size_t i = 0; i < 10; ++i) { QKeyEvent keyPressed(QKeyEvent::KeyPress, 'a', Qt::NoModifier); QWidget::keyPressEvent(&keyPressed); //…
user3369485
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Overriding keyPressEvent in QTextEdit subclass

I have the following example in Qt in which I try to override the keyPressEvent of a subclass of QTextEdit, but gives me a "multiple definition of txt::keyPressEvent(QKeyEvent*)" and I can't figure out why: //txt.h #ifndef TXT_H #define…
Nini Michaels
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How to check if [Shift + Tab] is being pressed in QT

How would one check if the SHIFT key is held and the TAB key is pressed with a QKeyEvent? I've tried using: (event->key() == Qt::Key_Tab && event->modifiers() == Qt::ShiftModifier) However, the event->key() is not equal to Qt::Key_Tab whenever the…
Griffort
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How to synthesize key press events?

I am able to get key value's from HAL through a call back function in Qt. Created event for that key by QKeyEvent *event = new QKeyEvent (QEvent::KeyPress, inputKey.keyValue, …
Lalatendu
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how to detect a key release in pyqt

I want to create a PyQt5 window (Windows OS) which recognizes a button click with holding CTRL button. I successfully created a handler which recognizes CTRL key press but it couldn't find the pressing and releasing of a button which i need to call…
Siva Manasan
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How to call qt keyPressEvent(QKeyEvent *event) from qml Keys.onPressed

I have a qml Window with an Item which has Keys.onPressed { } And I have a c++ class which has protected: void keyPressEvent(QKeyEvent *event); What needs to go inside the Keys.onPressed? I have tried …
mango
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Qt - How to convert Qt::Key into nativeVirtualKey

How can I convert a Qt::Key (eg. Qt::Key_At) into nativeVirtualKey code outside of a keyPressEvent() or a keyReleaseEvent()?
Junior
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Limit QKeySequence/QKeySequenceEdit to only one shortcut

Is it possible to limit QKeySequence to show only one shortcut in QKeySequenceEdit? Currently now it supports up to 4 shortcuts. My application supports key sequences of only one shortcut, e.g. Ctrl+A or Ctrl+C and not e.g. Ctrl+A, D or Ctrl+C, X,…
Jacob Krieg
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PyQt QTableView - Capture KeyDown / KeyPress Event

I would like to capture a Key Down Event on a QTableView. I would also like to determine, if it was a keydown on DEL button, my QTableView is created like this (from QtCreator): self.tblview_data_sources =…
Project_Prkt
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