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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).

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PyQt equivalent of "keydown" event?

In PyQt I could define a keyPress and a keyRelease event, however, the keyPress event is triggered continously as long as the key is down, whereas I'd prefer an event that is triggered once when the key is first pressed down. Is there such a…
Zuoanqh
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How to post Key Combination events in Qt like CTRL-L

I know how to post single key event QKeyEvent *poKeyEvent = new QKeyEvent ( QEvent::KeyPress, Qt::Key_Enter, Qt::NoModifier); QCoreApplication::postEvent (this, poKeyEvent); Now I want to post a combination of key events for example…
Simon
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QKeyEvent with multiple shift/control modifiers

I have a USB device with 6 buttons that I am trying to use with my app. The document for the device lists the key mappings for each button. One of these button for example is said to map to Ctrl+Shift+F20. Coding this though does not work: The code…
TenG
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QWebEngineView, post KeyEvents inside the View

I have my own "Virtual Keyboard". I already got to transform buttons clicked into KeyEvents and deliver it to QTextEdit and so on. My problem now is that I want to do the same for writable areas inside a QWebEngineView. For example, I use my…
yurisnm
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send keystrokes from unicode string pyqt pyside

I need to simulate keystrokes in pyqt4 or pyside, I already have the following code which is fine but it adds only capital Latin letters, no small or other languages letters are allowed def sendkeys(self, char, modifier=QtCore.Qt.NoModifier): …
Mohamed Yousof
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QLineEdit not updating text with QKeyEvent

I'm trying to implement a virtual keyboard widget. The simplest way I could think of is to create QKeyEvent instances and send them with QApplication.postEvent() to the widget in focus. First, I'm trying to update a fixed QLineEdit that I have, so…
Daniel Severo
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QKeyEvent handling non-latin layouts

What is the way to handle non-latin keys pressed with Qt? For example, for 'W' key pressed QKeyEvent::key() returns 87, but for 'Ц' - the same key in the russian layout - it returns 1062. So I can't use constants like Qt::Key_W for checking which…
mvlabat
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Qt - know whether a pressed key is just a modifier

I'd like the child's handling of QKeyEvent not to be executed when it's just a modifier key that's being pressed. The following code does the job, but it's unwieldy to list them all like that. Is there a built-in way to do that? void…
LogicStuff
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QKeyEvent in my app does not work

I want to program a retro snaker that responds to my keyevents, here's my code: paint.h #ifndef PAINT_H #define PAINT_H #include #include #include #include class paint:public QWidget { Q_OBJECT public: …
socket
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QApplication does not handle key event?

QApplication app(argc, 0); MyDialog * pDlg = new MyDialog(0, Qt::WindowTitleHint | Qt::CustomizeWindowHint); if (qApp) qApp->installEventFilter(pDlg); In main(), I just install a event filter for qApp. Then in MyDialog.cpp: bool…
Royt
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Qt - Capturing QKeyEvent from /dev/input/event1 in embedded linux device (EGLFS)

I'm trying to get QKeyEvents on keypress/keyrelease on linux embedded device(EGLFS) which uses custom keypad. /dev/input/event1 is the keyevent file. With evtest the output is as expected. But in the Qt application running on EGLFS platform, the…
Chandana
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How to call defined slots from keypress event in qt / How to connect keypressed event with QPushbutton on gui?

I am beginner to qt. I was working on calculator gui application, I have already defined slots like numPressed() when any of the number pushbutton is pressed on the calculator that will be displayed on the lineEdit. void Calculator::numPressed(){ …
Karthikgr
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QKeyEvent::text() doesn't return accent letter on Linux

Does anyone know why QKeyEvent::text() for typing ` + a returns one empty string and one letter a instead of one empty string and à on Linux? Under Windows this seems to be working fine (same application running under Windows and Linux). I'm…
Damir Porobic
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Trouble with Event Filter for key presses

I am trying to learn how to make software with GUIs using QtCreator. I've done some programming before, but never anything this involved. So far, I have made a window with 5 items: 2 labels, 1 button, 1 lineEdit, and 1 listWidget. My goal is to be…
wftmate
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Qt widget does not receive keyPressEvent

My child widget does not get keyPressEvents, while if I put the same widget as top level window, it does. I try to set it get focus, but it has no effect on this. Code is below, showing what I try to get to work. #include #include…
hyde
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