How to use QKeyEvents in Qt

Article Metadata

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Tested with

Devices(s): S60 Emulator

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Compatibility

Platform(s): Qt 4.5

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Article

Keywords: QKeyEvents

Created: mind_freak (26 Jul 2009)

Last edited: hamishwillee (11 Oct 2012)

Overview

This example shows how you can send key events to the widget with keyboard input focus when keys are pressed or released. A key event contains a special accept flag that indicates whether the receiver will handle the key event.

Classes used in this code: QKeyEvents-Describes a key event.

Event Code

void my_app::clicked0 () //For tab Event
{
    QKeyEvent key(QKeyEvent::KeyPress, Qt::Key_Tab, Qt::NoModifier, "Tab", false, 0 );
    QApplication::sendEvent(this, &key);
}
 
void my_app::clicked1 () //For tab shift
{
    QKeyEvent key(QKeyEvent::KeyPress, Qt::Key_Tab, Qt::ShiftModifier, "Tab-Shift", false, 0 );
    QApplication::sendEvent(this, &key);
}
 
void my_app::clicked2 () //For space
{
    QKeyEvent key(QKeyEvent::KeyPress, Qt::Key_Return, Qt::NoModifier, "Return", false, 0 );
    QApplication::sendEvent(this, &key);
}
 
void my_app::clicked3 () //For enter Event
{
    QKeyEvent key(QKeyEvent::KeyPress, Qt::Key_Space, Qt::NoModifier, "Space", false, 0 );
    QApplication::sendEvent(this, &key);
}