[FIXED] How can I capture QKeySequence from QKeyEvent depending on current keyboard layout?

Issue

I need to do this for configuring my application. I have QLineEdit field with reimplemented keyPressEvent method.

QKeyEvent *ke = ...
QString txt;

if(ke->modifiers() & Qt::ControlModifier)
    txt += "Ctrl+";
if(ke->modifiers() & Qt::AltModifier)
    txt += "Alt+";
if(ke->modifiers() & Qt::ShiftModifier)
    txt += "Shift+";

if(ke->key() >= Qt::Key_0 && ke->key() <= Qt::Key_9)
    txt += ('0' + ke->key() - Qt::Key_0);
else if(ke->key() >= Qt::Key_A && ke->key() <= Qt::Key_Z)
    txt += ('A' + ke->key() - Qt::Key_A);
ui->hotkeyEdit->setText(txt);

But this solution can create shortcuts only with english chars. For example when I use russian keyboard layout, this code will display the same sequence but with english char, placed on the same keyboard key.

Solution

What you might find very useful is the function QKeySequence().toString().

The following is a part of a code that I use to capture User Defined Shortcuts. With some modifications it can do whatever you need in your project. Hope it helps (sorry for the crapped identation):

if (event->type() == QEvent::KeyPress){ 
    QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event); 

    int keyInt = keyEvent->key(); 
    Qt::Key key = static_cast<Qt::Key>(keyInt); 
    if(key == Qt::Key_unknown){ 
        qDebug() << "Unknown key from a macro probably"; 
        return; 
    } 
    // the user have clicked just and only the special keys Ctrl, Shift, Alt, Meta. 
    if(key == Qt::Key_Control || 
        key == Qt::Key_Shift || 
        key == Qt::Key_Alt || 
        key == Qt::Key_Meta)
    { 
        qDebug() << "Single click of special key: Ctrl, Shift, Alt or Meta"; 
        qDebug() << "New KeySequence:" << QKeySequence(keyInt).toString(QKeySequence::NativeText); 
        return; 
    } 

    // check for a combination of user clicks 
    Qt::KeyboardModifiers modifiers = keyEvent->modifiers(); 
    QString keyText = keyEvent->text(); 
    // if the keyText is empty than it's a special key like F1, F5, ... 
    qDebug() << "Pressed Key:" << keyText; 

    QList<Qt::Key> modifiersList; 
    if(modifiers & Qt::ShiftModifier) 
        keyInt += Qt::SHIFT; 
    if(modifiers & Qt::ControlModifier) 
        keyInt += Qt::CTRL; 
    if(modifiers & Qt::AltModifier) 
        keyInt += Qt::ALT; 
    if(modifiers & Qt::MetaModifier) 
        keyInt += Qt::META; 

    qDebug() << "New KeySequence:" << QKeySequence(keyInt).toString(QKeySequence::NativeText); 
}

Answered By - Tihomir Dolapchiev

Answer Checked By - Dawn Plyler (PHPFixing Volunteer)