How to make LineEdit show all text in uppercase

[Kryzon]

Try the following: just create a copy of the event with the Text property in uppercase version and pass it to the base implementation.

void MyLineEdit::keyPressEvent( QKeyEvent* event )
{
    event.accept();
 
    QKeyEvent* modifiedEvent = new QKeyEvent( QEvent::KeyPress, event->key(), event->modifiers(), event->text().toUpper() );
    QLineEdit::keyPressEvent( modifiedEvent );
}

void MyLineEdit::keyPressEvent( QKeyEvent* event )
{
    event.accept();

    QKeyEvent* modifiedEvent = new QKeyEvent( QEvent::KeyPress, event->key(), event->modifiers(), event->text().toUpper() );
    QLineEdit::keyPressEvent( modifiedEvent );
}

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To quote myself as I can't edit that post, instead of creating the event in the heap like that (which is flawed in that it should lead to a leak), creating it in the stack is the right way.

QKeyEvent modifiedEvent( QEvent::KeyPress, event->key(), event->modifiers(), event->text().toUpper() );
QLineEdit::keyPressEvent( &modifiedEvent );

QKeyEvent modifiedEvent( QEvent::KeyPress, event->key(), event->modifiers(), event->text().toUpper() );
QLineEdit::keyPressEvent( &modifiedEvent );

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The temporary event will be destroyed after the base implementation processes it.