QPlainTextEdit and input filtering

[paul.schwann]

Hi wysota!

Thanks for your reply. Unfortunately, I am unable to turn your suggestion into working code. I tried:

bool MyQPlaintTextEditor::eventFilter(QObject* obj, QEvent* event) {
  if (event->type() == QEvent::KeyPress) {
    QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);
 
    if ((keyEvent->modifiers() == 0) && (keyEvent->text() != "0") && (keyEvent->text() != "1")) {
      return true;
    }
  } 
 
  // standard event processing
  return QObject::eventFilter(obj, event);
}

bool MyQPlaintTextEditor::eventFilter(QObject* obj, QEvent* event) {
  if (event->type() == QEvent::KeyPress) {
    QKeyEvent* keyEvent = static_cast<QKeyEvent*>(event);

    if ((keyEvent->modifiers() == 0) && (keyEvent->text() != "0") && (keyEvent->text() != "1")) {
      return true;
    }
  } 

  // standard event processing
  return QObject::eventFilter(obj, event);
}

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I still can e.g. press AltGr-0 and get a "}" -> AltGr doesn't seem to be catched by modifiers(). Besides that, the code above doesn't allow me to navigate with cursor keys or use backspace. Do I really have to check all those keycodes and let them though? This seems odd to me. But as I said already: I think that playing with the key codes it too low level for my purpose...

Any other ideas? Thanks a lot!

Regards,
Paul