QSpinBox - specialValueText problem - wont accept 'backspace' or 'del' keypresses

[spirit]

you can use QObject::installEventFilter for catching event from lineEdit. i.e. if you need to handle QFocusEvent you should do the following:

SomeClass::SomeClass(QWidget *parent): QWidget(parent) 
{
   ....
   lineEdit->installEventFilter(this);
   ...
}
 
bool SomeClass::eventFilter(QObject *o, QEvent *e)
{
   if (o && (o == lineEdit) && (e->type() == QEvent::FocusIn)) {
        //do what you need
   }
   return QWiget::eventFIlter(o, e);
}

SomeClass::SomeClass(QWidget *parent): QWidget(parent) 
{
   ....
   lineEdit->installEventFilter(this);
   ...
}

bool SomeClass::eventFilter(QObject *o, QEvent *e)
{
   if (o && (o == lineEdit) && (e->type() == QEvent::FocusIn)) {
        //do what you need
   }
   return QWiget::eventFIlter(o, e);
}

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