LineEdit / SpinBox focus in problem

Hi,
I wanted to create custom spin box with following requirements:
- before modified by user, it displays a custom (non-number) text
- when focused (by mouse click), it selects all text, so simple input will overwrite the old one
First I solved by using specialValueText and on the first change I erase it, but Im still struggling with the second... I tried to reimplement focusInEvent, but I never managed to take correct focus and text selected :confused: any idea?

Could you show us what you've done so far?

Everything I remember I tried:

• subclass QSpinBox and reimplement its focusInEvent to do QSpinBox::focusInEvent and then selectAll
• the same with just QLineEdit
• tried to trick event by creating new event QEvent::FocusEvent with reason tab key (which behave the way I would like also click work) and in focusInEvent call QLineEdit::event with this new event
• also I tried to follow QLineEdit::focusInEvent, but it is quite complicated and using staff from QLineEditPrivate class, which I dont know how to access from my subclassed class (and it is really nasty :confused: )
• I created signal connected to selectAll slot and in focusInEvent was like QLineEdit::event and then emit my signal
• default behavior of QAbstractSpinBox::focusInEvent looks quite simple
  
  Code:

  ---

  Q_D(QAbstractSpinBox);
   
  d->edit->event(event);
  if (event->reason() == Qt::TabFocusReason || event->reason() == Qt::BacktabFocusReason) {
      selectAll();
  }
  QWidget::focusInEvent(event);

  ---

  I tried to rewrite this into my subclass' focusInEvent (without first line) and add MouseFocusReason into condition

nothing worked :(
If you're interested how whole class looks like, it is simple subclassed QSpinBox... i needed also reimplement sizeHint, becouse default one is bugged (i guess) and doesnt correctly calculate size for specialTextValue

oh, and if it can somehow affect the problem, this subclassed spinbox is used as part of subclassed QDialog