Using QObjectPointerList in Qt3

[importantman]

I am getting a wierd compiler error in this code:

const QObjectList *l = boxLayout->children();
 
  for ( unsigned int i = topLine; i != l->count(); i++ )
        {
                QObject *obj = l->at(i);
                if( !((PositionElementLine*)obj)->isChecked() )
                        firstUnchecked = i;
        }

const QObjectList *l = boxLayout->children();

  for ( unsigned int i = topLine; i != l->count(); i++ )
        {
                QObject *obj = l->at(i);
                if( !((PositionElementLine*)obj)->isChecked() )
                        firstUnchecked = i;
        }

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gcc objects to line 5 with this message:

error: passing 'const QObjectList' as 'this' argument of 'type* QPtrList<type>::at(uint) [with type = QObject]' discards qualifiers