QScrollView size policy?

[Henrikas[MI]]

Hi all,
I have some parent widget QVBox containing child widget QScrollView. Now the parent needs to shrink sometimes and even become 0 height if there's no more space, but no matter what size policy I set, QScrollView stops shrinkinkg at some 100px. Any ideas what makes QScrollView stop from shrinking?

class Parent : public QVBox
{
  QScrollView* child;
 
public:
   Parent() {
      child = new QScrollView( this);
      child->setResizePolicy( QScrollView::AutoOneFit); // need this one for sub-child to expand
      child->setMinimumHeight( 0); // ignored?
   }
 
   void Shrink() {
     setSizePolicy( QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Maximum, 1, 0));
   }
}

class Parent : public QVBox
{
  QScrollView* child;

public:
   Parent() {
      child = new QScrollView( this);
      child->setResizePolicy( QScrollView::AutoOneFit); // need this one for sub-child to expand
      child->setMinimumHeight( 0); // ignored?
   }

   void Shrink() {
     setSizePolicy( QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Maximum, 1, 0));
   }
}

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