I want to dynamically add and remove widgets to a display, but it doesn't seem to work...

the addBackground slot is called on properly but no extra widgets appear, even when I resize it. What can I do to make it work?

I have members:
Qt Code: 
  1. QPtrList<BackgroundWidget> *backgrounds;
  2. QVBoxLayout *backgroundsLayout;
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This is supposed to add stuff:
Qt Code: 
  1. void KreatorMain::addBackground() {
  2.  int value=backgroundValue->value();
  3.  QString name=backgroundName->currentText();
  4.   BackgroundWidget *bg=
  5.     new BackgroundWidget( name, value,
  6.                           generalBackgroundsTab, "", 0);
  7.   backgrounds->append(bg);
  8.   connect(bg,SIGNAL(removeBackground()),this,SLOT(removeBackground()));
  9.   backgroundsLayout->addWidget(bg);
  10.  
  11. }
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