We came up with a weird problem. We have a Widget with a few buttons, when clicking on one the widget should expand down, showing a progress bar.

The thing is that if we do:
Qt Code: 
  1. void frmCreateKeys::slotGenerateKey()
  2. {
  3.     if (!validatePage())
  4.         return;
  5.  
  6.     /// Animate the frame, to grow and show the progress bar
  7.     QPropertyAnimation animationFrame(this, "geometry");
  8.     animationFrame.setDuration(300);
  9.     animationFrame.setEndValue(QRect(this->pos().x()+7,this->pos().y()+30, this->width(), this->height() + 60));
  10.     animationFrame.start();
  11.  
  12.     ui->msgLabel->setVisible(true);
  13.     ui->pBar->setVisible(true);
  14.     this->repaint();
  15.  
  16.     emit createKey(); // a long task
  17. }
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it doesnt animate, meaning the widget doesnt expand down. Now if we change the animationFrame variable to be a pointer, then everything works fine.
Qt Code: 
  1. /// Animate the frame, to grow and show the progress bar
  2.     QPropertyAnimation *animationFrame = new QPropertyAnimation (this, "geometry");
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Any ideas why this could be happening?