mainwindow does not refresh

[edb]

I have a mainwindow that is derived from QMainwindow and that uses a number of dockwindows and has qworkspace as its central widget (for MDI purposes). Some of the processes I run are very lengthy. If I minimize my application to do something meanwhile, the mainwindow does not refresh on showing. I tryed to force this using the following timer (code in constructor of mainwindow):

QTimer *refreshTimer = new QTimer( this );
  connect( refreshTimer,  SIGNAL( timeout() ), this, SLOT( SlotRefresh() ));
  refreshTimer->start( 100, FALSE );

QTimer *refreshTimer = new QTimer( this );
  connect( refreshTimer,  SIGNAL( timeout() ), this, SLOT( SlotRefresh() ));
  refreshTimer->start( 100, FALSE );

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SlotRefresh(): tryed it with update and repaint:

void mainwindow::SlotRefresh()
{
   /*update();
   qApp->processEvents();*/
  repaint();
   qApp->processEvents();
}

void mainwindow::SlotRefresh()
{
   /*update();
   qApp->processEvents();*/
  repaint();
   qApp->processEvents();
}

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I even tryed to call update on one of the dockwindows used, but that doesn't work either

Any ideas?

Thanx