Qt Code: 
  1. QHBoxLayout *layout = new QHBoxLayout( this );
  2.   QWidget *newTab = new QWidget( this );
  3.   newTab->setLayout( layout );
  4.  
  5.   QRadioButton *aCOption_   = new QRadioButton( "Button 1", this );
  6.   QRadioButton *aWOption_ = new QRadioButton( "Button 2", this );
  7.   QRadioButton *aBOption_ = new QRadioButton( "Button 3", this );
  8.  
  9.   layout->addWidget( aCOption_ );
  10.   layout->addWidget( aWOption_ );
  11.   layout->addWidget( aBOption_ );
  12.   layout->addStretch();
  13.  
  14.   tabWidget->addTab( newTab, ( "New tab" ) );
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Error is that it puts the buttons on one line, but would require that the buttons would be on a separate line