hello, I want to draw a checkbox centered in the cell so I tried to subclass QStyledItemDelegate to draw the checkbox but it showed but won't centered and I tried to calculate QStyleOptionButton 's rect manually and it seem not the right way do to, so what is the right way to align item ? and one more problem I can't find a way to custom draw the header of qtableview , please help.

Qt Code: 
  1. void TestDelegate::paint(QPainter *painter,
  2. 						  const QStyleOptionViewItem &option,
  3. 						  const QModelIndex &index) const
  4. {
  5. 	if (index.column() == 1) 
  6. 	{
  7. 		bool data = index.model()->data(index, Qt::DisplayRole).toBool();
  8. 		QStyleOptionButton checkboxstyle;
  9. 		checkboxstyle.rect = option.rect;
  10. 		int width = checkboxstyle.rect.width();
  11. 		checkboxstyle.rect.setLeft(checkboxstyle.rect.x()+width/2);
  12. 		if(data)
  13. 			checkboxstyle.state = QStyle::State_On|QStyle::State_Enabled;
  14. 		else
  15. 			checkboxstyle.state = QStyle::State_Off|QStyle::State_Enabled;
  16. 		QApplication::style()->drawControl(QStyle::CE_CheckBox,	&checkboxstyle, painter);
  17. 	} 
  18. 	else
  19. 	{
  20. 		QStyledItemDelegate::paint(painter, option, index);
  21. 	}
  22. }
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