int itemHeight = item.computeSize(SWT.DEFAULT, SWT.DEFAULT).y;
int itemHeight = item.getSize().y;
int getRowHeight (int rowIndex) {	Vector row = (Vector) rows.elementAt(rowIndex);	int height = 0;	for (int i = 0; i < row.size(); i++) {		CoolItem item = (CoolItem) row.elementAt(i);		int itemHeight = item.computeSize(SWT.DEFAULT, SWT.DEFAULT).y;		height = Math.max(height, itemHeight);	}	return height;}