Creates a new entry item for this widget.
        
        :param      key     | <str>
                    value   | <variant>

def addEntry(self, key='', value=''):
        """
        Creates a new entry item for this widget.
        
        :param      key     | <str>
                    value   | <variant>
        """
        img = resources.find('img/close.png')
        new_item = XTreeWidgetItem()
        new_item.setText(1, nativestring(key))
        new_item.setText(2, nativestring(value))
        new_item.setIcon(0, QtGui.QIcon(img))
        new_item.setFixedHeight(22)
        self.insertTopLevelItem(self.topLevelItemCount() - 1, new_item)
        
        return new_item