code: def _updateTargetFromNode(self):
          
          font = self.data
          if self.familyCti.configValue:
              font.setFamily(self.familyCti.configValue)
          else:
              font.setFamily(QtGui.QFont().family()) # default family
          font.setPointSize(self.pointSizeCti.configValue)
          font.setWeight(self.weightCti.configValue)
          font.setItalic(self.italicCti.configValue)
          self._targetWidget.setFont(font)
docs: Applies the font config settings to the target widget's font.
  
              That is the targetWidget.setFont() is called with a font create from the config values.