check Box Item Table Widget Item

i need just i check the checkbox it run the fun check_color_green directly without refresh ??help

#chkBoxItem = QTableWidgetItem()

#chkBoxItem.setFlags(Qt.ItemIsUserCheckable | Qt.ItemIsEnabled)

#chkBoxItem.setCheckState(Qt.Checked)

#self.tableWidget_4.setItem(row_number, column_number, chkBoxItem)

#self.check_color_green(row_number)