Show Pointing Hand Cursor on error messages

def mouseMoveEvent(self, event):
        """Show Pointing Hand Cursor on error messages"""
        text = self.get_line_at(event.pos())
        if get_error_match(text):
            if not self.__cursor_changed:
                QApplication.setOverrideCursor(QCursor(Qt.PointingHandCursor))
                self.__cursor_changed = True
            event.accept()
            return
        if self.__cursor_changed:
            QApplication.restoreOverrideCursor()
            self.__cursor_changed = False
        self.QT_CLASS.mouseMoveEvent(self, event)