seat_angle_main.py 文件源码

def check_range(self, widget, lblwidget, min_value, max_value):
        """(QlineEdit, QLabel, Number, Number)---> NoneType
        Validating F_u(ultimate Strength) and F_y (Yield Strength) textfields
        """
        textStr = widget.text()
        val = int(textStr)
        if val < min_value or val > max_value:
            QMessageBox.about(self, 'Error', 'Please Enter a value between %s-%s' % (min_value, max_value))
            widget.clear()
            widget.setFocus()
            palette = QPalette()
            palette.setColor(QPalette.Foreground, Qt.red)
            lblwidget.setPalette(palette)
        else:
            palette = QPalette()
            lblwidget.setPalette(palette)