endPlateMain.py 文件源码

def check_range(self, widget, lblwidget, min_val, max_val):

        '''(QlineEdit,QLable,Number,Number)---> NoneType
        Validating F_u(ultimate Strength) and F_y (Yeild Strength) textfields
        '''
        text_str = widget.text()
        val = int(text_str)
        if(val < min_val or val > max_val):
            QMessageBox.about(self, 'Error', 'Please Enter a value between %s-%s' % (min_val, max_val))
            widget.clear()
            widget.setFocus()
            palette = QPalette()
            palette.setColor(QPalette.Foreground, Qt.red)
            lblwidget.setPalette(palette)
        else:
            palette = QPalette()
            lblwidget.setPalette(palette)