CalcDlg QWidget name CalcDlg geometry 0 0 323 380 caption CalcDlg layoutMargin layoutSpacing margin -1 spacing -1 QTabWidget name TabWidget3 layoutMargin layoutSpacing QWidget name tab title Molecular Weight margin -1 spacing -1 QLayoutWidget name Layout6 margin 0 spacing 6 QLabel name TextLabel2 text Chemical Formula QLineEdit name formula QLayoutWidget name Layout3 margin 0 spacing 6 QPushButton name calculate text Calculate QPushButton name clear_fields text Clear QLabel name TextLabel3 text Molecular Weight (u): QLineEdit name result QLabel name TextLabel1 text Elemental Composition (%): QMultiLineEdit name anal_display readOnly true