import win32com.client


if __name__ == "__main__":
    QParentWidget = win32com.client.Dispatch("hierarchyax.QParentWidget") #{D574A747-8016-46DB-A07C-B2B4854EE75C}
    
    # Create new widget object
    QParentWidget.createSubWidget("ABC")

    # Retrieve widget
    widget = QParentWidget.subWidget("ABC")

    # Read label property
    lbl = widget.label
    print("Old widget label: "+lbl)

    # Write label property (throws COM Error: Parameter not optional. (0x-7ffdfff1))
    widget.label = "New name"