Get Checkstate of Checkboxes

Hello, I am new to the Robot-Framework and the RPA-Framework. I am using RPA.Windows to write test keywords to test an application on Windows. For some keywords, I need to get the checked-status of the checkboxes. These are not html-Checkboxes, but QML Elements (e.g. AbstractButton). I haven’t found a way to see if these checkboxes are checked with RPA.Windows and also, I can’t get the descriptions of any kind of element with RPA.Windows.
Does someone have an idea how to solve this issue?