Unlike Infragistics the Telerik Form Styling is based on inheriting from their Form base classes: One with and one without the Ribbon.
Does Progress/Telerik plan to provide versions of the RadForm and RadRibbonForm that also provide the extensions that the Progress.Windows.Form provides to the System.Windows.Forms.Form?
Otherwise we are going to lose a bunch of interoperability features between ABL Window widgets and Telerik .NET Forms.
We're planning to do this in 11.6. There will be Progress.Windows.RadForm, Progress.Windows.RadRibbonForm, and Progress.Windows.ShapedForm classes which have the same features as Progress.Windows.Form. There will also be corresponding versions of Progress.Windows.MDIChildForm. The usual disclaimers apply (our plans can change, it may be different than what I wrote here, etc.).