Hello Adrian,
The article that I have given demonstrates just one of the possible scenarios where ContextMenuService can be of help. Please note that this service is responsible for showing the context menu of the FloatingWindow's titlebar as well. When you take the ContextMenuService instance and handle the ContextMenuDisplaying event, you will notice that this event will be fired when needed.
As to the buttons of the FloatingWindow, all you need to do is handle the DockStateChanged event and change the FormBorderStyle of the e.DockWindow.FloatingParent.
Please refer to the attached sample project where the approaches are demonstrated.
Greetings,
Nikolay
the Telerik team
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