Thank you for writing.
The ToolWindow is changing its ParentForm when its state changes to Floating, however, docking a ToolWIndows from one instance of RadDock to another is not possible.
To get the parent form of a ToolWindow you can use the FindForm method of the DockManager
. Here is a sample:
ToolWindow window =
I hope this helps. Feel free to ask if you have any additional questions.
the Telerik team