Thank you for writing.
You can re-dock the main window after another window is added:
DocumentWindow mainWnd =
sender, EventArgs e)
DocumentWindow newWindow =
We also have a feature request for pinning DocumentWindows. Feel free to cast your vote for it by clicking the Like button: http://feedback.telerik.com/Project/154/Feedback/Details/111931-add-raddock-add-support-for-pinning-a-documentwindow
Let me know if I can assist you further.
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