Thank you for writing.
Currently, we do not have an editor control and the editor in the example that you see is just an image in a picture box.
Should you have any other questions, do not hesitate to contact us.
the Telerik team
Q1’11 SP1 of RadControls for WinForms is available for download
; also available is the Q2'11 Roadmap
for Telerik Windows Forms controls.