Nice :-)
Note: this looks like a regression in the trunk. The same test works fine in 6.44 and 7.0.
Problem with handling read-only files in TEditView and TRichEditView
Problem with handling read-only files in TEditView
Problem with handling read-only files in TEditView
TCoolEdit: Display ReadOnly in the document title
Possible fixes for the first two issues pushed in [r8820].
BUG: Problems with handling of read-only files in TCoolEdit ([bugs:#646]).