How to display a new code window with specific text?

[wmjordan]

I am writing an extension which is purposed to allow users to extract some text from an opened document and put those content into a new code window.

I now uses DTE.ItemOperations.NewFile to create an empty new code window then uses the ITextView.TextBuffer.CreateEdit() method to insert text there.

However, that will cause the inserted text could be removed if a user presses Ctrl+Z, also the track margin indicates the inserted text. Is it possible to prevent that from happening?