The support code for dialogs is not ported to D7 at all.

(I'm working on http://drupalcode.org/project/inline.git/tree/refs/heads/7.x-2.x )

Files: 
CommentFileSizeAuthor
#1 wysiwyg.dialog.1.patch13.62 KBsun

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Status:Active» Fixed
StatusFileSize
new13.62 KB

Status:Fixed» Closed (fixed)

Automatically closed -- issue fixed for 2 weeks with no activity.