When using this method with the flag 0x002 (Suppress the prompt that unsaved changes will be discarded) the dialog that is suppressed is still displayed for a moment as a little box (see attached) in the center of the Arbortext Editor window.
We've even had situations where this little box has not disappeared but stayed on screen and waited for the user. All the user could do then was hit ESC which closed the dialog and carried on.