HRESULT BookmarkAdd(VDCTBOOKMARK *pBookMark);
This adds an application-specific bookmark into the text. The meaning of the bookmark is left solely up to the application. Bookmarks move with the text so applications can place them to insure that insertions and deletions do not put font formatting out of sync.
· Returns NOERROR if successful, or one of these error values:
E_INVALIDARG
E_OUTOFMEMORY
pBookMark
[in] Characteristics of the bookmark.