Rich Edit 컨트롤 관련 클래스
The CRichEditView, CRichEditDoc, and CRichEditCntrItem classes provide the functionality of the rich edit control (CRichEditCtrl) within the context of MFC's document/view architecture. CRichEditView maintains the text and formatting characteristic of text. CRichEditDoc maintains the list of OLE client items that are in the view. CRichEditCntrItem provides container-side access to the OLE client item. To modify the contents of a CRichEditView, use CRichEditView::GetRichEditCtrl to access the underlying rich edit control.