This method determines whether the last edit operation can be undone.
| Header file: | Afxwin.h | 
| Platforms: | H/PC 2.0, Palm-size PC, H/PC Pro | 
| Windows CE versions: | 1.0 and later | 
| Complete documentation: | Visual C++ documentation | 
BOOL CanUndo( ) const;
CEdit::Undo, CEdit::EmptyUndoBuffer