CRichEditCtrl::CanUndo
Determines if the last editing operation can be undone.
BOOL CanUndo( ) const;
Return Value
Nonzero if the last edit operation can be undone by a call to the Undo member function; 0 if it cannot be undone.
Remarks
For more information, see EM_CANUNDO in the Windows SDK.
Example
// Undo the last operation, if possible.
if (m_myRichEditCtrl.CanUndo())
m_myRichEditCtrl.Undo();
Requirements
Header: afxcmn.h