CRichEditCtrl::EmptyUndoBuffer

Resets (clear) the undo flag of this rich edit control.

void EmptyUndoBuffer( );

Remarks

The control will now be unable to undo the last editing operation. The undo flag is set whenever an operation within the rich edit control can be undone.

The undo flag is automatically cleared whenever you call the CWnd member function SetWindowText.

For more information, see EM_EMPTYUNDOBUFFER in the Windows SDK.

Example

// Clear the undo buffer.
if (m_myRichEditCtrl.CanUndo())
{
   m_myRichEditCtrl.EmptyUndoBuffer();
   ASSERT(!m_myRichEditCtrl.CanUndo());
}

Requirements

Header: afxcmn.h

See Also

Concepts

CRichEditCtrl Class

CRichEditCtrl Members

Hierarchy Chart

CRichEditCtrl::CanUndo

CRichEditCtrl::Undo

CWnd::SetWindowText