CRowset::Undo

Article
12/18/2017

The latest version of this topic can be found at CRowset::Undo.

Undoes any changes made to a row since the last fetch or Update.

Syntax

  
      HRESULT Undo(   
   DBCOUNTITEM* pcRows = NULL,   
   HROW* phRow = NULL,   
   DBROWSTATUS* pStatus = NULL    
) throw( );

Parameters

pcRows
[out] A pointer to the location where Undo returns the number of rows it attempted to undo if required.

phRow
[out] A pointer to the location where Undo returns an array of handles to all rows it attempted to undo if required.

pStatus
[out] A pointer to the location where Undo returns the row status value. No status is returned if pStatus is null.

Return Value

A standard HRESULT.

Remarks

This method requires the optional interface IRowsetUpdate, which might not be supported on all providers; if this is the case, the method returns E_NOINTERFACE. You must also set DBPROP_IRowsetUpdate to VARIANT_TRUE before calling Open on the table or command containing the rowset.

Requirements

Header: atldbcli.h