# IStorage::Revert

Discards all changes that have been made to the storage object since the last commit.

HRESULT Revert(void);

Return Values

S_OK
  The revert operation was successful.
E_PENDING
  Asynchronous Storage only: Part or all of the storage’s data is currently unavailable. For more information see IFillLockBytes and Asynchronous Storage.
STG_E_INSUFFICIENTMEMORY
  The revert operation could not be completed due to a lack of memory.
STG_E_TOOMANYOPENFILES
  The revert operation could not be completed because there are too many open files.
STG_E_REVERTED
  The storage object has been invalidated by a revert operation above it in the transaction tree.

Remarks

For storage objects opened in transacted mode, the IStorage::Revert method discards any uncommitted changes to this storage object or changes that have been committed to this storage object from nested elements.

After this method returns, any existing elements (substorages or streams) that were opened from the reverted storage object are invalid and can no longer be used. Specifying these reverted elements in any call except IStorage::Release returns the error STG_E_REVERTED

This method has no effect on storage objects opened in direct mode.

See Also

IStorage - Compound File Implementation, IStorage::Commit