IUIX_RangesNavigator::LockChangesHistory Method
From PDF XChange PDF SDK
The method of interface of PDF-XChange Editor SDK.
Шncremental lock/unlock of history changes LockChangesHistory()/PXV:IUIX_RangesNavigator_UnlockChangesHistory/UnlockChangesHistory().
Syntax
HRESULT LockChangesHistory();
Return Value
Returns S_OK if operation was successful or error code in other cases.