IFileDialog2::ClearClientData Method
Instructs the dialog to clear all persisted state information.
Syntax
HRESULTÂ ClearClientData(VOID);
Return Value
Returns S_OK if successful, or an error value otherwise.
Remarks
Persisted information can be associated with an application or a GUID. If a GUID was set by using IFileDialog::SetClientGuid, that GUID is used to clear persisted information.