Method of IApplication
File operation helpers.
var pbResult = Application.file_operation(operation, strFrom, strTo, nFlags, bFailIfExist);
pbResult = Application.file_operation operation, strFrom, strTo, nFlags, bFailIfExist
VARIANT_BOOL bResult; HRESULT hr = Application.file_operation(operation, strFrom, strTo, nFlags, bFailIfExist, &bResult);