On 5/15/2014 20:02, Vincent Povirk wrote:
http://msdn.microsoft.com/en-us/library/aa367294.aspx
"The [unique] attribute cannot be applied to [out]-only top-level pointer parameters (parameters that have only the [out] directional attribute)."
Interesting, I can't reproduce that with midl 7.00.05. It's possible that newer versions are different which I doubt, most likely my test is incomplete - it only generates a header (I still expected a full syntax check).