template<typename T=void> struct WinResult { WinResult<T>() { success=false; error=::GetLastError(); } WinResult<T>(BOOL res,T val) { if(res) {success=true;value=val;} else {success=false;error=::GetLastError();} } WinResult(const WinResult& rhs):success(rhs.suc</t></t></typename>…