winstd::com_obj "QueryInterface" constructors added

include/WinStd/COM.h

@@ -64,6 +64,32 @@ namespace winstd
         }
 
 
+        ///
+        /// Queries the object for another interface and creates new class with it
+        ///
+        /// \sa [IUnknown::QueryInterface method](https://msdn.microsoft.com/en-us/library/windows/desktop/ms682521.aspx)
+        ///
+        template <class _Other>
+        inline com_obj(_Out_ _Other **other)
+        {
+            assert(other);
+            other->QueryInterface(__uuidof(T), (void**)&m_h);
+        }
+
+
+        ///
+        /// Queries the object for another interface and creates new class with it
+        ///
+        /// \sa [IUnknown::QueryInterface method](https://msdn.microsoft.com/en-us/library/windows/desktop/ms682521.aspx)
+        ///
+        template <class _Other>
+        inline com_obj(_Out_ com_obj<_Other> &other)
+        {
+            assert(other);
+            other->QueryInterface(__uuidof(T), (void**)&m_h);
+        }
+
+
         ///
         /// Releases object
         ///