[PATCH 4/5] include: Add IID_PPV_ARGS macro.

[Rémi Bernon]

From: Rémi Bernon

---
 include/combaseapi.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/combaseapi.h b/include/combaseapi.h
index 41461f22e98..7343a72fbbb 100644
--- a/include/combaseapi.h
+++ b/include/combaseapi.h
@@ -53,6 +53,15 @@ enum AgileReferenceOptions
 HRESULT WINAPI CoDecodeProxy(DWORD client_pid, UINT64 proxy_addr, ServerInformation *server_info);
 HRESULT WINAPI RoGetAgileReference(enum AgileReferenceOptions options, REFIID riid, IUnknown *obj, IAgileReference **agile_reference);

+#ifdef __cplusplus
+extern "C++" template<typename T> void **IID_PPV_ARGS_Helper(T **obj)
+{
+    (void)static_cast<IUnknown *>(*obj);
+    return reinterpret_cast<void **>(obj);
+}
+#define IID_PPV_ARGS(obj) __uuidof(**(obj)), IID_PPV_ARGS_Helper(obj)
+#endif /* __cplusplus */
+
 #ifdef __cplusplus
 }
 #endif