1 files changed, 54 insertions, 0 deletions
diff --git a/network/wlan/ihvsampleui/iunk.h b/network/wlan/ihvsampleui/iunk.h
new file mode 100644
index 00000000..9b8242c5
--- /dev/null
+++ b/network/wlan/ihvsampleui/iunk.h
@@ -0,0 +1,54 @@
+//
+// Copyright (C) Microsoft Corporation 2005
+// IHV UI Extension sample
+//
+
+// Common macro based implementation of IUnknown
+// using a interface table approach
+
+#define IMPLEMENT_REFCOUNT()\
+    ULONG m_crefCount;\
+    \
+    STDMETHODIMP_(ULONG) AddRef(void)\
+    {\
+        return InterlockedIncrement((PLONG)&m_crefCount);\
+    }\
+    \
+    _At_(this, __drv_aliasesMem)\
+    STDMETHODIMP_(ULONG) Release(void)\
+    {\
+        ULONG res = InterlockedDecrement((PLONG)&m_crefCount);\
+        if (res == 0)\
+        {\
+           delete this;\
+        }\
+        return res;\
+    }
+
+#define BEGIN_INTERFACE_TABLE()\
+    IMPLEMENT_REFCOUNT()\
+    STDMETHODIMP QueryInterface(REFIID riid, void** ppvObject)\
+    {\
+        if (riid == IID_IUnknown)\
+        {\
+            *ppvObject = reinterpret_cast<IUnknown*>(this);\
+        }
+
+#define IMPLEMENTS_INTERFACE(Itf)\
+        else if (riid == IID_ ## Itf)\
+        {\
+            *ppvObject = static_cast<Itf*>(this);\
+        }
+
+#define END_INTERFACE_TABLE()\
+        else \
+        {\
+           *ppvObject = NULL;\
+            return E_NOINTERFACE;\
+        }\
+        \
+        reinterpret_cast<IUnknown *>(*ppvObject)->AddRef();\
+        \
+        return S_OK;\
+    }
+