1 files changed, 84 insertions, 0 deletions
diff --git a/catchcopy-windows-explorer-plugin/ClassFactory.cpp b/catchcopy-windows-explorer-plugin/ClassFactory.cpp
new file mode 100755
index 0000000..9ad7a5c
--- /dev/null
+++ b/catchcopy-windows-explorer-plugin/ClassFactory.cpp
@@ -0,0 +1,84 @@
+
+#include "ClassFactory.h"
+#include "DDShellExt.h"
+#include <new>
+#include <Shlwapi.h>
+
+extern long g_cDllRef;
+
+ClassFactory::ClassFactory() : m_cRef(1)
+{
+    InterlockedIncrement(&g_cDllRef);
+}
+
+ClassFactory::~ClassFactory()
+{
+    InterlockedDecrement(&g_cDllRef);
+}
+
+// IUnknown
+HRESULT __stdcall ClassFactory::QueryInterface(const IID& iid, void **ppv)
+{
+   if(iid == IID_IUnknown || iid == IID_IClassFactory)
+    {
+        *ppv = static_cast<IClassFactory*>(this);
+    }
+    else
+    {
+        *ppv = NULL;
+        return E_NOINTERFACE;
+    }
+    reinterpret_cast<IUnknown*>(*ppv)->AddRef();
+    return S_OK;
+}
+ULONG __stdcall ClassFactory::AddRef()
+{
+    return InterlockedIncrement(&m_cRef);
+}
+
+ULONG __stdcall ClassFactory::Release()
+{
+    ULONG cRef = InterlockedDecrement(&m_cRef);
+    if (0 == cRef)
+    {
+        delete this;
+    }
+    return cRef;
+}
+
+//CreateInstance
+HRESULT __stdcall ClassFactory::CreateInstance(IUnknown *pIUnknownOuter, const IID& iid, void **ppv)
+{
+    HRESULT hr = CLASS_E_NOAGGREGATION;
+
+    // pIUnknownOuter is used for aggregation. We do not support it in the sample.
+    if (pIUnknownOuter == NULL)
+    {
+        hr = E_OUTOFMEMORY;
+
+        //// Create the COM component.
+        CDDShellExt *pExt = new (std::nothrow) CDDShellExt();
+        if (pExt)
+        {
+            // Query the specified interface.
+            hr = pExt->QueryInterface(iid, ppv);
+            pExt->Release();
+        }
+    }
+
+    return hr;
+}
+
+HRESULT __stdcall ClassFactory::LockServer(BOOL bLock)
+{
+    if(bLock == TRUE)
+    {
+        InterlockedIncrement(&g_cDllRef);
+    }
+    else
+    {
+        InterlockedDecrement(&g_cDllRef);
+    }
+    return S_OK;
+}
+