+#include <wtypes.h>
+#include <unknwn.h>
+#include <ole2.h>
+#define _huge
+#include <ole2ver.h>
+#include <oleauto.h>
+
+// wrapper around BSTR type (by Vadim Zeitlin)
+
+class WXDLLEXPORT BasicString
+{
+public:
+ // ctors & dtor
+ BasicString(const char *sz);
+ ~BasicString();
+
+ // accessors
+ // just get the string
+ operator BSTR() const { return m_wzBuf; }
+ // retrieve a copy of our string - caller must SysFreeString() it later!
+ BSTR Get() const { return SysAllocString(m_wzBuf); }
+
+private:
+ // @@@ not implemented (but should be)
+ BasicString(const BasicString&);
+ BasicString& operator=(const BasicString&);
+
+ OLECHAR *m_wzBuf; // actual string
+};
+
+// Convert variants
+static bool ConvertVariantToOle(const wxVariant& variant, VARIANTARG& oleVariant) ;
+static bool ConvertOleToVariant(const VARIANTARG& oleVariant, wxVariant& variant) ;
+