Define the WOW64 key when needed.
diff --git a/src/if_ole.cpp b/src/if_ole.cpp
index 44a3568..ca82182 100644
--- a/src/if_ole.cpp
+++ b/src/if_ole.cpp
@@ -85,6 +85,14 @@
#define MAX_CLSID_LEN 100
+/*
+ * Modern way of creating registry entries, also works on 64 bit windows when
+ * compiled as a 32 bit program.
+ */
+# ifndef KEY_WOW64_64KEY
+# define KEY_WOW64_64KEY 0x0100
+# endif
+
/*****************************************************************************
2. The application object
*****************************************************************************/