+// we can't rely on Windows _W64 being defined as windows.h may not be included
+// so define our own equivalent: this should be used with types like WXLPARAM
+// or WXWPARAM which are 64 bit under Win64 to avoid warnings each time we cast
+// it to a pointer or a handle (which results in hundreds of warnings as Win32
+// API often passes pointers in them)
+#if wxCHECK_VISUALC_VERSION(7)
+ #define wxW64 __w64
+#else
+ #define wxW64
+#endif
+