-extern "C" void wxPopupMenuPositionCallback( GtkMenu *menu,
- gint *x, gint *y,
- gboolean * WXUNUSED(whatever),
- gpointer user_data );
+extern "C" WXDLLIMPEXP_CORE
+ void wxPopupMenuPositionCallback( GtkMenu *menu,
+ gint *x, gint *y,
+ gboolean * WXUNUSED(whatever),
+ gpointer user_data );