#define INVALID_HANDLE_VALUE (gpointer)-1
-extern gboolean CloseHandle(gpointer handle);
+G_BEGIN_DECLS
+
+extern gboolean CloseHandle (gpointer handle);
+extern gboolean DuplicateHandle (gpointer srcprocess, gpointer src, gpointer targetprocess, gpointer *target, guint32 access, gboolean inherit, guint32 options);
+
+extern void wapi_init (void);
+extern void wapi_cleanup (void);
+
+int wapi_getdtablesize (void);
+
+G_END_DECLS
#endif /* _WAPI_HANDLES_H_ */