diff --git a/os/macosx/macos.h b/os/macosx/macos.h
new file mode 100644
--- /dev/null
+++ b/os/macosx/macos.h
@@ -0,0 +1,6 @@
+#ifndef MACOS_H
+#define MACOS_H
+
+void ShowMacDialog ( const char *title, const char *message, const char *buttonLabel );
+
+#endif /* MACOS_H */
\ No newline at end of file