diff --git a/src/proto/gui_beos.pro b/src/proto/gui_beos.pro
new file mode 100644
index 0000000..af52885
--- /dev/null
+++ b/src/proto/gui_beos.pro
@@ -0,0 +1,14 @@
+/* gui_beos.cc - hand crafted */
+int vim_lock_screen __ARGS((void));
+void vim_unlock_screen __ARGS((void));
+void gui_mch_prepare __ARGS((int *argc, char **argv));
+int gui_mch_init __ARGS((void));
+void gui_mch_new_colors __ARGS((void));
+int gui_mch_open __ARGS((void));
+void gui_mch_exit __ARGS((int vim_exitcode));
+GuiFont gui_mch_get_font __ARGS((char_u *name, int giveErrorIfMissing));
+void gui_mch_set_bg_color __ARGS((guicolor_T color));
+void gui_mch_set_font __ARGS((GuiFont font));
+void gui_mch_flush __ARGS((void));
+long_u gui_mch_get_rgb __ARGS((guicolor_T pixel));
+void gui_mch_set_winpos __ARGS((int x, int y));