diff --git a/src/proto/window.pro b/src/proto/window.pro
new file mode 100644
index 0000000..243bd7b
--- /dev/null
+++ b/src/proto/window.pro
@@ -0,0 +1,44 @@
+/* window.c */
+void do_window __ARGS((int nchar, long Prenum, int xchar));
+int win_split __ARGS((int size, int flags));
+int win_valid __ARGS((win_T *win));
+int win_count __ARGS((void));
+int make_windows __ARGS((int count, int vertical));
+void win_move_after __ARGS((win_T *win1, win_T *win2));
+void win_equal __ARGS((win_T *next_curwin, int current, int dir));
+void close_windows __ARGS((buf_T *buf));
+void win_close __ARGS((win_T *win, int free_buf));
+void close_others __ARGS((int message, int forceit));
+void win_init __ARGS((win_T *wp));
+void win_alloc_first __ARGS((void));
+void win_goto __ARGS((win_T *wp));
+win_T *win_find_nr __ARGS((int winnr));
+void win_enter __ARGS((win_T *wp, int undo_sync));
+win_T *buf_jump_open_win __ARGS((buf_T *buf));
+int win_alloc_lines __ARGS((win_T *wp));
+void win_free_lsize __ARGS((win_T *wp));
+void shell_new_rows __ARGS((void));
+void shell_new_columns __ARGS((void));
+void win_size_save __ARGS((garray_T *gap));
+void win_size_restore __ARGS((garray_T *gap));
+void win_setheight __ARGS((int height));
+void win_setheight_win __ARGS((int height, win_T *win));
+void win_setwidth __ARGS((int width));
+void win_setwidth_win __ARGS((int width, win_T *wp));
+void win_setminheight __ARGS((void));
+void win_drag_status_line __ARGS((win_T *dragwin, int offset));
+void win_drag_vsep_line __ARGS((win_T *dragwin, int offset));
+void win_comp_scroll __ARGS((win_T *wp));
+void command_height __ARGS((long old_p_ch));
+void last_status __ARGS((int morewin));
+char_u *file_name_at_cursor __ARGS((int options, long count));
+char_u *file_name_in_line __ARGS((char_u *line, int col, int options, long count, char_u *rel_fname));
+char_u *find_file_name_in_path __ARGS((char_u *ptr, int len, int options, long count, char_u *rel_fname));
+int path_with_url __ARGS((char_u *fname));
+int vim_isAbsName __ARGS((char_u *name));
+int vim_FullName __ARGS((char_u *fname, char_u *buf, int len, int force));
+int min_rows __ARGS((void));
+int only_one_window __ARGS((void));
+void check_lnums __ARGS((int do_curwin));
+int win_hasvertsplit __ARGS((void));
+/* vim: set ft=c : */