diff --git a/src/proto/winclip.pro b/src/proto/winclip.pro
new file mode 100644
index 0000000..996847e
--- /dev/null
+++ b/src/proto/winclip.pro
@@ -0,0 +1,14 @@
+/* winclip.c */
+int utf8_to_utf16 __ARGS((char_u *instr, int inlen, short_u *outstr, int *unconvlenp));
+int utf16_to_utf8 __ARGS((short_u *instr, int inlen, char_u *outstr));
+void MultiByteToWideChar_alloc __ARGS((UINT cp, DWORD flags, LPCSTR in, int inlen, LPWSTR *out, int *outlen));
+void WideCharToMultiByte_alloc __ARGS((UINT cp, DWORD flags, LPCWSTR in, int inlen, LPSTR *out, int *outlen, LPCSTR def, LPBOOL useddef));
+void win_clip_init __ARGS((void));
+int clip_mch_own_selection __ARGS((VimClipboard *cbd));
+void clip_mch_lose_selection __ARGS((VimClipboard *cbd));
+void clip_mch_request_selection __ARGS((VimClipboard *cbd));
+void clip_mch_set_selection __ARGS((VimClipboard *cbd));
+short_u *enc_to_utf16 __ARGS((char_u *str, int *lenp));
+char_u *utf16_to_enc __ARGS((short_u *str, int *lenp));
+void acp_to_enc __ARGS((char_u *str, int str_size, char_u **out, int *outlen));
+/* vim: set ft=c : */