+/* Things pterm.c needs from gtkdlg.c */
+int do_config_box(const char *title, Conf *conf,
+ int midsession, int protcfginfo);
+void fatal_message_box(void *window, const char *msg);
+void nonfatal_message_box(void *window, const char *msg);
+void about_box(void *window);
+void *eventlogstuff_new(void);
+void showeventlog(void *estuff, void *parentwin);
+void logevent_dlg(void *estuff, const char *string);
+int reallyclose(void *frontend);
+#ifdef MAY_REFER_TO_GTK_IN_HEADERS
+int messagebox(GtkWidget *parentwin, const char *title,
+ const char *msg, int minwid, int selectable, ...);
+#endif
+
+/* Things pterm.c needs from {ptermm,uxputty}.c */
+char *make_default_wintitle(char *hostname);
+int process_nonoption_arg(const char *arg, Conf *conf, int *allow_launch);
+
+/* pterm.c needs this special function in xkeysym.c */
+int keysym_to_unicode(int keysym);
+
+/* Things uxstore.c needs from pterm.c */
+char *x_get_default(const char *key);
+
+/* Things uxstore.c provides to pterm.c */
+void provide_xrm_string(char *string);
+
+/* Things provided by uxcons.c */
+struct termios;
+void stderr_tty_init(void);
+void premsg(struct termios *);
+void postmsg(struct termios *);
+
+/* The interface used by uxsel.c */
+typedef struct uxsel_id uxsel_id;
+void uxsel_init(void);
+typedef int (*uxsel_callback_fn)(int fd, int event);
+void uxsel_set(int fd, int rwx, uxsel_callback_fn callback);
+void uxsel_del(int fd);
+int select_result(int fd, int event);
+int first_fd(int *state, int *rwx);
+int next_fd(int *state, int *rwx);
+/* The following are expected to be provided _to_ uxsel.c by the frontend */
+uxsel_id *uxsel_input_add(int fd, int rwx); /* returns an id */
+void uxsel_input_remove(uxsel_id *id);
+
+/* uxcfg.c */
+struct controlbox;
+void unix_setup_config_box(struct controlbox *b, int midsession, int protocol);
+
+/* gtkcfg.c */
+void gtk_setup_config_box(struct controlbox *b, int midsession, void *window);
+
+/*
+ * In the Unix Unicode layer, DEFAULT_CODEPAGE is a special value
+ * which causes mb_to_wc and wc_to_mb to call _libc_ rather than
+ * libcharset. That way, we can interface the various charsets
+ * supported by libcharset with the one supported by mbstowcs and
+ * wcstombs (which will be the character set in which stuff read
+ * from the command line or config files is assumed to be encoded).
+ */
+#define DEFAULT_CODEPAGE 0xFFFF
+#define CP_UTF8 CS_UTF8 /* from libcharset */
+
+#define strnicmp strncasecmp
+#define stricmp strcasecmp
+
+/* BSD-semantics version of signal(), and another helpful function */
+void (*putty_signal(int sig, void (*func)(int)))(int);
+void block_signal(int sig, int block_it);
+
+/* uxmisc.c */
+void cloexec(int);
+void noncloexec(int);
+int nonblock(int);
+int no_nonblock(int);
+char *make_dir_and_check_ours(const char *dirname);
+
+/*
+ * Exports from unicode.c.
+ */
+struct unicode_data;
+int init_ucs(struct unicode_data *ucsdata, char *line_codepage,
+ int utf8_override, int font_charset, int vtmode);
+
+/*
+ * Spare function exported directly from uxnet.c.
+ */
+void *sk_getxdmdata(void *sock, int *lenp);
+
+/*
+ * General helpful Unix stuff: more helpful version of the FD_SET
+ * macro, which also handles maxfd.
+ */
+#define FD_SET_MAX(fd, max, set) do { \
+ FD_SET(fd, &set); \
+ if (max < fd + 1) max = fd + 1; \
+} while (0)
+
+/*
+ * Exports from winser.c.
+ */
+extern Backend serial_backend;
+
+/*
+ * uxpeer.c, wrapping getsockopt(SO_PEERCRED).
+ */
+int so_peercred(int fd, int *pid, int *uid, int *gid);
+
+/*
+ * Default font setting, which can vary depending on NOT_X_WINDOWS.
+ */
+#ifdef NOT_X_WINDOWS
+#define DEFAULT_GTK_FONT "client:Monospace 12"
+#else
+#define DEFAULT_GTK_FONT "server:fixed"
+#endif