+/* Things pty.c needs from pterm.c */
+char *get_x_display(void *frontend);
+int font_dimension(void *frontend, int which);/* 0 for width, 1 for height */
+long get_windowid(void *frontend);
+
+/* Things gtkdlg.c needs from pterm.c */
+void *get_window(void *frontend); /* void * to avoid depending on gtk.h */
+
+/* Things pterm.c needs from gtkdlg.c */
+int do_config_box(const char *title, Config *cfg,
+ int midsession, int protcfginfo);
+void fatal_message_box(void *window, 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);
+
+/* Things pterm.c needs from {ptermm,uxputty}.c */
+char *make_default_wintitle(char *hostname);
+int process_nonoption_arg(char *arg, Config *cfg);
+
+/* 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);
+
+/* The interface used by uxsel.c */
+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 */
+int uxsel_input_add(int fd, int rwx); /* returns an id */
+void uxsel_input_remove(int id);
+
+/* uxcfg.c */
+struct controlbox;
+void unix_setup_config_box(struct controlbox *b, int midsession);
+
+/* 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);
+
+/*
+ * 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);