-extern void xsettings_initialize (struct x_display_info *dpyinfo);
-extern void xft_settings_event (struct x_display_info *dpyinfo,
- XEvent *);
+struct x_display_info;
+
+extern void xsettings_initialize (struct x_display_info *);
+extern void xft_settings_event (struct x_display_info *, const XEvent *);