appeared in X11R4; for earlier versions, just access the members
of the Display directly.
x_super_mod_mask = 0;
x_hyper_mod_mask = 0;
+#ifdef HAVE_X11R4
XDisplayKeycodes (x_current_display, &min_code, &max_code);
+#else
+ min_code = x_current_display->min_keycode;
+ max_code = x_current_display->max_keycode;
+#endif
+
syms = XGetKeyboardMapping (x_current_display,
min_code, max_code - min_code + 1,
&syms_per_code);