Get rid of some platform-specific functions examining window

system and its capabilities.  This is a partial rework of the
2013-04-05 change.
* lisp.h (have_menus_p): Remove prototype.  This function is
replaced with platform-independent window_system_available.
(check_window_system): Move to...
* frame.h (decode_window_system_frame, window_system_available):
...here, add new prototypes.
* frame.c (window_system_available, decode_window_system_frame):
New functions.
(check_window_system): Platform-independent now.
* xterm.h (x_in_use): Remove declaration.
(check_x_frame):
* w32term.h (check_x_frame):
* nsterm.h (check_x_frame): Remove prototypes.  This function
is replaced with platform-independent decode_window_system_frame.
* msdos.c (have_menus_p): Remove.
* nsfns.m (check_window_system, have_menus_p, check_ns_frame):
Remove platform-specific functions.  Use check_window_system,
decode_window_system_frame and check_ns_display_info where
appropriate.  Minor style and comment tweaks.
* w32fns.c (w32_in_use, check_window_system, have_menus_p)
(check_x_frame): Likewise.
* xfns.c (x_in_use, check_window_system, have_menus_p, check_x_frame):
Likewise.
* fileio.c, fns.c, font.c, fontset.c, image.c, menu.c, nsmenu.m:
* nsselect.m, nsterm.m, w32font.c, w32menu.c, xfaces.c, xgselect.c:
* xmenu.c, xselect.c: All related users changed.

1 files changed, 7 insertions, 8 deletions

diff --git a/src/nsselect.m b/src/nsselect.m
index 2f539a16406..bb9eacd23cd 100644
--- a/src/nsselect.m
+++ b/src/nsselect.m
@@ -354,8 +354,7 @@ On Nextstep, FRAME is unused.  */)
   Lisp_Object successful_p = Qnil, rest;
   Lisp_Object target_symbol, data;
 
-
-  check_window_system ();
+  check_window_system (NULL);
   CHECK_SYMBOL (selection);
   if (NILP (value))
       error ("selection value may not be nil.");
@@ -409,7 +408,7 @@ On MS-DOS, all this does is return non-nil if we own the selection.  */)
   (Lisp_Object selection, Lisp_Object time_object, Lisp_Object terminal)
 {
   id pb;
-  check_window_system ();
+  check_window_system (NULL);
   CHECK_SYMBOL (selection);
   if (NILP (assq_no_quit (selection, Vselection_alist))) return Qnil;
 
@@ -436,7 +435,7 @@ On Nextstep, TERMINAL is unused.  */)
   id pb;
   NSArray *types;
 
-  check_window_system ();
+  check_window_system (NULL);
   CHECK_SYMBOL (selection);
   if (EQ (selection, Qnil)) selection = QPRIMARY;
   if (EQ (selection, Qt)) selection = QSECONDARY;
@@ -464,7 +463,7 @@ frame's display, or the first available X display.
 On Nextstep, TERMINAL is unused.  */)
      (Lisp_Object selection, Lisp_Object terminal)
 {
-  check_window_system ();
+  check_window_system (NULL);
   CHECK_SYMBOL (selection);
   if (EQ (selection, Qnil)) selection = QPRIMARY;
   if (EQ (selection, Qt)) selection = QSECONDARY;
@@ -492,7 +491,7 @@ On Nextstep, TIME-STAMP and TERMINAL are unused.  */)
 {
   Lisp_Object val;
 
-  check_window_system ();
+  check_window_system (NULL);
   CHECK_SYMBOL (selection_name);
   CHECK_SYMBOL (target_type);
   val = ns_get_local_selection (selection_name, target_type);
@@ -516,7 +515,7 @@ SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'. */)
      (Lisp_Object selection)
 {
   id pb;
-  check_window_system ();
+  check_window_system (NULL);
   pb = ns_symbol_to_pb (selection);
   return pb != nil ? ns_string_from_pasteboard (pb) : Qnil;
 }
@@ -529,7 +528,7 @@ SELECTION is a symbol, typically `PRIMARY', `SECONDARY', or `CLIPBOARD'. */)
      (Lisp_Object selection, Lisp_Object string)
 {
   id pb;
-  check_window_system ();
+  check_window_system (NULL);
   pb = ns_symbol_to_pb (selection);
   if (pb != nil) ns_string_to_pasteboard (pb, string);
   return Qnil;