2013-03-10 Daniel Colascione <dancol@dancol.org>

	* w32term.h (GUISTR, GUI_ENCODE_FILE, GUI_ENCODE_SYSTEM, GUI_FN)
	(GUI_SDATA, guichar_t): Macros to abstract out differences between
	NTGUI_UNICODE and !NTGUI_UNICODE builds, some moved out of
	w32fns.c.

	* w32term.c (construct_drag_n_drop): Use the above macros to make
	drag-and-drop work for non-ASCII filenames in cygw32 builds.

	* w32fns.c (x_set_name, x_set_title): Use the above macros to
	properly display non-ASCII frame titles in cygw32 builds.

	* w32fns.c (Fw32_shell_execute): Use the above macros to properly
	call ShellExecute in cygw32 builds.

	* w32fn.c (Fx_file_dialog): Use the above macros to simplify the
	common file dialog code.

	* w32fns.c (Ffile_system_info): Remove from cygw32 builds, which
	can just use du like other systems.

	* coding.c (from_unicode_buffer): Declare.
	* coding.c (from_unicode_buffer): Implement.

1 files changed, 9 insertions, 4 deletions

diff --git a/src/w32term.c b/src/w32term.c
index 170f33ecd67..6137d54c837 100644
--- a/src/w32term.c
+++ b/src/w32term.c
@@ -3161,7 +3161,7 @@ construct_drag_n_drop (struct input_event *result, W32Msg *msg, struct frame *f)
   HDROP hdrop;
   POINT p;
   WORD num_files;
-  char *name;
+  guichar_t *name;
   int i, len;
 
   result->kind = DRAG_N_DROP_EVENT;
@@ -3186,12 +3186,17 @@ construct_drag_n_drop (struct input_event *result, W32Msg *msg, struct frame *f)
 
   for (i = 0; i < num_files; i++)
     {
-      len = DragQueryFile (hdrop, i, NULL, 0);
+      len = GUI_FN (DragQueryFile) (hdrop, i, NULL, 0);
       if (len <= 0)
         continue;
-      name = alloca (len + 1);
-      DragQueryFile (hdrop, i, name, len + 1);
+
+      name = alloca ((len + 1) * sizeof (*name));
+      GUI_FN (DragQueryFile) (hdrop, i, name, len + 1);
+#ifdef NTGUI_UNICODE
+      files = Fcons (from_unicode_buffer (name), files);
+#else
       files = Fcons (DECODE_FILE (build_string (name)), files);
+#endif /* NTGUI_UNICODE */
     }
 
   DragFinish (hdrop);