Reverted to mtw(). (MultiByteToWideChar() was not safe for the labels on other versions of Windows.)

src/tuxpaint.c

@@ -341,6 +341,28 @@ typedef struct safer_dirent
 #undef max
 #define mkdir(path,access)    _mkdir(path)
 
+static void mtw(wchar_t * wtok, char *tok, size_t size)
+{
+  /* workaround using iconv to get a functionallity somewhat approximate as mbstowcs() */
+  Uint16 *ui16;
+
+  ui16 = malloc(size);
+  char *wrptr = (char *)ui16;
+  size_t in, out, n;
+  iconv_t trans;
+
+  in = size;
+  out = size;
+  n = size / sizeof(wchar_t);
+
+  trans = iconv_open("WCHAR_T", "UTF-8");
+  iconv(trans, (char **)&tok, &in, &wrptr, &out);
+  *((wchar_t *) wrptr) = L'\0';
+  swprintf(wtok, n, L"%ls", ui16);
+  free(ui16);
+  iconv_close(trans);
+}
+
 extern int win32_trash(const char *path);
 
 #undef iswprint
@@ -22560,7 +22582,7 @@ static void load_info_about_label_surface(FILE * lfi)
       tmpstr = malloc(1024);
       wtmpstr = malloc(1024);
       fgets(tmpstr, 1024, lfi);
-      MultiByteToWideChar(CP_UTF8,MB_COMPOSITE,tmpstr,-1,wtmpstr,1024);
+      mtw(wtmpstr, tmpstr, 1024);
       for (l = 0; l < new_node->save_texttool_len; l++)
         {
           new_node->save_texttool_str[l] = wtmpstr[l];