+/*\r
+ MSDN says, basically, that the maximum length of a path is 260 characters,\r
+ which is represented by the constant MAX_PATH. Except when it isn't.\r
+\r
+ The maximum length of a directory path is MAX_PATH - 12 because it must be\r
+ possible to create a file in 8.3 format under any valid directory.\r
+\r
+ Unicode versions of filesystem API functions accept paths up to 32767\r
+ characters if the first four (wide) characters are L"\\?\" and each component\r
+ of the path, separated by L"\", does not exceed the value of\r
+ lpMaximumComponentLength returned by GetVolumeInformation(), which is\r
+ probably 255. But might not be.\r
+\r
+ Relative paths are always limited to MAX_PATH because the L"\\?\" prefix\r
+ is not valid for a relative path.\r
+\r
+ Note that we don't care about the last two paragraphs because we're only\r
+ concerned with allocating buffers big enough to store valid paths. If the\r
+ user tries to store invalid paths they will fit in the buffers but the\r
+ application will fail. The reason for the failure will end up in the\r
+ event log and the user will realise the mistake.\r
+\r
+ So that's that cleared up, then.\r
+*/\r
+#ifdef UNICODE\r
+#define PATH_LENGTH 32767\r
+#else\r
+#define PATH_LENGTH MAX_PATH\r
+#endif\r
+#define DIR_LENGTH PATH_LENGTH - 12\r
+\r