advpack: Add stub for ExtractFilesW.

dlls/advpack/advpack.spec

@@ -17,7 +17,7 @@
 @ stdcall ExecuteCabW(ptr ptr ptr)
 @ stdcall ExecuteCab(ptr ptr ptr) ExecuteCabA
 @ stdcall ExtractFilesA(str str long ptr ptr long)
-# stdcall ExtractFilesW(wstr wstr long ptr ptr long)
+@ stdcall ExtractFilesW(wstr wstr long ptr ptr long)
 @ stdcall ExtractFiles(str str long ptr ptr long) ExtractFilesA
 @ stdcall FileSaveMarkNotExistA(str str str)
 @ stdcall FileSaveMarkNotExistW(wstr wstr wstr)

dlls/advpack/files.c

@@ -748,6 +748,44 @@ done:
     return res;
 }
 
+/***********************************************************************
+ *             ExtractFilesW    (ADVPACK.@)
+ *
+ * Extracts the specified files from a cab archive into
+ * a destination directory.
+ *
+ * PARAMS
+ *   CabName   [I] Filename of the cab archive.
+ *   ExpandDir [I] Destination directory for the extracted files.
+ *   Flags     [I] Reserved.
+ *   FileList  [I] Optional list of files to extract.  See NOTES.
+ *   LReserved [I] Reserved.  Must be NULL.
+ *   Reserved  [I] Reserved.  Must be 0.
+ *
+ * RETURNS
+ *   Success: S_OK.
+ *   Failure: E_FAIL.
+ *
+ * NOTES
+ *   FileList is a colon-separated list of filenames.  If FileList is
+ *   non-NULL, only the files in the list will be extracted from the
+ *   cab file, otherwise all files will be extracted.  Any number of
+ *   spaces, tabs, or colons can be before or after the list, but
+ *   the list itself must only be separated by colons.
+ *
+ * BUGS
+ *   Unimplemented.
+ */
+HRESULT WINAPI ExtractFilesW(LPCWSTR CabName, LPCWSTR ExpandDir, DWORD Flags,
+                             LPCWSTR FileList, LPVOID LReserved, DWORD Reserved)
+{
+
+    FIXME("(%s, %s, %d, %s, %p, %d) stub!\n", debugstr_w(CabName), debugstr_w(ExpandDir),
+          Flags, debugstr_w(FileList), LReserved, Reserved);
+
+    return E_FAIL;
+}
+
 /***********************************************************************
  *      FileSaveMarkNotExistA (ADVPACK.@)
  *