+off_t wxFileOutputStream::TellO() const
+{
+  return wxFile::Tell();
+}
+
+off_t wxFileOutputStream::SeekO(off_t pos, wxSeekMode mode)
+{
+  return wxFile::Seek(pos, mode);
+}
+
+void wxFileOutputStream::Sync()
+{
+  wxFile::Flush();
+}
+
+// ----------------------------------------------------------------------------
+// wxFileStream
+// ----------------------------------------------------------------------------
+
+wxFileStream::wxFileStream(const wxString& fileName)
+  : wxFile(fileName, read_write)