message: Use ListBox::selected() in FileIo::fileSelected()
diff: @@ -119,7 +119,7 @@ void FileIo::scanDirectory(const std::string& directory)
  void FileIo::fileSelected()
  {
  - txtFileName.text(mListBox.selectionText());
  + txtFileName.text(mListBox.isItemSelected() ? mListBox.selected().text : "");
  }
  