message: ShowTestWindow -> ShowDemoWindow
diff: @@ -941,7 +941,7 @@ void MainApp::render()
  {
  imgui_setnextwindowsize( 800, 600 );
  - ImGui::ShowTestWindow( &m_show_imgui_test_window );
  + ImGui::ShowDemoWindow( &m_show_imgui_test_window );
  }
  if ( m_show_imgui_style_editor )
  