add_label_to_sizer (_grid, _fade_out_label, true, wxGBPosition(r, 0));
_grid->Add (_fade_out, wxGBPosition(r, 1), wxGBSpan(1, 3));
++r;
add_label_to_sizer (_grid, _fade_out_label, true, wxGBPosition(r, 0));
_grid->Add (_fade_out, wxGBPosition(r, 1), wxGBSpan(1, 3));
++r;