LimitLabelsRadioButton
LimitLabelsRadioButton(const char* label, const char* minLabel,
button = new LimitLabelsRadioButton("No limit labels", NULL, NULL);
button = new LimitLabelsRadioButton("Normal limit labels", "Min", "Max");
button = new LimitLabelsRadioButton("Long limit labels",
LimitLabelsRadioButton* button = dynamic_cast<LimitLabelsRadioButton*>(
class LimitLabelsRadioButton;