setStyleSheet 为以下字符串,选中,未选中,有焦点,无焦点时显示不一样的图片
QString("QCheckBox::indicator:unchecked{image:url(%1);}" "QCheckBox::indicator:checked{image:url(%2);}" "QCheckBox::indicator:unchecked:focus{image:url(%3);}" "QCheckBox::indicator:checked:focus{image:url(%4);}" "").arg("/unchecked.png", "/checked.png", "/unchecked2.png", "/checked2.png");