两条语句就能够实现了: 1 this->newNC.setWindowFlags(Qt::WindowStaysOnTopHint); 2 this->newNC.show(); mark一下,防止以后忘了 相关文章: 2021-06-20 2022-12-23 2022-12-23 2022-12-23 2021-05-19 2022-12-23 2021-12-05 2022-12-23