苹果AI新动向：隐秘收购与人才招募揭示其下一代AI技术布局

setAttribute(Qt::WA_ShowWithoutActivating);

这会强制窗口不激活。即使有Qt::WindowStaysOnTopHint flag

出处：
Show window in Qt without stealing focus : https://stackoverflow.com/questions/966688/show-window-in-qt-without-stealing-focus