qt窗口置顶 - 技术栈

qt窗口置顶

但行技术2024-05-15 18:21

设置Qt::WindowStaysOnTopHint

bash 复制代码

 this->setWindowFlags(Qt::Tool| Qt::FramelessWindowHint|Qt::WindowStaysOnTopHint|Qt::X11BypassWindowManagerHint);

Qt::WindowStaysOnTopHint帮助文档

bash 复制代码

Informs the window system that the window should stay on top of all other windows. Note that on some window managers on X11 you also have to pass Qt::X11BypassWindowManagerHint for this flag to work correctly.

windows下

如果不是第一时间启动，还需在类构造函数设置

cpp 复制代码

#ifdef Q_OS_WIN32
    ::SetWindowPos(HWND(this->winId()), HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW);
#endif

唤醒

cpp 复制代码

#ifdef Q_OS_WIN32
    ::SetWindowPos(HWND(this->winId()), HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW);
#endif
    this->show();
    this->setWindowState(this->windowState() & ~Qt::WindowMinimized);
    this->raise();
    this->activateWindow();