Qt OSX 全屏窗口上层 menuBar 和 Dock

Question

Qt5.6, OS X El Capitan. I have a problem, I need to select an area on the screen to take a screenshot, but the menu bar and dock are always on my window.

My code:

QScreen *screen = QGuiApplication::primaryScreen();
QRect desktop = screen->virtualGeometry();

region = new SelectRegion;

region->setGeometry(desktop);
region->show();
region->focusWidget();
region->activateWindow();
region->raise();

Region Window has flags: Qt::Window, Qt::FramelessWindowHint, Qt::WindowStaysOnTopHint.

How to move my window to the top?

Answer 1

Qt::WindowFlags windowFlags =
        Qt::WindowStaysOnTopHint |
        Qt::BypassWindowManagerHint |
        Qt::FramelessWindowHint |
        Qt::NoDropShadowWindowHint |
        Qt::ToolTip;

setWindowFlags(windowFlags);

should do it...

Answer 2

标志 Qt::Popup 连同将其大小设置为屏幕的大小应该可以解决问题，但是请注意，它可能会破坏键盘焦点。