[Qt]界面效果setWindowFlags()

顶级窗口可以有这些标志控制：

Qt::MSWindowsFixedSizeDialogHint Gives the window a thin dialog border on Windows. This style is traditionally used for fixed-size dialogs.

Qt::MSWindowsOwnDC Gives the window its own display context on Windows.

Qt::BypassWindowManagerHint This flag can be used to indicate to the platform plugin that "all" window manager protocols should be disabled. This flag will behave different depending on what operating system the application is running on and what window manager is running. The flag can be used to get a native window with no configuration set.

Qt::X11BypassWindowManagerHint Bypass the window manager completely. This results in a borderless window that is not managed at all (i.e., no keyboard input unless you call QWidget::activateWindow() manually).

Qt::FramelessWindowHint Produces a borderless window. The user cannot move or resize a borderless window via the window system. On X11, the result of the flag is dependent on the window manager and its ability to understand Motif and/or NETWM hints. Most existing modern window managers can handle this.

Qt::NoDropShadowWindowHint Disables window drop shadow on supporting platforms.