WindowStaysOnTopHint

WindowStaysOnTopHint is a window flag in the Qt framework used to request that a top-level window remain above most other windows in the stacking order. It is intended for utility windows, alerts, or palettes that should remain visible while the user interacts with other parts of the application.

In Qt, the flag is represented as Qt::WindowStaysOnTopHint. It can be applied to a window’s configuration by modifying its window flags, for example by calling setWindowFlag(Qt::WindowStaysOnTopHint, true) or by combining flags with setFlags and applying the result. After changing flags, the window typically needs to be shown or refreshed for the change to take effect.

The exact effect of WindowStaysOnTopHint depends on the platform and the window manager. On some systems it maps to a top-most window that is kept above regular windows, while on others it may be treated as a hint and subject to interference from user actions or system policies. It is not an absolute guarantee of staying above all other windows.

Usage considerations include balancing user experience and disruption. Using a top-most window can be helpful for transient alerts or persistent utility windows, but overuse can hinder navigation or annoy users. It is often advisable to combine this flag with appropriate window modality, sizing, and behavior to ensure a non-disruptive experience.

See also: Qt::WindowFlags, other window-related flags in Qt, and platform-specific window management behavior.