What application is "using my screen" with some kind of overlay?
94865
Determine which app is drawing on top of other apps?
52831
How can I have a "show desktop" icon when scrolling through opened applications using Alt+Tab in 18.04?
30722
Use video file as a screensaver?
92122
How to switch to underlying window of the same application?
112645
How to take a screenshot of a whole desktop with app menu selection?
111306
How can I prevent an application (or user) from changing the screen resolution?
124918
How do I make windows save their position on screen after re-attaching a display?
135244
Can I modify unity keyboard shortcut overlay?
135068
Is it possible to use screen sharing without the remote screen being visible?
144027
A package to help with layout generation? Graph paper in the background?
39581
How to Lock/Unlock screen programmatically?
2696
What is the usefulness of a screensaver on a computer using a LCD monitor?
36744
Camera preview UI overlay on Android?
92544
Drawing overlay view on top of a web view
53686
Simulate x-screen?
72599
Fullscreen UIView with Status bar and Navigation Bar overlay on the top
46961
What's the source of those daily changing locked screen wallpapers on Windows 10?