Using Cloakly
How window hiding works
A technical overview of how Cloakly excludes windows from screen capture.
The Windows Graphics Capture API
Cloakly uses the SetWindowDisplayAffinity Windows API to mark windows with the WDA_EXCLUDEFROMCAPTURE flag. This instructs the operating system to render the window as a solid black rectangle (or make it completely invisible) in any screen capture or recording — while leaving the window fully functional and visible on your physical display.
What others see
When a window is hidden, participants in a screen share will see nothing where that window is — either a blank area, the desktop behind it, or other open windows. They cannot see its contents at all.
What you see
You continue to see and interact with the window normally. There is no visual change on your end.
Performance impact
Because the exclusion is handled at the OS level, Cloakly adds virtually no CPU or GPU overhead. The window continues to render normally on your display.
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