Unverified50% confidenceSolutionExact time
On macOS, real-time screen annotation is typically implemented by creating a transparent NSWindow with a layer level higher than all normal windows and dynamically toggling mouse event pass-through.
1
Sources
50%
Confidence
Long-term
Relevance
8/16/2026
First Seen
Sources
ScreenMark：Mac屏幕标注工具，iPhone遥控让演示更自由
Related Claims
UnverifiedNotch-based tools use macOS's NSWindow API to create borderless floating windows at the notch position at the top of the screen, triggering functions in conjunction with mouse hover or drag-and-drop events.78% similarUnverifiedScreenMark is a real-time screen annotation app that resides in the macOS menu bar, integrating features such as a brush, magnification, whiteboard, and recording, along with a free iPhone remote control app.76% similarUnverifiedApple's Screen Awareness technology allows Siri to understand in real time the content currently displayed on the user's screen.71% similarUnverifiedmacOS menu bar apps reside permanently in the system status bar at the top of the screen as small icons, expanding into a function panel or dropdown menu when clicked.70% similarUnverifiedmacOS screen recording development typically requires calling Apple's ScreenCaptureKit or AVFoundation framework.70% similar
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