MobileScreen.TopLayoutGuide
From Xojo Documentation
Read-Only Property (As Object )
The top layout guide for the Screen.
Notes
This is used when creating iOSLayoutConstraints. For a Screen, iOSLayoutConstraint.AttributeTypes.Top is the absolute top of the View. TopLayoutGuide is adjusted for things such as a NavigationBar.
Compatibility
iOS project types on iOS and iPadOS operating systems.