OSHandle
From Xojo Documentation
Class (inherits from Object)
New in 2021r3
Takes an Integer or a Ptr, converting both to Integer. For use with declares.
Notes
Use this class when you need to be able to pass both Integers and pointers to the same declare.
Consider a method in your Xojo code called Foo that accepts an OSHandle as a parameter. That method could then create a declare that accepts an Integer. When you call the declare method, you could then pass it a variable of type OSHandle which could have been assigned either an Integer or a Ptr.
See Also
Declare keyword, External Methods topic