⎕HANDLE Handle to object

Implemented for Internal, External and System classes.

Syntax:

    integer ← objref.⎕HANDLE
    integer ← classref.⎕HANDLE
    integer ← ⎕HANDLE            (Within user-defined method, same as ⎕THIS.⎕HANDLE)

For External and System classes, ⎕HANDLE returns an integer containing a reference to a class or object, as seen by the external sub-system. For Internal classes it always returns zero. It is used for advanced low-level programming.

Depending on the external architecture, this handle can be used when you need to pass an object reference to custom low-level (non-APL) code, or use ⎕NA to call an external library routine. The meaning of the value returned is as follows: