Verifies that an object reference points to a valid ABL or .NET class-based object instance or an ABL handle-based object. If the object reference represents an object that is currently valid, the function returns TRUE. If the object reference is no longer valid (for example, it was garbage collected or explicitly deleted), the function returns FALSE.
An object reference defined for an ABL or .NET object type. For more information, see the Class-based object reference reference entry.