DoSuperMethodA

Perform method on object coerced to superclass.

Boopsi support function that invokes the supplied message on the specified object, as though it were the superclass of the specified class.

cl

Pointer to boopsi class whose superclass is to receive the message

obj

Pointer to boopsi object

msg

Pointer to method-specific message to send

result

Class and message-specific result or NULL if either the cl or the obj pointer is NULL.

DoSuperMethodA() checks if the either the cl or obj pointer is NULL and will return immediately if this is the case, indicating failure.

This function first appears in the V37 release of amiga.lib. While it intrinsically does not require any particular release of the system software to operate, it is designed to work with the boopsi subsystem of Intuition, which was only introduced in V36.

Some early example code may refer to this function as DSM().

CoerceMethodA(), DoMethodA(), DoSuperMethod(), <intuition/classusr.h> ROM Kernel Manual boopsi section