Structure and Union Attributes

Use the switch_* attributes to specify the characteristic of a union in a remote procedure call. Use the ignore attribute to designate certain structure or union members as local to the client application.

Attribute	Usage
switch	Selects the discriminant for an encapsulated union.
switch_is	Identifies the discriminant for a nonencapsulated union.
switch_type	Identifies the type of the discriminant for a nonencapsulated union.
ignore	Designates that a pointer contained in a structure or union and the object indicated by the pointer is not to be transmitted.

 

You can also use the array and sized pointer attributes to specify characteristics of structure or union members.