error_status_t
Remarks
The error_status_t
keyword designates a type for an object that contains communication-status or
fault-status information.
The error_status_t
type is used as a part of the exception handling architecture in IDL. This type
maps to an unsigned long. Applications that catch error situations have an out
parameter or a return type of a procedure specified as error_status_t,
and qualify the error_status_t with the comm_status or fault_status attributes in the ACF. If
the parameter or return type was not qualified with the comm_status or fault_status
attributes, then the parameter operates as though it were an unsigned long.
The MIDL 2.0
compiler generates stubs that contain the proper error handling architecture.
However, earlier versions of the MIDL compiler handled a parameter or return
type of error_status_t as though the comm_status and fault_status
attributes were applied, even if they were not. With the MIDL 2.0 compiler, you
must explicitly apply the comm_status and fault_status attributes
to the parameter or procedure in the ACF.
The error_status_t
type is one of the predefined types of the interface definition language. Predefined
types can appear as type specifiers in typedef declarations, in general
declarations, and in function declarators (either as the function-return-type
or as parameter-type specifiers).
See Also