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switch_is

Specifies the expression or identifier acting as the union discriminant that selects the union member.

[switch_is]

Remarks

The switch_is C++ attribute has the same functionality as the switch_is MIDL attribute.

Example

See the case example for a sample use of switch_is.

Requirements

Attribute Context

Applies to

typedef

Repeatable

No

Required attributes

None

Invalid attributes

None

For more information about the attribute contexts, see Attribute Contexts.

See Also

Concepts

IDL Attributes

Typedef, Enum, Union, and Struct Attributes

switch_type

ATL Samples