switch_is

 

The latest version of this topic can be found at switch_is.

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

Syntax

  
[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

IDL Attributes
Typedef, Enum, Union, and Struct Attributes
switch_type
Attributes Samples