length_is
The latest version of this topic can be found at length_is.
Specifies the number of array elements to be transmitted.
Syntax
[ length_is(
"expression"
) ]
Parameters
expression
One or more C-language expressions. Empty argument slots are allowed.
Remarks
The length_is C++ attribute has the same functionality as the length_is MIDL attribute.
Example
See first_is for an example of how to specify a section of an array.
Requirements
Attribute Context
| Applies to | Field in struct or union, interface parameter, interface method |
| Repeatable | No |
| Required attributes | None |
| Invalid attributes | None |
For more information, see Attribute Contexts.
See Also
IDL Attributes
Typedef, Enum, Union, and Struct Attributes
Parameter Attributes
first_is
max_is
last_is
size_is
Attributes Samples