length_is
Specifies the number of array elements to be transmitted.
[ 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.