| title |
length_is | Microsoft Docs |
| ms.custom |
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| ms.date |
11/04/2016 |
| ms.reviewer |
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| ms.suite |
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| ms.technology |
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| ms.tgt_pltfrm |
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| ms.topic |
language-reference |
| f1_keywords |
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| dev_langs |
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| helpviewer_keywords |
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| ms.assetid |
1d99b883-84bb-4b1e-b098-eb780fc94f40 |
| caps.latest.revision |
9 |
| author |
mikeblome |
| ms.author |
mblome |
| manager |
ghogen |
| translation.priority.ht |
cs-cz |
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Specifies the number of array elements to be transmitted.
[ length_is(
"expression"
) ]
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.
See first_is for an example of how to specify a section of an array.
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| 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.
IDL Attributes
Typedef, Enum, Union, and Struct Attributes
Parameter Attributes
first_is
max_is
last_is
size_is