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range (C++) | Microsoft Docs |
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| ms.date |
11/04/2016 |
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| ms.technology |
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| ms.tgt_pltfrm |
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| ms.topic |
language-reference |
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| ms.assetid |
f352f79e-ecb3-4cdd-9cdd-8406ef473594 |
| caps.latest.revision |
10 |
| author |
mikeblome |
| ms.author |
mblome |
| manager |
ghogen |
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Specifies a range of allowable values for arguments or fields whose values are set at run time.
low
The low range value.
high
The high range value.
Remarks
The range C++ attribute has the same functionality as the range MIDL attribute.
// cpp_attr_ref_range.cpp
// compile with: /LD
#include <unknwn.h>
[module(name="MyLib")];
[object, uuid("9E66A290-4365-11D2-A997-00C04FA37DDB")]
__interface ICustom {
HRESULT Custom([in] long l, [out, retval] long *pLong);
HRESULT length_is1([in, range(0, 999)] long f, [in, length_is(f)] char array[10]);
HRESULT length_is2([in, range(-99, -1)] long f, [in, length_is("f"), size_is(10)] char *array);
};
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| Applies to |
Interface method, interface parameter |
| Repeatable |
No |
| Required attributes |
None |
| Invalid attributes |
None |
For more information about the attribute contexts, see Attribute Contexts.
IDL Attributes
Method Attributes
Parameter Attributes
Data Member Attributes