vc2005提示std::copy()不安全。安全版本怎么写？

2008-11-14 03:43:51 346 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

VC6.0升级至VS2005 引发的一些问题最近开发平台由VC6.0升级至VS2005，需要将原有的项目迁移，特将碰到的问题归纳如下：１消息映射VS2005对消息的检查更为严格，以前在VC6下完全正常运行的消息映射在VS2005下编译不通过a. ON_MESSAGE(message,OnMyMessage); OnMyMessage返回值必须为LRESULT，其形式为：afx_msg LRESULT OnMyMessage(WPAR 阅读详情

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VC98 和 VC2005下的Boost编译和安装导读：　　新项目准备用C++做,所以想趁机使用一下Boost.今天试着安装了一下. 　　首先下载Boost_1_34_1.zip和Boost-jam-3.1.15.zip前一个是boost主文件包,后一个是编译Boost库用的JAME工具. 　　现定义 %BOOST% 为Boost_1_34_1.zip的解压路径,%BOOST_BJAM%为Boost-jam-3.1.15.zip的解压路阅读详情

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DavidHsing 2008-11-16

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StringCchCopyN is a replacement for strncpy. StringCchCopyN copies a given number of characters from a source string. The size, in characters, of the destination buffer is provided to the function to ensure that StringCchCopyN does not write past the end of this buffer.

Syntax

HRESULT StringCchCopyN( LPTSTR pszDest,
size_t cchDest,
LPCTSTR pszSrc,
size_t cchSrc
);
Parameters

pszDest
[out] Pointer to a buffer which receives the copied characters.
cchDest
[in] Size of pszDest, in characters. This value must be large enough to hold the copied characters (the length of pszSrc or the value of cchSrc, whichever is smaller) plus 1 to account for the terminating null character. The maximum number of characters allowed is STRSAFE_MAX_CCH.
pszSrc
[in] Pointer to a buffer containing the source string. This source string must be null-terminated.
cchSrc
[in] The maximum number of characters to copy from pszSrc to pszDest.
Return Value

Note that this function returns an HRESULT as opposed to strncpy, which returns a pointer. It is strongly recommended that you use the SUCCEEDED and FAILED macros to test the return value of this function.

S_OK Source data was present, the characters were copied from pszSrc without truncation, and the resultant destination buffer is null-terminated.
STRSAFE_E_INVALID_PARAMETER The value in cchDest is either larger than STRSAFE_MAX_CCH, or the destination buffer is already full.
STRSAFE_E_INSUFFICIENT_BUFFER The copy operation failed due to insufficient buffer space. The destination buffer contains a truncated, null-terminated version of the intended result. In situations where truncation is acceptable, this may not necessarily be seen as a failure condition.

DavidHsing 2008-11-16

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StringCchCopyN
StringCbCopyN

cdpc0202 2008-11-14

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提示的同时应该会告诉你安全的是哪个。

vc2005提示std::copy()不安全。安全版本怎么写？

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