为什么我得到以下代码的以下警告:)
码：
_stprintf(m_szFileNamePath,_T("%s"),strFileName);
warning C4996: ‘_swprintf’: swprintf has been changed to conform with the ISO C standard,adding an extra character count parameter. To use traditional Microsoft swprintf,set _CRT_NON_CONFORMING_SWPRINTFS.
我知道_strprintf是一个宏,如果定义_UNICODE将评估为_swprintf,否则它将是sprintf.
现在这是什么_swprintf.有一个函数swprintf,但为什么_stprintf评估为_swprintf而不是swprintf.
b / w _xxx和xxx有什么区别？
编辑：
好的,_stprintf的UNICODE版本有两个定义,其中一个包含在内？
tchar.h或strsafe.h中的那个？
http://msdn.microsoft.com/en-us/library/ybk95axf%28VS.80%29.aspx
swprintf is a wide-character version of sprintf; the pointer arguments to swprintf are wide-character strings. Detection of encoding errors in swprintf may differ from that in sprintf. swprintf and fwprintf behave identically except that swprintf writes output to a string rather than to a destination of type FILE,and swprintf requires the count parameter to specify the maximum number of characters to be written. The versions of these functions with the _l suffix are identical except that they use the locale parameter passed in instead of the current thread locale.
In Visual C++ 2005,swprintf conforms to the ISO C Standard,which requires the second parameter,count,of type size_t. To force the old nonstandard behavior,define _CRT_NON_CONFORMING_SWPRINTFS. In a future version,the old behavior may be removed,so code should be changed to use the new conformant behavior.
