unicode与多字节的字符串转换

最新推荐文章于 2023-07-31 14:53:36 发布

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最新推荐文章于 2023-07-31 14:53:36 发布

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本文详细解析了C++中API方式下字符到宽字符的转换过程，包括UNICODE定义下的WideCharToMultiByte函数和普通字符转换方法lstrcpy的实现原理。

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API方式

void TC2C(const PTCHAR tc, char * c) 
{ 
#if defined(UNICODE) 
WideCharToMultiByte(CP_ACP, 0, tc, -1, c, wcslen(tc), 0, 0); 
c[wcslen(tc)] = 0; 
#else 
lstrcpy((PTSTR)c, (PTSTR)tc); 
#endif 
}

<span style="font-family: Arial, Helvetica, sans-serif;"></span><div class="line number14 index13 alt1" style="font-family: Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace; border-top-left-radius: 0px !important; border-top-right-radius: 0px !important; border-bottom-right-radius: 0px !important; border-bottom-left-radius: 0px !important; background-image: none !important; border: 0px !important; bottom: auto !important; float: none !important; height: auto !important; left: auto !important; line-height: 1.8em !important; margin: 0px !important; outline: 0px !important; overflow: visible !important; padding: 0px 1em !important; position: static !important; right: auto !important; top: auto !important; vertical-align: baseline !important; width: auto !important; box-sizing: content-box !important; min-height: inherit !important;">void charTowchar(const char *chr, wchar_t *wchar)  
{     
<span style="white-space:pre">	</span>int size = strlen(chr)+1;
<span style="white-space:pre">	</span>MultiByteToWideChar( CP_ACP, 0, chr,  
<span style="white-space:pre">		</span>strlen(chr)+1, wchar, size/sizeof(wchar[0]) );  
}
</div>

ATL宏

#include "atlconv.h" 
 
void func()
  
{
  
 USES_CONVERSION; 
 
char *test = "i am a sucker";
  
 WCHAR *conv = A2W(strPic1) ;
  
}