将char转换成wchar

    xiaoxiao2026-01-12  0

    

    1、将单字节Char转化为双字节的wchar_t的转换函数

     

    wchar_t* c2w(const char *str) {      int length = strlen(str)+1;      wchar_t *t = (wchar_t*)malloc(sizeof(wchar_t)*length);      memset(t,0,length*sizeof(wchar_t));      MultiByteToWideChar(CP_ACP,0,str,strlen(str),t,length);      return t; }

     

    //将单字节char*转化为宽字节wchar_t* wchar_t* AnsiToUnicode( const char* szStr ) {         int nLen = MultiByteToWideChar( CP_ACP, MB_PRECOMPOSED, szStr, -1, NULL, 0 );         if (nLen == 0)         {              return NULL;         }         wchar_t* pResult = new wchar_t[nLen];         MultiByteToWideChar( CP_ACP, MB_PRECOMPOSED, szStr, -1, pResult, nLen );         return pResult; }

    //将宽字节wchar_t*转化为单字节char* inline char* UnicodeToAnsi( const wchar_t* szStr ) {        int nLen = WideCharToMultiByte( CP_ACP, 0, szStr, -1, NULL, 0, NULL, NULL );        if (nLen == 0)        {              return NULL;        }        char* pResult = new char[nLen];        WideCharToMultiByte( CP_ACP, 0, szStr, -1, pResult, nLen, NULL, NULL );        return pResult; }

     

    2、char[] 转换为 LPWSTR

       解决方案:

       思路一:  使用CA2W字符转换宏(ATL and MFC String Conversion Macros)。         根据MSDN描述,这个宏用于将ANSI转换为Wide Character(UNICODE)

         代码如下:         LPWSTR   aaa   =   CA2W(text);         item.pszText = aaa;

       思路二:  使用int MultiByteToWideChar()函数。根据MSDN描述,这个方法:This  function maps a character string to a wide-character (Unicode)  string。

         代码如下:

            TCHAR aaa[31];         MultiByteToWideChar(0,0,text,31,aaa,62);

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