混乱的字符串转换(转)

来源：互联网发布：怎样用vba编写软件编辑：程序博客网时间：2024/05/29 10:51

http://hi.baidu.com/jwz_hz/blog/item/9b79bc596cb144d89c82049c.html

1.char *strtok(char *s, char *delim);
功能：分解字符串为一组字符串。s为要分解的字符串，delim为分隔符字符串。
说明：首次调用时，s指向要分解的字符串，之后再次调用要把s设成NULL。

2.<string.h> or <wchar.h>or<mbstring.h>
int _stricmp(
   const char *string1,
   const char *string2
);
int _wcsicmp(
   const wchar_t *string1,
   const wchar_t *string2
);
int _mbsicmp(
   const unsigned char *string1,
   const unsigned char *string2
);
int _stricmp_l(
   const char *string1,
   const char *string2,
   _locale_t locale
);
int _wcsicmp_l(
   const wchar_t *string1,
   const wchar_t *string2,
   _locale_t locale
);
int _mbsicmp_l(
   const unsigned char *string1,
   const unsigned char *string2,
   _locale_t locale
);
这几个函数对字符串做比较的时候会先把字符串转换成小写，然后做比较。如：
char string1[] = "The quick brown dog jumps over the lazy fox";
char string2[] = "The QUICK brown dog jumps over the lazy fox";
   strcmp:   String 1 is greater than string 2
   _stricmp: String 1 is equal to string 2
3数据类型转换
TCHAR-->bstr       BSTR bsFileName=::T2BSTR(szFileName);
bstr-->ATL::CString    CString strFileName=bsFileName;
Atl::CString-->const char *     int nFileNameLen=strFileName.GetLength()*4+1;    char *buffer=new char[nFileNameLen];    strcpy(buffer,CT2A(strFileName));
bstr-->tchar BSTR bstr;     TCHAR *pt = OLE2T(bstr); 或者 #include <atlconv.h> BSTR bstr;   USES_CONVERSION; TCHAR *pt = OLE2T(bstr);   或者 BSTR bstrUpdate = _com_util::ConvertStringToBSTR(XXX); SysFreeString(bstrUpdate);
CString－>TCHAR*的转化可以用函数GetBuff()
函数原型为：LPTSTR GetBuffer( int nMinBufLength );CString str("CString"); TCHAR* szMsg = new TCHAR[100]; //其参数为CString字符串的长度 szMsg = str.GetBuffer(str.GetLength()); str.ReleaseBuffer(); delete []szMsg; szMsg = NULL;
TCHAR*－>CString的转化
TCHAR szTchar[18] = L"TCHAR";      CString str;      str.Format(_T("%s"),szTchar);
Unicode和ANSI之间转换
namespace _com::util
{
//char*-->bstr
BSTR ConvertStringToBSTR(const char * pSrc);//反过来用ConvertBSTRToString
}