unicode下各种类型转换CString、string

把最近用到的各种unicode下类型转换总结了一下：

1、string转CString

string a=”abc”;

              CString str=CString(a.c_str());

              或str.format("%s", a.c_str())

2、int转CString

    Int a;

CString Cstr;

              Cstr.Format(_T("%d"),a);

3、char 转 CString 

CString.format("%s", char*);

例：

              char  szPath[];

              CString Cstr;

              Cstr.Format(_T("%s"),szPath);

4、CString转string
              CString C_str=_T("abc");

string str((LPCSTR)CStringA(C_str));

              或string str=CStringA(C_str);

              或通过char*中转

       CString m_str(_T("qwerg"));

       char *chr=new char[m_str.GetLength()+1];

       WideCharToMultiByte(CP_ACP,0,m_str.GetBuffer(),-1,chr,m_str.GetLength()+1,NULL,NULL);

       string str=chr;

或者CString C_str = _T("ooqoqoq");

 //   setlocale(LC_ALL, "chs");

      char *p = new char[C_str.GetLength()+1];

      wcstombs(p,C_str,C_str.GetLength()+1);

      string str = p;

       用下面代码检测：

              MessageBox((CString)str.c_str());

5、CString转const char*

              CString a=_T(“  ”);

              CStringA b(a);

              const char *c=new char(50);

          c=b.GetString();

或者：

CString FilePath=_T(“   ”);

       int len=WideCharToMultiByte( CP_ACP,0,FilePath.AllocSysString(),FilePath.GetLength(),NULL,0,NULL,NULL);

              char * pAscii =new char[len];

len=WideCharToMultiByte(CP_ACP,0,FilePath.AllocSysString(),FilePath.GetLength(),pAscii,len+1,NULL,NULL);

              pAscii[len]=0;    

              const char* path=(const char*)pAscii;

6、CString转char*

       CString strPath = _T("啊啊啊");

       int nLength = strPath.GetLength();

       int nBytes = WideCharToMultiByte(CP_ACP,0,strPath,nLength,NULL,0,NULL,NULL);

       char* VoicePath = new char[ nBytes + 1];

       memset(VoicePath,0,nLength + 1);

       WideCharToMultiByte(CP_OEMCP, 0, strPath, nLength, VoicePath, nBytes, NULL, NULL);

       VoicePath[nBytes] = 0;

 

7、CString转int

              CString str=_T("123");

              int b=_ttoi(str);

              或者转成string，再转int

8、char 转 string 
string s(char *);

9、char[]转LPWSTR

直接强制转换

10、string转char*

把string转换为char* 有3中方法：
1.data
如：
string str="abc";
char *p=str.data();
2.c_str
如：string str="gdfd";
    char *p=str.c_str();
3. copy
比如
string str="hello";
char p[40];
str.copy(p,5,0); //这里5，代表复制几个字符，0代表复制的位置
*(p+5)='\0'; //要手动加上结束符
cout <</span> <</span>p;

11、string转int

        string num;

        int a=atoi(num.c_str());

 12 、int转string

#include

      stringstream ss;

int n = 123;
    string str;
    ss<<n;
    ss>>str;