string、wstring、cstring、 char、 tchar、int、dword转换方法.doc

本文来自网络,链接地址:weijian/archive/2011/11/24/
string、wstring、cstring、 char、 tchar、int、dword转换方法
1》string转wstring
wstring s2ws(const string& s)
{
_bstr_t t = ();
wchar_t* pwchar = (wchar_t*)t;
wstring result = pwchar;
return result;
}
2》wstring转string
string ws2s(const wstring& ws)
{
_bstr_t t = ();
char* pchar = (char*)t;
string result = pchar;
return result;
}
3》string转cstring 
a)("%s", ());  
 
b)CString StringToCString(string str)
{
CString result;
for (int i=0;i<(int)();i++)
{
 result+=str[i];
}
return result;
}
 
4》cstring转string
a)void ConvertCString2string(CString& strSrc,std::string& strDes)
{
#ifndef UNICODE
strDes = strSrc;
#else USES_CONVERSION;
strDes = W2A(());
();
#endif
}
b)
string s(());  
ReleaseBuffer();
GetBuffer()后一定要ReleaseBuffer(),否则就没有释放缓冲区所占的空间.
c)
string CStringToString(CString cstr)
{
string result((),'e');
for (int i=0;i<();i++)
{
 result[i]=(char)cstr[i];
}
return result;
}
5》string转char *
a)char *p = ();
举例: string aa("aaa"); char *c=(); string mngName; char t[200]; memset(t,0,200); strcpy(t,());
b)一个一个字符的赋值
 
char *p = new char[sring的长度+1];
p[string的长度]='/0';
但是要注意最后赋值'/0'!!!
 
char * StringToChar(string &s