//CString to stringstring CStringToString(const CString &cstr){    string str=cstr.GetBuffer(0);    cstr.ReleaseBuffer();    return str;}void CStringToStringEx(const CString &cstr, string &str){    str=cstr.GetBuffer(0);    cstr.ReleaseBuffer();}//string to CStringCString StringToCString(const string &str){    CString cstr=str.c_str();    return cstr;}void StringToCStringEx(const string &str, CString &cstr){    cstr=str.c_str();}//CStringA to stringstring CStringAToString(const CStringA &cstra){    string str=cstra.GetBuffer(0);    cstra.ReleaseBuffer();    return str;}void CStringAToStringEx(const CStringA &cstra, string &str){    str=cstra.GetBuffer(0);    cstra.ReleaseBuffer();}//CStringW to stringstring CStringWToString(const CStringW &cstrw){    CStringA ctsra(cstrw.GetBuffer(0));    cstrw.ReleaseBuffer();    string str=cstra.GetBuffer(0);    cstra.ReleaseBuffer();    return str;}void CStringWToStringEx(const CStringW &cstrw, string &str){    CStringA ctsra(cstrw.GetBuffer(0));    cstrw.ReleaseBuffer();    str=cstra.GetBuffer(0);    cstra.ReleaseBuffer();}