C2674 Error W/ Derived

Hieu Nguyen -- Hieu_Nguyen@cpqm.mail.saic.com
Tuesday, September 03, 1996

CMyString* CMyString::operator=( LPSTR str )
{
   CString::operator=( str );
   return this;
}

if this code is valid we don't have to rewrite code for CString::operator=()
as mentioned in article below:

>-----From: "(Bobby)Babak Lashkari" 
>
>overloaded operator = is not inherited and neither is the copy constructor.
>you should implement a operator = for your new class and copy the code from
                                                                              
        ^^^^^^^^^^^^^^^^^^^^^^
>CString::operator =.
  ^^^^^^^^^^^^^^^^^^^^^
>

---

Dulepov Dmitry -- dima@ssm6000.samsung.ru
Thursday, September 05, 1996

        [Mailer: "Groupware E-Mail". Version 1.0]

According to Bjarne Stroustrup your code is now correct (in part of=
 calling
base class operator=3D). But look to the definitions in AFX.H:

        const CString& operator=3D(const CString& stringSrc);
        const CString& operator=3D(TCHAR ch);
#ifdef _UNICODE
        const CString& operator=3D(char ch);
#endif
        const CString& operator=3D(LPCSTR lpsz);
        const CString& operator=3D(LPCWSTR lpsz);
        const CString& operator=3D(const unsigned char* psz);

Do you really need to return "CMyString*" instead of "const CString=
&" ? This is
not convenient in most cases. If you want to follow MFC definition =
style,
you may write something like this:

const CMyString& CMyString::operator=3D(LPSTR str)
{
    CString::operator=3D(str);
    return *this;
}

Good luck! :-)

Dmitry A. Dulepov
Groupware Group
Samsung Electronics Co., Ltd., Russian Research Center
Tel.: +7(095)213-9207
Fax.: +7(095)213-9196
E-Mail (Internet): dima@src.samsung.ru
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

-----------------------------
>        [From: Hieu Nguyen
>        [Address: Hieu_Nguyen@cpqm.mail.saic.com
>        [To: Dmitry A. Dulepov
>        [Date: Wed Sep 04 17:20:06 1996
>CMyString* CMyString::operator=3D( LPSTR str )
>{
>   CString::operator=3D( str );
>   return this;
>}
>
>if this code is valid we don't have to rewrite code for CString::o=
perator=3D()
>as mentioned in article below:
>
>>-----From: "(Bobby)Babak Lashkari" 
>>
>>overloaded operator =3D is not inherited and neither is the copy =
constructor.
>>you should implement a operator =3D for your new class and copy t=
he code from
>                                                                  =
            =

>        ^^^^^^^^^^^^^^^^^^^^^^
>>CString::operator =3D.
>  ^^^^^^^^^^^^^^^^^^^^^
>>
>
>=

---

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