From: Damian Yerrick <Bullcr_pd_yerrick AT hotmail DOT comRemoveBullcr_p>
Newsgroups: comp.os.msdos.djgpp,comp.lang.c++
Subject: Re: OOP in DJGPP- Sharing member functions
Organization: Pin Eight Software  http://pineight.8m.com/
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NNTP-Posting-Date: Mon, 07 Aug 2000 04:14:09 GMT
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Date: Mon, 07 Aug 2000 04:14:09 GMT
To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

On Sat, 05 Aug 2000 18:04:30 -0700, Ardy Falls <ardy AT addr DOT com> wrote:

>Hi, I was wondering how to make two classes share a function member
>where BOTH classes can call that function. I tried it with the friend
>operator but it did not work.
>here is an example of what I'm trying to do... There is that actual code
>below the diagram.

Look up the friend keyword.  It can expose a private or protected
method or field to another particular class.

I'll refer you to comp.lang.c++ for a full explanation.

>                 thanks a million,
>                            ardy
>                    http://www.addr.com/~ardy/
>
> [-----object
>1---------]
>[----object 2---------]
> [    void set_pos(void); ] ---- thay share the same function------> [
>void set_pos(void); ]
> [-----------------------]
>[ ---------------------]
>
>[----- main------------]
>[  object 2.set_pos();  ]
>[----------------------]
>
>
>----------------------------here is the actual
>code-------------------------------
>
>#include <iostream.h>
>
>class baseclass {
>   protected:
>      long HANDLE;
>   public:
>      void ActionProc(void);
>};
>void baseclass::ActionProc(void){
>   cout<<"ActionProc Sucsesfully Called"<<endl;
>};
>
>class otherclass {
>   protected:
>      long HANDLE;
>   public:
>      friend void baseclass::ActionProc(void);
>};
>
>class ourclass:baseclass {
>   public:
>      otherclass a;
>      void callit(void);
>};
>void ourclass::callit(void) {
>   a.ActionProc();
>}
>void main(void) {
>   ourclass b;
>   b.callit();
>}
>


-- 
Damian Yerrick
"I refuse to listen to those who refuse to listen to reason."
See the whole sig: http://www.rose-hulman.edu/~yerricde/sig.html

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