Re: IP adrress of a network computer

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#14431

From: Jan Piessens
Date: Wed, 13 Aug 2003 19:31

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Remy Lebeau (TeamB) wrote:

> 
> <Jan Piessens> wrote in message news:3f37ee88@newsgroups.borland.com...
> 
> > I have fixed it with the next function:
> 
> That is slightly dangerous, as hosthostbyname() will return NULL if it
> fails, and then you would be accessing an invalid pointer.  You should
> always test return values before you use them, ie:
> 
>     void __fastcall TForm1::GetComputerIP(String sHost)
>     {
>         hostent *phost = gethostbyname(sHost.c_str());
>         if( phost )
>             Edit2->Text = inet_ntoa(*(in_addr*)phost->h_addr);
>         else
>             Edit2->Clear();
>     }
> 
> 
> Gambit

Thanks Gambit for the good tip.

Jan

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From: "Jan Piessens" <>
Subject: Re: IP adrress of a network computer
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