Hello,

I am having difficulties in writing a c++ prog that uses C code to send an icmp
packet (icmpapi.h, ipexport.h (used by icmpapi.h)).  This is what my code looks
like so far:



-------------------------------------
#include <iostream>
#include <windows.h>

extern "C" {
#include <icmpapi.h>
}

int main(){
using namespace std;
HANDLE icmp;
icmp = IcmpCreateFile();

cout << "hello";
return 0;
}
________________________________________________


It compiles but then i get an error that says:

_______________________________________________
hello.obj(hello)
Error 42: Symbol Undefined _IcmpCreateFile@0

--- errorlevel 1
_______________________________________________




Before i added the:
extern "C"

I would get the error:

_____________________________________________________________________
hello.obj(hello)
Error 42: Symbol Undefined ?IcmpCreateFile@@YGPAXXZ (void *stdcall
IcmpCreateFile (void ))

--- errorlevel 1
_____________________________________________________________________


Any insight would be greatly appreciated.  Is there a way to send a custom icmp packet using C++ libraries?  This might help some.  The code for sending the exact packet I need to send is already written in C for me, so ideally I would like to write a C++ prog that does some extra work but also sends the icmp packet (exactly as written in the already existing C code that I have).


Thank you,

David S

You've got to include the library in the link that contains IcmpCreateFile ().

Jan



david wrote:
> Hello,
> 
> I am having difficulties in writing a c++ prog that uses C code to send an icmp
> packet (icmpapi.h, ipexport.h (used by icmpapi.h)).  This is what my code looks
> like so far:
> 
> 
> 
> -------------------------------------
> #include <iostream>
> #include <windows.h>
> 
> extern "C" {
> #include <icmpapi.h>
> }
> 
> int main(){
> using namespace std;
> HANDLE icmp;
> icmp = IcmpCreateFile();
> 
> cout << "hello";
> return 0;
> }
> ________________________________________________
> 
> 
> It compiles but then i get an error that says:
> 
> _______________________________________________
> hello.obj(hello)
> Error 42: Symbol Undefined _IcmpCreateFile@0
> 
> --- errorlevel 1
> _______________________________________________
> 
> 
> 
> 
> Before i added the:
> extern "C" 
> 
> I would get the error:
> 
> _____________________________________________________________________
> hello.obj(hello)
> Error 42: Symbol Undefined ?IcmpCreateFile@@YGPAXXZ (void *stdcall
> IcmpCreateFile (void ))
> 
> --- errorlevel 1
> _____________________________________________________________________
> 
> 
> Any insight would be greatly appreciated.  Is there a way to send a custom icmp
> packet using C++ libraries?  This might help some.  The code for sending the
> exact packet I need to send is already written in C for me, so ideally I would
> like to write a C++ prog that does some extra work but also sends the icmp
> packet (exactly as written in the already existing C code that I have).
> 
> 
> Thank you,
> 
> David S
> 
> 


-- 
ManiaC++
Jan Knepper

But as for me and my household, we shall use Mozilla...
www.mozilla.org

The file that contains IcmpCreateFile () is icmpapi.h and i've included that
file in my prog.  Is this what you mean by including the library in the link
that contains IcmpCreateFile ()?


In article <cugg6l$2tn3$1@digitaldaemon.com>, Jan Knepper says...
>
>You've got to include the library in the link that contains IcmpCreateFile ().
>
>Jan
>
>
>
>david wrote:
>> Hello,
>> 
>> I am having difficulties in writing a c++ prog that uses C code to send an icmp
>> packet (icmpapi.h, ipexport.h (used by icmpapi.h)).  This is what my code looks
>> like so far:
>> 
>> 
>> 
>> -------------------------------------
>> #include <iostream>
>> #include <windows.h>
>> 
>> extern "C" {
>> #include <icmpapi.h>
>> }
>> 
>> int main(){
>> using namespace std;
>> HANDLE icmp;
>> icmp = IcmpCreateFile();
>> 
>> cout << "hello";
>> return 0;
>> }
>> ________________________________________________
>> 
>> 
>> It compiles but then i get an error that says:
>> 
>> _______________________________________________
>> hello.obj(hello)
>> Error 42: Symbol Undefined _IcmpCreateFile@0
>> 
>> --- errorlevel 1
>> _______________________________________________
>> 
>> 
>> 
>> 
>> Before i added the:
>> extern "C"
>> 
>> I would get the error:
>> 
>> _____________________________________________________________________
>> hello.obj(hello)
>> Error 42: Symbol Undefined ?IcmpCreateFile@@YGPAXXZ (void *stdcall
>> IcmpCreateFile (void ))
>> 
>> --- errorlevel 1
>> _____________________________________________________________________
>> 
>> 
>> Any insight would be greatly appreciated.  Is there a way to send a custom icmp packet using C++ libraries?  This might help some.  The code for sending the exact packet I need to send is already written in C for me, so ideally I would like to write a C++ prog that does some extra work but also sends the icmp packet (exactly as written in the already existing C code that I have).
>> 
>> 
>> Thank you,
>> 
>> David S
>> 
>> 
>
>
>-- 
>ManiaC++
>Jan Knepper
>
>But as for me and my household, we shall use Mozilla... www.mozilla.org

"david" <david_member@pathlink.com> wrote in message news:cugnfk$3ul$1@digitaldaemon.com...
> The file that contains IcmpCreateFile () is icmpapi.h and i've included
that
> file in my prog.  Is this what you mean by including the library in the
link
> that contains IcmpCreateFile ()?

No, icmpapi.h is likely just a list of declarations. In the library would be the code to implement it. It'll have a .lib extension. Look in the comments in your header file, maybe it says where the corresponding library file is. icmpapi.h is not one of the files that comes with DMC++, nor is its corresponding library file.