[Winpcap-users] wpcap.dll & Visual C++.net

[Hirtzel, Doug-p8094c]

I am writing a simple application targeted for Visual C++.net 2008.

I have read numerous FAQ & message boards that talk about the Common
Language Runtime (CLR) and managed vs unmanaged. But they seem to refer
more to console based programs.
http://www.codeguru.com/Cpp/COM-Tech/complus/managed/article.php/c3947
http://www.winpcap.org/misc/faq.htm#Q-29
<http://www.winpcap.org/misc/faq.htm>  pcap_int.h is not in the release
directory. Where can I get this file? Or what is the definition of
struct pcap?

I have added the following lines to the stdafx.h file.
struct  pcap {};
typedef struct pcap        pcap_t;
typedef struct pcap_dumper pcap_dumper_t;
typedef struct pcap_if     pcap_if_t;
typedef struct pcap_addr   pcap_addr_t;

typedef void (*pcap_handler)(u_char *, const struct pcap_pkthdr *, const
u_char *);

Is this the correct location for these declarations or should they go in
the Form1.h file inside the namespace wfa_send_packet { } section?
They compile in both locations.

I have added the following lines to the Form1.h namespace
wfa_send_packet { } section.

	using namespace System::Runtime::InteropServices;
	[DllImport("wpcap.dll")]    extern "C" int  pcap_open_live(const
char *, int, int, int, char *);

But problems persist when trying to call pcap_open_live.
			pcap_t *fp;
			/* Open the Ethernet I/O adapter */
			if ((fp = pcap_open_live(c_io_adapter_name, //
name of the device
	
65536,			    // portion of the packet to capture. It
doesn't matter in this case 
	
1,				    // promiscuous mode (nonzero means
promiscuous)
	
1000,			    // read timeout
	
errbuf			    // error buffer
	
)) == NULL)
			{
				fprintf(stderr,"\nUnable to open the
adapter. %s is not supported by WinPcap\n", c_io_adapter_name);
				return 2;
			}
error C2440: '=' : cannot convert from 'int' to 'pcap_t *'

Can anyone direct me with a simple project with what needs to be done to
implement winpcap in Visual C++.net Windows Form Applications?

Doug

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