?菜鸟求救.急救.........

[zdk187624]

你们好:
怎样才能编一个程序来显示本机的IP地址(主要用着了哪几个函数).

[xcex]

gethostname

[xcex]

gethostbyname

[darkay]

先用gethostname得到本机器的名字，然后调用gethostbyname得到本机器的相关信息，函数具体怎么用的，你自己查MSDN啦。记得用WSAStartup哦

[xcex]

不过你其实可以先搜索一下的

[prog_st]

HOWTO: Retrieve the IP Address of the Remote PPP Peer

Q183988


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The information in this article applies to:

Microsoft Windows CE, version 2.0

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SUMMARY
There is a special host name called "ppp_peer" that serves as a proxy for the IP address of the remote PPP peer that the Windows CE device is connected to. This article demonstrates how to programmatically retrieve the IP address of the remote peer by using Windows Sockets gethostbyname() API with "ppp_peer".



MORE INFORMATION
The following sample code demonstrates how to programmatically retrieve the IP address of the remote peer by using Windows Sockets gethostbyname() API with "ppp_peer".

Sample Code

#include <windows.h>
#include <winsock.h>

#define MAXLEN 64

BOOL GetIpAddress(char * hostname);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPTSTR lpCmdLine, int nCmdSHow)
{
WSADATA wsadata;
HOSTENT *lpHost=NULL;
char hostname[MAXLEN];
WCHAR msg[128];
int ret, addrlen;
SOCKET sock;
struct sockaddr_in dest, retaddr;


WSAStartup(0x0101, &wsadata);

if ((ret = gethostname(hostname, MAXLEN)) != 0)
{
wsprintf(msg, L"Error calling gethostname: %d", ret);
MessageBox(NULL, msg, NULL, MB_OK);
}
else
{
wsprintf(msg, L"Hostname is: %S", hostname);
MessageBox(NULL, msg, L"Hostname", MB_OK);
}

// Print the local IP address.
MessageBox(NULL, L"Local IP address is", L"Address", MB_OK);
GetIpAddress (hostname);
// Print the remote peer IP address.
MessageBox(NULL, L"Remote IP address is", L"Address", MB_OK);
GetIpAddress ("ppp_peer");

WSACleanup();

return 0;
}



BOOL GetIpAddress(char *hostname)
{
WCHAR msg[128];
HOSTENT *lpHost=NULL;
struct sockaddr_in dest;

lpHost = gethostbyname(hostname);
if (lpHost == NULL)
{
wsprintf(msg, L"gethostbyname failed: %d", WSAGetLastError());
MessageBox(NULL, msg, NULL, MB_OK);
}
else
{
for(int i=0; lpHost->h_addr_list[i] != NULL ;i++)
{
memcpy(&(dest.sin_addr), lpHost->h_addr_list[i],
lpHost->h_length);
wsprintf(msg, L"IP address is: '%S'",
inet_ntoa(dest.sin_addr));
MessageBox(NULL, msg, L"IP Address", MB_OK);
}

}
return 0;
}

Additional query words:

Keywords : kbnetwork kbIP kbSDKPlatform kbWinCE200 kbWinsock kbGrpNet
Issue type : kbhowto
Technology :


Last Reviewed: October 15, 1999
© 2001 Microsoft Corporation. All rights reserved. Terms of Use.




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