C++Builder 获取本机连入公网的公网IP

我就是我 2022-10-01 03:56 199阅读 0赞

c++builder 2010 怎样获取本机的外网IP ? 本机连在了交换机局域网下。

C++Builder6的代码如下：

//---------------------------------------------------------------------------
    
    #include <vcl.h>
    #pragma hdrstop
    
    #include "Unit1.h"
    #include "urlmon.h"
    #include "stdio.h"
    #pragma link "D:\\Program Files\\Borland\\CBuilder6\\Lib\\Psdk\\urlmon.lib"//此处根据你的实际情况修改
    //---------------------------------------------------------------------------
    #pragma package(smart_init)
    #pragma resource "*.dfm"
    TForm1 *Form1;
    //---------------------------------------------------------------------------
    __fastcall TForm1::TForm1(TComponent* Owner)
            : TForm(Owner)
    {
    }
    //---------------------------------------------------------------------------
    
    void __fastcall TForm1::Button1Click(TObject *Sender)
    {
        int APIENTRY WinMain(HINSTANCE hInstance,
                             HINSTANCE hPrevInstance,
                             LPSTR     lpCmdLine,
                             int       nCmdShow);
        {
            char buf[MAX_PATH] = {0};
            char chTempIp[128];
            char chIP[64];
            URLDownloadToFile(0,"http://www.ip138.com/ip2city.asp","IPinTheWorld.ini",0,NULL);
            FILE *fp=fopen( "IPinTheWorld.ini", "r" );
    
            if ( fp != NULL )
            {
                fseek(fp, 0, SEEK_SET);
                fread(buf,1,256,fp);
                fclose(fp);
                char* iIndex = strstr(buf,"[");
                if (iIndex)
                {
                    sprintf( chTempIp,"%s",iIndex);
                    int nBuflen = strlen(chTempIp);
                    for (int i =0; i<nBuflen; i++)
                    {
                        chIP[i] = chTempIp[i+1];
                        if (chTempIp[i] == ']')
                        {
                            chIP[i-1] = '\0';
                            DeleteFile("IPinTheWorld.ini");
                            continue;
                        }
    
                    }
                }
    
            }
            MessageBox(NULL, chIP,chIP,0);
        }
    }
    //---------------------------------------------------------------------------

参考：http://blog.csdn.net/hacksouls/article/details/3511762

IP地址：