通过特定获取获取电脑外网IP地址
void get_WanIp() { char Buf_File_Read[MAX_PATH] = {0}; char IP_Temp[128]; char IP_Host[64]; int Result_URLDownloadToFile = 1; char szFilePath[MAX_PATH] = {0}; GetTempPathA(MAX_PATH,szFilePath); strcat(szFilePath,"IPinTheWorld.ini"); Result_URLDownloadToFile = URLDownloadToFileA(0,"http://ip.dnsexit.com/index.php",szFilePath,0,NULL); if(Result_URLDownloadToFile != 0)//若URLDownloadToFile()成功,返回0 { MessageBox(NULL, "网络故障,无法接入Internet,请联系网络管理员","提示",MB_ICONASTERISK); return ; } FILE *fp_Download_URL_File=NULL; if ((fp_Download_URL_File=fopen( szFilePath,"r")) == NULL) { MessageBox(NULL, "系统故障,无法打开IP文件,请检查防火墙设置或联系管理人员","提示",MB_ICONASTERISK); return ; } if ( fp_Download_URL_File != NULL ) { fseek(fp_Download_URL_File, 0, SEEK_SET); fread(Buf_File_Read,1,256,fp_Download_URL_File); fclose(fp_Download_URL_File); DeleteFile(szFilePath); } strcpy(g_szWanIp,Buf_File_Read); }
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