C 网络流量计算相关头文件IPhlpapi.h等和一个简版流量监测代码

///有的老版vc没有(至少vc++ 6.0没有),可以在网上下载,编者可是在网上找了好久才找到 #include "Ex\\Iphlpapi.h" #pragma comment(lib, "IPHLPAPI.LIB") //////////////////////////////////////////////////////////////////////////////////////// /////////////////////////////////////全局变量 unsigned long download_speed_tmp=0; unsigned long upload_speed_tmp=0; MIB_IFROW *ifrow; CString opt; ///////////////////////////////////// /////////////////////////////////////////////////////////这段放在初始化函数OnInitDialog()中 //获取网卡索引_初始化 PIP_ADAPTER_INFO inf; ifrow = new MIB_IFROW[sizeof(MIB_IFROW)]; ULONG ulOutBufLen = sizeof(IP_ADAPTER_INFO); inf = (PIP_ADAPTER_INFO)malloc(ulOutBufLen); DWORD dwRetVal = GetAdaptersInfo(inf,&ulOutBufLen); if (dwRetVal == ERROR_BUFFER_OVERFLOW) { free(inf); inf = (IP_ADAPTER_INFO *) malloc (ulOutBufLen); dwRetVal = GetAdaptersInfo( inf, &ulOutBufLen); } ifrow->dwIndex=inf->Index; free(inf); //避免第一次显示值大 GetIfEntry(ifrow);//主要函数,获取信息 download_speed_tmp = ifrow->dwInOctets; upload_speed_tmp = ifrow->dwOutOctets; SetTimer(0,1000,NULL);//这里时间需设为1秒 //////////////////////////////////////////////////////////////////////////////////////// ////////////////////////////////////////////////////////////////////////////////////////这段放在OnTimer()中 void CXXX::OnTimer(UINT nIDEvent) { switch(nIDEvent) { case 0: GetIfEntry(ifrow);//主要函数,获取信息 download_speed = ( ifrow->dwInOctets-download_speed_tmp)/1024; download_speed_tmp = ((ifrow->dwInOctets-download_speed_tmp)%1024)*10/1024; opt.Format("%ld.%ld Kb/s",download_speed,download_speed_tmp); GetDlgItem(IDC_STATIC_DOWNLOAD_SPEED)->SetWindowText(opt);//IDC_STATIC_DOWNLOAD_SPEED是一个静态文本控件ID upload_speed = (ifrow->dwOutOctets-upload_speed_tmp)/1024; upload_speed_tmp = ((ifrow->dwOutOctets-upload_speed_tmp)%1024)*10/1024; opt.Format("%ld.%ld Kb/s",upload_speed,upload_speed_tmp); GetDlgItem(IDC_STATIC_UPLOAD_SPEED)->SetWindowText(opt); //IDC_STATIC_UPLOAD_SPEED 是一个静态文本控件ID download_speed_tmp = ifrow->dwInOctets; upload_speed_tmp = ifrow->dwOutOctets; break; } } ////////////////////////////////////////////////////////////////////////////////////////