Windows 7 的网络活动指示器

• 下载可执行文件 - 64.33 KB
• 下载源代码 VC6 - 67.21 KB
• 下载源代码 (VS 2010 Beta2) - 67.97 KB

引言

在 Windows XP 中，我习惯于启用“连接时在通知区域显示图标”，Windows 会显示一个闪烁的图标来指示系统托盘上的网络流量。
在 Windows 7 中，我只能获得一个静态图标来显示我已连接到网络，没有动画来显示流量。

我发现动画功能已被从 Windows 7 中移除，所以我决定创建一个简单的应用程序来满足那些（包括我自己）想要查看网络进出数据的人们。

很久以前，我开发了一个名为 Network Lights 的小工具，它会闪烁键盘 LED（发光二极管），指示网络接口上的传入和传出网络数据包。该工具及其源代码可以在这里找到：www.itsamples.com/network-lights.html。我将其重新制作以控制系统托盘图标而不是键盘 LED，并将其适配到 Windows 7 环境。

Using the Code

该程序的核心是一个单独的线程，它获取当前的 TCP、UDP 和 ICMP 统计信息，并决定应在系统托盘上显示哪个图标。

void TCPThread(LPVOID pInfo)
{
	MIB_TCPSTATS  mibTcpStats;
	MIB_UDPSTATS  mibUdpStats;
	MIB_ICMP      mibIcmpStats;

	UINT nCounter = 0;
	DWORD dwSegTcpRcvd = 0;
	DWORD dwSegTcpSent = 0;
	DWORD dwSegUdpRcvd = 0;
	DWORD dwSegUdpSent = 0;
	DWORD dwSegIcmpRcvd = 0;
	DWORD dwSegIcmpSent = 0;
	DWORD dwLocalOutSegs = 0;
	DWORD dwLocalInSegs = 0;

	while(m_bWorkContinue)
	{
		if(m_bSetIconContinue)
		{
			m_dwPacketsSent = 0;
			m_dwPacketsReceived = 0;

			m_bSetIconContinue = FALSE;

			if(m_bDisplayTCP)
			{
				if(GetTcpStatistics(&mibTcpStats) == NO_ERROR)
				{
					dwLocalInSegs = mibTcpStats.dwInSegs;
					dwLocalOutSegs = mibTcpStats.dwOutSegs;

					m_dwPacketsSent += dwLocalOutSegs;
					m_dwPacketsReceived += dwLocalInSegs;

					if(dwLocalOutSegs > dwSegTcpSent && 
						dwLocalInSegs > dwSegTcpRcvd)
					{
						dwSegTcpSent = dwLocalOutSegs;
						dwSegTcpRcvd = dwLocalInSegs;
						SetTrayIcon(NIM_MODIFY, 
							m_hActiveIcon);
						goto done;
					}
					else if(dwLocalOutSegs > dwSegTcpSent && 
						dwLocalInSegs <= dwSegTcpRcvd)
					{
						dwSegTcpSent = dwLocalOutSegs;
						SetTrayIcon
						(NIM_MODIFY, m_hSendIcon);
						goto done;
					}
					else if(dwLocalInSegs > dwSegTcpRcvd && 
						dwLocalOutSegs <= dwSegTcpSent)
					{
						dwSegTcpRcvd = dwLocalInSegs;
						SetTrayIcon(NIM_MODIFY, 
							m_hReceiveIcon);
						goto done;
					}
					else 
						nCounter++;

					if(nCounter == 10)
					{
						nCounter = 0;
						SetTrayIcon(NIM_MODIFY, 
							m_hInactiveIcon);
						goto done;
					}
				}
			}

			if(m_bDisplayUDP)
			{
				if(GetUdpStatistics(&mibUdpStats) == NO_ERROR)
				{
					dwLocalInSegs = mibUdpStats.dwInDatagrams;
					dwLocalOutSegs = mibUdpStats.dwOutDatagrams;

					m_dwPacketsSent += dwLocalOutSegs;
					m_dwPacketsReceived += dwLocalInSegs;

					if(dwLocalOutSegs > dwSegUdpSent && 
						dwLocalInSegs > dwSegUdpRcvd)
					{
						dwSegUdpSent = dwLocalOutSegs;
						dwSegUdpRcvd = dwLocalInSegs;
						SetTrayIcon(NIM_MODIFY, 
							m_hActiveIcon);
						goto done;
					}
					else if(dwLocalOutSegs > dwSegUdpSent && 
						dwLocalInSegs <= dwSegUdpRcvd)
					{
						dwSegUdpSent = dwLocalOutSegs;
						SetTrayIcon(NIM_MODIFY, 
							m_hSendIcon);
						goto done;
					}
					else if(dwLocalInSegs > dwSegUdpRcvd && 
						dwLocalOutSegs <= dwSegUdpSent)
					{
						dwSegUdpRcvd = dwLocalInSegs;
						SetTrayIcon(NIM_MODIFY, 
							m_hReceiveIcon);
						goto done;
					}
					else 
						nCounter++;

					if(nCounter == 10)
					{
						nCounter = 0;
						SetTrayIcon(NIM_MODIFY, 
							m_hInactiveIcon);
						goto done;
					}
				}
			}

			if(m_bDisplayICMP)
			{
				if(GetIcmpStatistics(&mibIcmpStats) == NO_ERROR)
				{
					dwLocalInSegs = 
					mibIcmpStats.stats.icmpInStats.dwMsgs;
					dwLocalOutSegs = 
					mibIcmpStats.stats.icmpOutStats.dwMsgs;

					m_dwPacketsSent += dwLocalOutSegs;
					m_dwPacketsReceived += dwLocalInSegs;

					if(dwLocalOutSegs > dwSegIcmpSent && 
						dwLocalInSegs > dwSegIcmpRcvd)
					{
						dwSegIcmpSent = dwLocalOutSegs;
						dwSegIcmpRcvd = dwLocalInSegs;
						SetTrayIcon(NIM_MODIFY, 
							m_hActiveIcon);
						goto done;
					}
					else if(dwLocalOutSegs > dwSegIcmpSent && 
						dwLocalInSegs <= dwSegIcmpRcvd)
					{
						dwSegIcmpSent = dwLocalOutSegs;
						SetTrayIcon(NIM_MODIFY, 
							m_hSendIcon);
						goto done;
					}
					else if(dwLocalInSegs > dwSegIcmpRcvd && 
						dwLocalOutSegs <= dwSegIcmpSent)
					{
						dwSegIcmpRcvd = dwLocalInSegs;
						SetTrayIcon(NIM_MODIFY, 
							m_hReceiveIcon);
						goto done;
					}
					else 
						nCounter++;

					if(nCounter == 10)
					{
						nCounter = 0;
						SetTrayIcon(NIM_MODIFY, 
							m_hInactiveIcon);
						goto done;
					}
				}
			}
done:
			m_bSetIconContinue = TRUE;
		}

		Sleep(m_nDuration);
	}

	m_hTcpThread = NULL;
}

与原始 Windows XP 工具（为每个接口提供单独的指示器）不同，此程序指示所有可用接口上的传入和传出网络数据包。

历史

• 初始发布：2009 年 11 月 20 日
• 更新：2010 年 1 月 14 日
  

  版本 1.2 允许您显示 ICMP 和 UDP 数据包，以字节为单位显示选定的网络接口流量，使用 Vista 风格的图标，并直接访问“网络连接”、“Windows 防火墙”和“网络和共享中心”小程序。