共享一点资料
好些人打听程序禁用启用网络的代码。
今天整理了一下，做成一个函数，贴出来算了。
#include
//编译链接的需要setupapi.lib库
//—————————————————————-
//函数名： DisableNetInterface
//创建人： sam young
//创建时间：2004-4-12
//函数功能：禁用/启用网络
//参数： bool bStatus，true：禁用网络，false：启用网络
//—————————————————————-
BOOL DisableNetInterface(bool bStatus)
{
IN LPTSTR HardwareId;//硬件ComponentId，注册表地址：system\currentcontrolset\class\{4D36E972-E325-11CE-BFC1-08002BE10318}000
HardwareId=”PCI\\VEN_10EC&DEV_8139&SUBSYS_813910EC”;
DWORD NewState;
if(bStatus)
{
NewState=DICS_DISABLE;//禁用
}
else
{
NewState=DICS_ENABLE;//启用
}
//调用ddk函数，来禁用网卡
DWORD i,err;
BOOL Found=false;
HDEVINFO hDevInfo;
SP_DEVINFO_DATA spDevInfoData;
//访问系统的硬件库
hDevInfo=SetupDiGetClassDevs(NULL,”PCI”,NULL,DIGCF_ALLCLASSES | DIGCF_PRESENT);
if (hDevInfo == INVALID_HANDLE_VALUE)
{
gpMainDlg->PrintMsg(”访问系统硬件出错！”,ERRORMSG);
return false;
}
//枚举硬件，获得需要的接口
spDevInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
for (i=0;SetupDiEnumDeviceInfo(hDevInfo,i,&spDevInfoData);i++)
{
DWORD DataT;
LPTSTR p,buffer = NULL;
DWORD buffersize = 0;
//获得硬件的属性值
while (!SetupDiGetDeviceRegistryProperty(
hDevInfo,
&spDevInfoData,
SPDRP_HARDWAREID,
&DataT,
(PBYTE)buffer,
buffersize,
&buffersize))
{
if (GetLastError() == ERROR_INVALID_DATA)
{
//不存在HardwareID. Continue.
break;
}
else if (GetLastError() == ERROR_INSUFFICIENT_BUFFER)
{
//buffer size不对.
if (buffer)
LocalFree(buffer);
buffer =(char *) LocalAlloc(LPTR,buffersize);
}
else
{
//未知错误
goto cleanup_DeviceInfo;
}
}
if (GetLastError() == ERROR_INVALID_DATA)
continue;
//比较，找到和网卡ID相同的项
for (p=buffer;*p&&(p<&buffer[buffersize]);p+=lstrlen(p)+sizeof(TCHAR))
{
if (!_tcscmp(HardwareId,p))
{
//找到网卡
Found = TRUE;
break;
}
}
if (buffer)
LocalFree(buffer);
//如果相等
if (Found)
{
//禁用该设备
SP_PROPCHANGE_PARAMS spPropChangeParams;
spPropChangeParams.ClassInstallHeader.cbSize=sizeof(SP_CLASSINSTALL_HEADER);
spPropChangeParams.ClassInstallHeader.InstallFunction=DIF_PROPERTYCHANGE;
spPropChangeParams.Scope=DICS_FLAG_GLOBAL;
spPropChangeParams.StateChange=NewState;//禁用：DICS_DISABLE，DICS_ENABLE启用
//
if(!SetupDiSetClassInstallParams(hDevInfo,&spDevInfoData,(SP_CLASSINSTALL_HEADER *)&spPropChangeParams,sizeof(spPropChangeParams)))
{
DWORD errorcode=GetLastError();
}
if(!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE,hDevInfo,&spDevInfoData))
{
DWORD errorcode=GetLastError();
}
switch(NewState)
{
case DICS_DISABLE:
PrintMsg("成功禁用网络！");
break;
case DICS_ENABLE:
PrintMsg("成功启用网络！");
break;
}
break;
}
}
//退出时，清理工作环境
cleanup_DeviceInfo:
err = GetLastError();
SetupDiDestroyDeviceInfoList(hDevInfo);
SetLastError(err);
return true;
}
26条留言 立即发表评论
禁用网卡的方法不可靠
我按此方法禁用网卡,有几次会造成死机,不知为何?,如何办?
问题出在这一句:
SetupDiCallClassInstaller(DIF_PROPERTYCHANGE,hDevInfo,&spDevInfoData)
程序死在此处,
此时网卡已不能手工恢复(网上邻居->属性->网络和拨号连接->本地连接->属性->禁用或恢复),
只能将计算机重启才能恢复,有避免的办法吗?
另: 天网防火墙中的 “接通/断开网络” 功能是如何实现的,有相应VC代码吗?
这位朋友，能否留言的时候留下名字和email，要不然一看这什么都没有，两眼一抹黑，呵呵。
你这个问题，我后来也遇到过，确实有点问题。但这并不是一成不变的，其中的一些方法你可以改变。我当时因为设备是确定的，所以在获取操作系统硬件库的时候，直接用的是已经注册好的HardwareId，而且我的网卡确认是PCI接口的，因此我在
SetupDiGetClassDevs(NULL,”PCI”,NULL,DIGCF_ALLCLASSES | DIGCF_PRESENT)
这个函数中，指定了硬件接口是PCI的，很多网卡，特别是笔记本上的网卡，可能不是PCI的，而是PCMCIA这样的硬件接口。
我提供的这个函数在我后来对系统调试的时候，已经作了修改。
你如果需要，给我MAIL，我给你发过来，共你参考。
我的MAIL：samway@gmail.com，或者sam@paowang.net
希望对你有用。
8月3日的E-MAIL 收到,谢谢!
windows 2000 server 下禁用网卡造成网卡不能恢复确实时有发生,如安装了”3721上网助手”,则每次不能恢复,
我一直想不明白为何?请指教!
删除了3721上网助手,通常情况下,大概4次中3次成功,1次造成死机,但上网后则每次不能恢复,我猜想:可能有些与网卡有关的进程需在禁用网卡之前停止,但不知具体如何处理?
具体的情况我也不大清楚，或许你把你的代码发给我分析一下可以知道原因。
就这样描述我实在不大明白。我自己用了那么多次，没怎么出过问题。
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