delphi – 如何以编程方式更改计算机的网络设置?

我在两个网络环境中使用我的笔记本电脑(在工作和家中),他们有不同的网络设置(IP地址,子网掩码,默认网关),所以我每次回到家,当我到达办公室时都要更改网络设置..无论如何编写一个可以更改设置的代码,以便我只需要运行程序而不是手动更改设置?

我google了一下,发现了this,但我找不到我的网卡名称,似乎代码只更改了IP地址和子网掩码,但它没有改变默认网关..我是否正确?

哦顺便问一下,如果你们可以使用delphi编程来回答我的问题(特别是delphi 7)会很棒

正如您所指出的,在此问题上发布的 code不会更改默认网关,为此,您还必须执行 SetGateways方法.

尝试使用此原始代码的修改版本,它允许您为网络适配器设置ip,掩码和默认网关.

{$APPTYPE CONSOLE}

{$R *.res}

uses
  SysUtils,
  ActiveX,
  Variants,
  ComObj;

procedure  SetStaticIpAddress(const NetworkCard, IPAddress, Mask, GateWay :string);
const
  WbemUser    ='';
  WbemPassword='';
  WbemComputer='localhost';
  wbemFlagForwardOnly = $00000020;
var
  FSWbemLocator   : OLEVariant;
  FWMIService     : OLEVariant;
  FWbemObjectSet  : OLEVariant;
  FWbemObject     : OLEVariant;
  FOutParams      : OLEVariant;
  vIpAddress      : OLEVariant;
  vGateWays       : OLEVariant;
  vMask           : OLEVariant;
  oEnum           : IEnumvariant;
  iValue          : LongWord;
begin
  FSWbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
  FWMIService   := FSWbemLocator.ConnectServer(WbemComputer, 'root\CIMV2', WbemUser, WbemPassword);

  FWbemObjectSet:= FWMIService.ExecQuery(Format('SELECT * FROM Win32_NetworkAdapterConfiguration Where Description="%s"',[NetworkCard]),'WQL',wbemFlagForwardOnly);
  oEnum         := IUnknown(FWbemObjectSet._NewEnum) as IEnumVariant;
  if oEnum.Next(1, FWbemObject, iValue) = 0 then
  begin
    vIpAddress   := VarArrayCreate([0, 0], varVariant);
    vIpAddress[0]:= IPAddress;
    vMask   := VarArrayCreate([0, 0], varVariant);
    vMask[0]:=  Mask;
    FOutParams:=FWbemObject.EnableStatic(vIpAddress, vMask);
    // 0 - Successful completion, no reboot required
    // 1 - Successful completion, reboot required
    Writeln(Format('EnableStatic ReturnValue  %s',[FOutParams]));

    vGateWays   := VarArrayCreate([0, 0], varVariant);
    vGateWays[0]:= GateWay;

    FOutParams:=FWbemObject.SetGateways(vGateWays);
    // 0 - Successful completion, no reboot required
    // 1 - Successful completion, reboot required
    Writeln(Format('SetGateways ReturnValue  %s',[FOutParams]));
  end
  else
  Writeln('Network card not found');
end;


begin
 try
    CoInitialize(nil);
    try
      SetStaticIpAddress('network device','192.168.1.1','255.255.255.0','192.168.1.2');
    finally
      CoUninitialize;
    end;
 except
    on E:EOleException do
        Writeln(Format('EOleException %s %x', [E.Message,E.ErrorCode]));
    on E:Exception do
        Writeln(E.Classname, ':', E.Message);
 end;
 Writeln('Press Enter to exit');
 Readln;
end.

注意..要获取网络设备名称,您可以使用网络连接列表

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