获取居于网内的机器名

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获取局域网内的机器名

2006-08-29 12:15

unit main;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ImgList,ExtCtrls, ComCtrls;

type
TNetResourceArray = ^TnetResource;
TForm1 = class(TForm)
    TreeView1: TTreeView;
    ImageList: TImageList;
    StatusBar: TStatusBar;
    procedure FormShow(Sender: TObject);
    procedure TreeView1Click(Sender: TObject);
private
    { Private declarations }
    procedure GetComputerName; //获取计算机名
public
    { Public declarations }
end;
//function NetExecute(aFormClass: TFormClass): string;
var
Form1: TForm1;
node: Ttreenode;
aComputerName : string;//全局变量，存储选中的主机名
implementation

{$R *.dfm}

procedure TForm1.FormShow(Sender: TObject);
var
NetResource: TNetResource;
Buf: Pointer;
Count, BufSize, Res: DWORD;
lphEnum: THandle;
p: TNetResourceArray;
i, j: SmallInt;
NetworkTypeList: TList;
my_node_1: Ttreenode;
begin
node := treeview1.Items.add(Treeview1.topitem, '整个网络');
node.imageindex := 0;
treeview1.SetFocus;
statusbar.panels[0].text := '正在列举域名...，请稍侯';
statusbar.refresh;
screen.Cursor := crHourGlass;
NetworkTypeList := TList.Create;
//获取整个网络中的文件资源的句柄，lphEnum为返回名柄
Res := WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK,
    RESOURCEUSAGE_CONTAINER, nil, lphEnum);
if Res <> NO_ERROR then exit; //执行失败
//获取整个网络中的网络类型信息
Count := $FFFFFFFF; //不限资源数目
BufSize := 8192; //缓冲区大小设置为8K
GetMem(Buf, BufSize); //申请内存，用于获取工作组信息
Res := WNetEnumResource(lphEnum, Count, Pointer(Buf), BufSize);
if (Res = ERROR_NO_MORE_ITEMS) //资源列举完毕
    or (Res <> NO_ERROR) //执行失败
    then Exit;
P := TNetResourceArray(Buf);
for I := 0 to Count - 1 do //记录各个网络类型的信息
begin
    NetworkTypeList.Add(p);
    Inc(P);
end;
//WNetCloseEnum关闭一个列举句柄
Res := WNetCloseEnum(lphEnum); //关闭一次列举
if Res <> NO_ERROR then exit;

for J := 0 to NetworkTypeList.Count - 1 do //列出各个网络类型中的所有工作组名称
begin //列出一个网络类型中的所有工作组名称
    NetResource := TNetResource(NetworkTypeList.Items[J]^); //网络类型信息
//获取某个网络类型的文件资源的句柄，NetResource为网络类型信息，lphEnum为返回名柄
    Res := WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK,
      RESOURCEUSAGE_CONTAINER, @NetResource, lphEnum);
    if Res <> NO_ERROR then break; //执行失败

    while true do //列举一个网络类型的所有工作组的信息
    begin
      Count := $FFFFFFFF; //不限资源数目
      BufSize := 8192; //缓冲区大小设置为8K
      GetMem(Buf, BufSize); //申请内存，用于获取工作组信息
              //获取一个网络类型的文件资源信息，
      Res := WNetEnumResource(lphEnum, Count, Pointer(Buf), BufSize);
      if (Res = ERROR_NO_MORE_ITEMS) //资源列举完毕
        or (Res <> NO_ERROR) //执行失败
        then break;
      P := TNetResourceArray(Buf);
      for I := 0 to Count - 1 do //列举各个工作组的信息
      begin
        my_node_1 := treeview1.Items.addchild(node, StrPAS(P^.lpRemoteName)); //取得一个工作组的名称
        my_node_1.imageindex := 1;
        Inc(P);
      end;
    end;
    Res := WNetCloseEnum(lphEnum); //关闭一次列举
    if Res <> NO_ERROR then break; //执行失败
end;
FreeMem(Buf);
NetworkTypeList.Destroy;
screen.Cursor := crDefault;
statusbar.panels[0].text := '';
statusbar.refresh;
end;

procedure TForm1.GetComputerName;
var
NetResource: TNetResource;
Buf: Pointer;
Count, BufSize, Res: DWORD;
ind: integer;
lphEnum: THandle;
Temp: TNetResourceArray;
groupname : string;
my_node: Ttreenode;
my_node_2: ttreenode;
begin
screen.Cursor := crHourGlass;
statusbar.panels[0].text := '正在列举组名...，请稍侯';
statusbar.refresh;
my_node := treeview1.Selected;
groupname := treeview1.Selected.Text;
FillChar(NetResource, SizeOf(NetResource), 0); //初始化网络层次信息
NetResource.lpRemoteName := @GroupName[1]; //指定工作组名称
NetResource.dwDisplayType := RESOURCEDISPLAYTYPE_SERVER; //类型为服务器（工作组）
NetResource.dwUsage := RESOURCEUSAGE_CONTAINER;
NetResource.dwScope := RESOURCETYPE_DISK; //列举文件资源信息
//获取指定工作组的网络资源句柄
Res := WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK,
    RESOURCEUSAGE_CONTAINER, @NetResource, lphEnum);
if Res <> NO_ERROR then Exit; //执行失败
while True do //列举指定工作组的网络资源
begin
    Count := $FFFFFFFF; //不限资源数目
    BufSize := 8192; //缓冲区大小设置为8K
    GetMem(Buf, BufSize); //申请内存，用于获取工作组信息
   //获取计算机名称
    Res := WNetEnumResource(lphEnum, Count, Pointer(Buf), BufSize);
    if Res = ERROR_NO_MORE_ITEMS then break; //资源列举完毕
    if (Res <> NO_ERROR) then Exit; //执行失败
    Temp := TNetResourceArray(Buf);
    for Ind := 0 to Count - 1 do //列举工作组的计算机名称
    begin
      my_node_2 := treeview1.Items.AddChild(my_node, Temp^.lpRemoteName + 2);
      my_node_2.imageindex := 2;
      Inc(Temp);
    end;
end;
Res := WNetCloseEnum(lphEnum); //关闭一次列举
if Res <> NO_ERROR then exit; //执行失败
FreeMem(Buf);
screen.Cursor := crDefault;
statusbar.panels[0].text := '';
statusbar.refresh;
end;

procedure TForm1.TreeView1Click(Sender: TObject);
begin
if treeview1.selected.level = 1 then
begin
    if treeview1.Selected.count = 0 then
    //添加计算机名
      GetComputerName;
end;
end;

end