如何取得网上邻居的计算机名称

[zhangco]

请问如何取得网上邻居的计算机名称?

[Firing_Sky]

unit netres_main_unit;

interfaceuses
Windows, Messages,SysUtils,Classes,Graphics,Controls,Forms,Dialogs,
ComCtrls, StdCtrls, Buttons, Menus, ExtCtrls;
type TfrmMain = class(TForm)
tvResources: TTreeView;
btnOK: TBitBtn;
btnClose: TBitBtn;
Label1: TLabel;
barBottom: TStatusBar;
popResources: TPopupMenu;
mniExpandAll: TMenuItem;
mniCollapseAll: TMenuItem;
mniSaveToFile: TMenuItem;
mniLoadFromFile: TMenuItem;
grpListType: TRadioGroup;
grpResourceType: TRadioGroup;
dlgOpen: TOpenDialog;
dlgSave: TSaveDialog;
procedure FormCreate(Sender: TObject);
procedure btnCloseClick(Sender: TObject);
procedure FormShow(Sender: TObject);
procedure mniExpandAllClick(Sender: TObject);
procedure mniCollapseAllClick(Sender: TObject);
procedure mniSaveToFileClick(Sender: TObject);
procedure mniLoadFromFileClick(Sender: TObject);
procedure btnOKClick(Sender: TObject);
private
ListType, ResourceType: DWORD;
procedure ShowHint(Sender: TObject);
procedure DoEnumeration;
procedure DoEnumerationContainer(NetResContainer: TNetResource);
procedure AddContainer(NetRes: TNetResource);
procedure AddShare(TopContainerIndex: Integer; NetRes:TNetResource);
procedure AddShareString(TopContainerIndex: Integer; ItemName:String);
procedure AddConnection(NetRes: TNetResource);
public
{ Public declarations }
end;


var
frmMain: TfrmMain;

implementation
{$R *.DFM}
procedure TfrmMain.ShowHint(Sender: TObject);
begin
barBottom.Panels.Items[0].Text:=Application.Hint;
end;
procedure TfrmMain.FormCreate(Sender: TObject);
begin
Application.OnHint:=ShowHint;
barBottom.Panels.Items[0].Text:='';
end;
procedure TfrmMain.btnCloseClick(Sender: TObject);
begin
Close;
end;
{ Enumerate through all network resources:}
procedure TfrmMain.DoEnumeration;
var
NetRes: Array[0..2] of TNetResource;
Loop: Integer;
r, hEnum, EntryCount, NetResLen: DWORD;
begin
case grpListType.ItemIndex of
{ Connected resources: }
1: ListType:=RESOURCE_CONNECTED;
{ Persistent resources: }
2: ListType:=RESOURCE_REMEMBERED;
{ Global: }
else ListType:=RESOURCE_GLOBALNET;
end;
case grpResourceType.ItemIndex of { Disk resources: }
1: ResourceType:=RESOURCETYPE_DISK; { Print resources: }
2: ResourceType:=RESOURCETYPE_PRINT; { All: }
else
ResourceType:=RESOURCETYPE_ANY;
end;
Screen.Cursor:=crHourGlass;
try { Delete any old items in the tree view: }
for Loop:=tvResources.Items.Count-1 downto 0 do
tvResources.Items[Loop].Delete;
except
end; { Start enumeration: }
r:=WNetOpenEnum(ListType,ResourceType,0,nil,hEnum);
if r<>NO_ERROR then
begin
if r=ERROR_EXTENDED_ERROR then
MessageDlg('Unable to Enumerate the Network.'+#13+
'A network-specific error occurred.',mtError,[mbOK],0)
else
MessageDlg('Unable to Enumerate the Network.',mtError,[mbOK],0);
Exit;
end;
try
{ We got a valid enumeration handle; walk the resources: }
while (1=1) do
begin
EntryCount:=1;
NetResLen:=SizeOf(NetRes);
r:=WNetEnumResource(hEnum,EntryCount,@NetRes,NetResLen);
case r of
0: begin { It's a container, iterate it: }
if NetRes[0].dwUsage=RESOURCEUSAGE_CONTAINER then
DoEnumerationContainer(NetRes[0])
else
{ Persistent and connected resources show up here: }
if ListType in [RESOURCE_REMEMBERED,RESOURCE_CONNECTED] then
AddConnection(NetRes[0]);
end; { Done: }
ERROR_NO_MORE_ITEMS: Break; { Other error: }
else
begin
MessageDlg('Error Walking Resources.',mtError,[mbOK],0);
Break;
end;
end;
end;
finally
Screen.Cursor:=crDefault;
{ Close enumeration handle: }
WNetCloseEnum(hEnum);
end;
end;
{ Enumerate through the specified container:
This function is usually recursively called.}
procedure TfrmMain.DoEnumerationContainer(NetResContainer:TNetResource);
var
NetRes: Array[0..10] of TNetResource;
TopContainerIndex: Integer;
r, hEnum, EntryCount, NetResLen: DWORD;
begin
{ Add container name to tree view: } AddContainer(NetResContainer);
{ Keep track of this item as current root: }
TopContainerIndex:=tvResources.Items.Count-1;
{ Start enumeration: }
if ListType=RESOURCE_GLOBALNET then { Enumerating global net: }
r:=WNetOpenEnum(ListType,ResourceType,RESOURCEUSAGE_CONTAINER,
@NetResContainer,hEnum)
else
{ Enumerating connections or persistent (won't normally get here):}
r:=WNetOpenEnum(ListType,ResourceType,RESOURCEUSAGE_CONTAINER,
nil,hEnum);
{ Couldn't enumerate through this container; just make a note
of it and continue on: }
if r<>NO_ERROR then
begin
AddShareString(TopContainerIndex,'<Couldn''t Enumerate Resources(Error #'+
IntToStr(r)+'>');
WNetCloseEnum(hEnum);
Exit;
end;
{ We got a valid enumeration handle; walk the resources: }
while (1=1) do
begin
EntryCount:=1;
NetResLen:=SizeOf(NetRes);
r:=WNetEnumResource(hEnum,EntryCount,@NetRes,NetResLen);
case r of
0: begin
{ Yet another container to enumerate; call this function
recursively to handle it: }
if (NetRes[0].dwUsage=RESOURCEUSAGE_CONTAINER) or
(NetRes[0].dwUsage=10) then DoEnumerationContainer(NetRes[0])
else
case NetRes[0].dwDisplayType of
{ Top level type: } RESOURCEDISPLAYTYPE_GENERIC,
RESOURCEDISPLAYTYPE_DOMAIN,
RESOURCEDISPLAYTYPE_SERVER: AddContainer(NetRes[0]);
{ Share: }
RESOURCEDISPLAYTYPE_SHARE:
AddShare(TopContainerIndex,NetRes[0]);
end;
end;
ERROR_NO_MORE_ITEMS: Break;
else
begin
MessageDlg('Error #'+IntToStr(r)+' WalkingResources.',mtError,[mbOK],0);
Break;
end;
end;
end;
{ Close enumeration handle: }
WNetCloseEnum(hEnum);
end;
procedure TfrmMain.FormShow(Sender: TObject);
begin
DoEnumeration;
end;
{Add item to tree view; indicate that it is a container:}
procedure TfrmMain.AddContainer(NetRes: TNetResource);
var
ItemName: String;
begin
ItemName:=Trim(String(NetRes.lpRemoteName));
if Trim(String(NetRes.lpComment))<>'' then begin
if ItemName<>'' then
ItemName:=ItemName+' ';
ItemName:=ItemName+'('+String(NetRes.lpComment)+')';
end;
tvResources.Items.Add(tvResources.Selected,ItemName);
end;
{ Add child item to container denoted as current top:}
procedure TfrmMain.AddShare(TopContainerIndex: Integer; NetRes:TNetResource);
var
ItemName: String;
begin
ItemName:=Trim(String(NetRes.lpRemoteName));
if Trim(String(NetRes.lpComment))<>'' then
begin
if ItemName<>'' then ItemName:=ItemName+' ';
ItemName:=ItemName+'('+String(NetRes.lpComment)+')';
end;
tvResources.Items.AddChild(tvResources.Items[TopContainerIndex],ItemName);
end;
{Add child item to container denoted as current top;
this just adds a string for purposes such as being unable
to enumerate a container. That is, the container's shares
are not accessible to us.}
procedure TfrmMain.AddShareString(TopContainerIndex: Integer;ItemName: String);
begin
tvResources.Items.AddChild(tvResources.Items[TopContainerIndex],ItemName);
end;
{ Add a connection to the tree view.
Mostly used for persistent and currently connected resources to be displayed.}
procedure TfrmMain.AddConnection(NetRes: TNetResource);
var
ItemName: String;
begin
ItemName:=Trim(String(NetRes.lpLocalName));
if Trim(String(NetRes.lpRemoteName))<>'' then
begin
if ItemName<>'' then ItemName:=ItemName+' ';
ItemName:=ItemName+'-> '+Trim(String(NetRes.lpRemoteName));
end;
tvResources.Items.Add(tvResources.Selected,ItemName);
end;
{ Expand all containers in the tree view:}
procedure TfrmMain.mniExpandAllClick(Sender: TObject);
begin
tvResources.FullExpand;end;
{ Collapse all containers in the tree view:}
procedure TfrmMain.mniCollapseAllClick(Sender: TObject);
begin
tvResources.FullCollapse;
end;
{ Allow saving of tree view to a file:}
procedure TfrmMain.mniSaveToFileClick(Sender: TObject);
begin
if dlgSave.Execute then tvResources.SaveToFile(dlgSave.FileName);
end;
{Allow loading of tree view from a file:}
procedure TfrmMain.mniLoadFromFileClick(Sender: TObject);
begin
if dlgOpen.Execute then tvResources.LoadFromFile(dlgOpen.FileName);end;
{Rebrowse:}
procedure TfrmMain.btnOKClick(Sender: TObject);
begin
DoEnumeration;
end;

end.

[Firing_Sky]

哇！搞错了，贴出的是Delphi的代码……
不过，它的思想可以搬到VB里面去
1、WNetOpenEnum打开资源枚举
2、然后用WNetEnumResource来逐个的枚举网络资源
具体的用法可以参看这儿Delphi的用法，也可以察看MSDN