在窗體中添加二個Panel,二個SpeedButton,一個StatusBar1,一個ImageList1控件,如圖:
unit U_NET;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, Buttons, ComCtrls, ExtCtrls, ImgList;
type
TNetResourceArray = ^TnetResource;
TfrmNet = class(TForm)
StatusBar: TStatusBar;
Panel1: TPanel;
TreeView: TTreeView;
Panel2: TPanel;
btnOK: TSpeedButton;
btnCancel: TSpeedButton;
ImageList: TImageList;
procedure FormActivate(Sender: TObject);
procedure TreeViewClick(Sender: TObject);
procedure btnOKClick(Sender: TObject);
procedure btnCancelClick(Sender: TObject);
private
procedure GetComputerName; //獲取計算機名
procedure GetGroupName; //獲取組名
{ Private declarations }
public
{ Public declarations }
end;
//打開窗體,並返回選定的計算機名。
function NetExecute(aFormClass: TFormClass): string;
var
frmNet: TfrmNet;
node: Ttreenode;
aComputerName : string;//全局變量,存儲選中的主機名
implementation
{$R *.DFM}
//打開窗體,並返回選定的計算機名。
function NetExecute(aFormClass: TFormClass): string;
begin
aComputerName := '';
with aFormClass.Create(Application) do
begin
try
showModal;
finally
free;
end;
result := aComputerName;
end;
end;
procedure TfrmNet.FormActivate(Sender: TObject);
begin
node := treeview.Items.add(Treeview.topitem, '整個網絡');
node.imageindex := 0;
treeview.SetFocus;
end;
//獲取組名
procedure TfrmNet.GetGroupName;
var
NetResource: TNetResource;
Buf: Pointer;
Count, BufSize, Res: DWORD;
lphEnum: THandle;
p: TNetResourceArray;
i, j: SmallInt;
NetworkTypeList: TList;
my_node_1: Ttreenode;
begin
statusbar.panels[0].text := '正在列舉域名...,請稍侯';
statusbar.refresh;
screen.Cursor := crHourGlass;
NetworkTypeList := TList.Create;
//獲取整個網絡中的文件資源的句柄,lphEnum爲返回名柄
Res := WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK,
RESOURCEUSAGE_CONTAINER, nil, lphEnum);
if Res <> NO_ERROR then exit; //執行失敗
//獲取整個網絡中的網絡類型信息
Count := $FFFFFFFF; //不限資源數目
BufSize := 8192; //緩衝區大小設置爲8K
GetMem(Buf, BufSize); //申請內存,用於獲取工作組信息
Res := WNetEnumResource(lphEnum, Count, Pointer(Buf), BufSize);
if (Res = ERROR_NO_MORE_ITEMS) //資源列舉完畢
or (Res <> NO_ERROR) //執行失敗
then Exit;
P := TNetResourceArray(Buf);
for I := 0 to Count - 1 do //記錄各個網絡類型的信息
begin
NetworkTypeList.Add(p);
Inc(P);
end;
//WNetCloseEnum關閉一個列舉句柄
Res := WNetCloseEnum(lphEnum); //關閉一次列舉
if Res <> NO_ERROR then exit;
for J := 0 to NetworkTypeList.Count - 1 do //列出各個網絡類型中的所有工作組名稱
begin //列出一個網絡類型中的所有工作組名稱
NetResource := TNetResource(NetworkTypeList.Items[J]^); //網絡類型信息
//獲取某個網絡類型的文件資源的句柄,NetResource爲網絡類型信息,lphEnum爲返回名柄
Res := WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK,
RESOURCEUSAGE_CONTAINER, @NetResource, lphEnum);
if Res <> NO_ERROR then break; //執行失敗
while true do //列舉一個網絡類型的所有工作組的信息
begin
Count := $FFFFFFFF; //不限資源數目
BufSize := 8192; //緩衝區大小設置爲8K
GetMem(Buf, BufSize); //申請內存,用於獲取工作組信息
//獲取一個網絡類型的文件資源信息,
Res := WNetEnumResource(lphEnum, Count, Pointer(Buf), BufSize);
if (Res = ERROR_NO_MORE_ITEMS) //資源列舉完畢
or (Res <> NO_ERROR) //執行失敗
then break;
P := TNetResourceArray(Buf);
for I := 0 to Count - 1 do //列舉各個工作組的信息
begin
my_node_1 := treeview.Items.addchild(node, StrPAS(P^.lpRemoteName)); //取得一個工作組的名稱
my_node_1.imageindex := 1;
Inc(P);
end;
end;
Res := WNetCloseEnum(lphEnum); //關閉一次列舉
if Res <> NO_ERROR then break; //執行失敗
end;
FreeMem(Buf);
NetworkTypeList.Destroy;
screen.Cursor := crDefault;
statusbar.panels[0].text := '';
statusbar.refresh;
end;
//獲取計算機名
procedure TfrmNet.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 := '正在列舉組名...,請稍侯';
statusbar.refresh;
my_node := treeview.Selected;
groupname := treeview.Selected.Text;
FillChar(NetResource, SizeOf(NetResource), 0); //初始化網絡層次信息
NetResource.lpRemoteName := @GroupName[1]; //指定工作組名稱
NetResource.dwDisplayType := RESOURCEDISPLAYTYPE_SERVER; //類型爲服務器(工作組)
NetResource.dwUsage := RESOURCEUSAGE_CONTAINER;
NetResource.dwScope := RESOURCETYPE_DISK; //列舉文件資源信息
//獲取指定工作組的網絡資源句柄
Res := WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK,
RESOURCEUSAGE_CONTAINER, @NetResource, lphEnum);
if Res <> NO_ERROR then Exit; //執行失敗
while True do //列舉指定工作組的網絡資源
begin
Count := $FFFFFFFF; //不限資源數目
BufSize := 8192; //緩衝區大小設置爲8K
GetMem(Buf, BufSize); //申請內存,用於獲取工作組信息
//獲取計算機名稱
Res := WNetEnumResource(lphEnum, Count, Pointer(Buf), BufSize);
if Res = ERROR_NO_MORE_ITEMS then break; //資源列舉完畢
if (Res <> NO_ERROR) then Exit; //執行失敗
Temp := TNetResourceArray(Buf);
for Ind := 0 to Count - 1 do //列舉工作組的計算機名稱
begin
//獲取工作組的計算機名稱,+2表示刪除"//",如//Aaron=>Aaron
my_node_2 := treeview.Items.AddChild(my_node, Temp^.lpRemoteName + 2);
my_node_2.imageindex := 2;
Inc(Temp);
end;
end;
Res := WNetCloseEnum(lphEnum); //關閉一次列舉
if Res <> NO_ERROR then exit; //執行失敗
FreeMem(Buf);
screen.Cursor := crDefault;
statusbar.panels[0].text := '';
statusbar.refresh;
end;
//當樹型目錄被點擊時
procedure TfrmNet.TreeViewClick(Sender: TObject);
begin
if treeview.Selected.Level = 0 then
begin
if treeview.Selected.count = 0 then
//添加工作組名
GetGroupName;
end;
if treeview.selected.level = 1 then
begin
if treeview.Selected.count = 0 then
//添加計算機名
GetComputerName;
end;
if treeview.Selected.level = 2 then
btnOK.Enabled := true
else
btnOK.Enabled := false
end;
//確定按鈕,返回被選中的主機名
procedure TfrmNet.btnOKClick(Sender: TObject);
begin
aComputerName := treeview.Selected.Text;
close;
end;
procedure TfrmNet.btnCancelClick(Sender: TObject);
begin
close;
end;
end.