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netsharecheck

Posted on 2001-07-15
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Last Modified: 2012-05-04
can somebody please help me to use the "netsharecheck" function?  What sort of values should I insert at the (LPTSTR) device value?

The little program I'm trying to write, is a program that displays to you which directories and devices are shared on your computer (and some other network-related functions).  I think the "netsharecheck" function is the one to use for this situation.

An example would be appreciated
Thanks for *any* help
Lmoen
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Question by:Lmoen
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Expert Comment

by:darkloser
ID: 6284127
listen...
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Accepted Solution

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gemarti earned 450 total points
ID: 6284390
If you want to only look at the local computer then you enter NULL for LPTSTR

If you have a server application you will put in code like this:

\\servername  or just  servername

LPTSTR Device - When you share a resource you usually will give it a name like BLDG2P1 is a printer on \\servername
(\\servername\BLDG2P1) the BLDG2P1 is the device name.
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Expert Comment

by:Madshi
ID: 6284778
Hi Lmoen,

as far as I understand, NetShareCheck is only for checking whether a specific device is shared. You can't use this for directories etc.
Furthermore you should know that the network APIs are *completely* different in winNT and win9x based systems. The names are sometimes the sames, but the parameters differ always.

If you want to have it the easy way (and if you have at least Delphi 4), you might want to try my package "madSecurity" (free for non-commercial use):

http://help.madshi.net/Data/madSecurity.htm
http://help.madshi.net/Data/Shares.htm

This package does what you need (at least if I understood your needs correctly) and works fine in both NT and 9x.

Regards, Madshi.
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Expert Comment

by:gemarti
ID: 6285395
BTW: If you want to locate shares on a remote machine look at

\\machinename\HKEY_LOCAL_MACHINE\Security\ACCESS

Get a list of sub keys with RegEnumKey().

To do this RemoteAdmins must be installed on the remote machine and you must be part of the authorized group who can access the machine.

You can use the same method for your local machine if that is all you are interested in.
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Expert Comment

by:vladh
ID: 6287039
listening....
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Author Comment

by:Lmoen
ID: 6287378
please check my usage, I still can't get it to work, and I don't know what value the LPDWORD variable should be...?

The help file says the following, but I don't know how to get the adress, and i.e implement this =>
(Pointer to an address that contains the type of device share. On return the address pointed to by the type parameter contains the type of share the device is offered with. This parameter is set only if the function returned successfully.)

var
 temp : LPDWORD;
begin
 temp := ???????
 NetShareCheck(NULL, 'Canon Bubble-Jet BJC-600', temp);
end;

(Canon is the printer I have)

Thanks for the help, again
Lmoen
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Expert Comment

by:gemarti
ID: 6288060
Documentation indicates that netsharecheck is obsolete. It is a ported LAN Manager Function.....

Here is some code you can try:


unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, toolwin;

type
  TForm1 = class(TForm)
    ListBox1: TListBox;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
var
 dwResult,dwResultEnum : DWORD;
 lpnr : PNetResourceA;
 cbBuffer : DWORD;
 cEntries : DWord;
 ListRes : String;
 nr : PNETRESOURCEA;
 hEnum, lpcCount: Cardinal;
 lpBuff: longInt;
 s : String;
 p, CCount : LongInt;
 i:  integer;
begin
  //lpcCount := 0xFFFFFFFF;
  cbBuffer := 16384;
  CCount := $FFFFFFFF;
  nr.dwUsage := RESOURCEUSAGE_CONTAINER;
  nr.lpRemoteName := 0;
  dwResult := WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_ANY,0,nr,hEnum);
  //

  if dwResult = NO_ERROR then
    begin
      lpBuff := GLOBALALLOC(GPTR,cbBuffer);
      dwResultEnum := WNetEnumResource(hEnum, cEntries, nr, cbBuffer);
      p := p + length(nr.lpRemotename);
      SetLength(s,p);
      s := PChar(nr.lpRemoteName);
      ListBox1.Items.Add(IntToStr(p));
    end;

end;


end.


Good Luck.
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Expert Comment

by:gemarti
ID: 6288065
oops...

ListBox1.Items.Add(s);
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