Dynamically allocating an Array of type LOCALGROUP_MEMBERS_INFO_3

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2 total messages Started by Maurice Anderson Wed, 21 Jun 2006 05:10

#3412

Author: Maurice Anderson
Date: Wed, 21 Jun 2006 05:10

19 lines
1528 bytes

Hello, as you can see a I am adding two users to local group Test.  I have 
"info" defined as a array with two elements of type 
LOCALGROUP_MEMBERS_INFO_3.

I want to somehow allocate the number of elements dynamically depending on 
the amount of users I want to add to the group.

void __fastcall TMDIChild::Test1Click(TObject *Sender)
{
 int a = 0; LOCALGROUP_MEMBERS_INFO_3 info[2];

 info[0].lgrmi3_domainandname = L"Administrator";
 info[1].lgrmi3_domainandname = L"guest";

 Memo1->Lines->Add(String(NetLocalGroupAddMembers(NULL, L"Test", 3, 
(LPBYTE)&info2, 2)));
}

How could I do that?

Re: Dynamically allocating an Array of type LOCALGROUP_MEMBERS_INFO_3

#3413

Author: Remy Lebeau (TeamB)
Date: Wed, 21 Jun 2006 06:38

54 lines
2497 bytes

"Maurice Anderson" <mauriceanderson@hotmail.com> wrote in message
news:4498d4d4@newsgroups.borland.com...

> Hello, as you can see a I am adding two users to local group Test.
> I have "info" defined as a array with two elements of type
> LOCALGROUP_MEMBERS_INFO_3.
>
> I want to somehow allocate the number of elements dynamically
> depending on the amount of users I want to add to the group.

Use the 'new[]' operator, ie:

    void __fastcall TMDIChild::Test1Click(TObject *Sender)
    {
        WideString members[] = {L"Administrator", L"guest"};
        AddGroupMembers("Test", members, 2);
    }

    void __fastcall TMDIChild::AddGroupMembers(const WideString &Group,
WideString *Members, int Count)
    {
        LOCALGROUP_MEMBERS_INFO_3 *info = new
LOCALGROUP_MEMBERS_INFO_3[Count];

        for(int i = 0; i < Count; ++i)
            info[i].lgrmi3_domainandname = Members[i];

        NetLocalGroupAddMembers(NULL, Group, 3, (LPBYTE)info, Count);
        delete[] info;
    }

Alternatively, the Win32 API approach is to use LocalAlloc() or
GlobalAlloc(), ie:

    void __fastcall TMDIChild::AddGroupMembers(const WideString &Group,
WideString *Members, int Count)
    {
        LOCALGROUP_MEMBERS_INFO_3 *info = (LOCALGROUP_MEMBERS_INFO_3*)
LocalAlloc(LMEM_FIXED, sizeof(LOCALGROUP_MEMBERS_INFO_3) * Count);

        if( info )
        {
            for(int i = 0; i < Count; ++i)
                info[i].lgrmi3_domainandname = Members[i];

            NetLocalGroupAddMembers(NULL, Group, 3, (LPBYTE)info, Count);

            LocalFree(info);
        }
    }


Gambit

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