C / C++ / MFC

Moonis Ahmed3-Jun-07 15:30

Moonis Ahmed

3-Jun-07 15:30

Hi,
I did the above settings to enable the macro but the problem still persists. Sigh | :sigh:

My modified code is here:

#define _WIN32_WINNT 0x0500
#include "windows.h"
#include "stdio.h"
#include "iostream.h"
#include "tchar.h"

int main()
{
	LPTSTR lpszSystemInfo;// pointer to system information string

	DWORD cchBuff=sizeof(lpszSystemInfo);// size of domain name

	// Get domain.
	if (GetComputerNameEx(ComputerNameDnsDomain, lpszSystemInfo, &cchBuff))
	cout<<"Domain Name is : "<<cchBuff<<endl;

	// Get user name.

    char acUserName[100];
    DWORD nUserName = sizeof(acUserName);
    if (GetUserName(acUserName, &nUserName)) {
        cout << "User name is " << acUserName << "." << endl;
    }
    else {
        cerr << "Failed to lookup user name, error code " <<
                GetLastError() << "." << endl;
    }

	return 0;
}

I am new to VC++ programming so please point out any other errors if there are.

Moonis

Naveen6-Jun-07 20:26

Naveen

6-Jun-07 20:26

Which version of platform SDK are you using?If not download the latest platform SDK from the microsoft site.

nave

[OpenedFileFinder]

Moonis Ahmed6-Jun-07 20:31

Moonis Ahmed

6-Jun-07 20:31

Hi,

I am using MS Visual C++ 6.0 running on Windows 2000 Server.
Is the problem related to the above version that i am running?

Moonis

Naveen6-Jun-07 21:37

Naveen

6-Jun-07 21:37

declaration of this file dosent come with the vc 6. You neeed to download the latest platform SDK

nave

[OpenedFileFinder]

Naveen31-May-07 23:56

Naveen

31-May-07 23:56

You have to define the _WIN32_WINNT version to 0x0500 or greater. for this Take

project settings->c++->Preprocessor definition.

In that edit box add _WIN32_WINNT=0x0500

nave

[OpenedFileFinder]

Re: dll for loading bitmap

Rajkumar R31-May-07 23:59

Rajkumar R

31-May-07 23:59

Hi,
In the msdn documentation for GetComputerNameEx it is given
"To compile an application that uses this function, define the _WIN32_WINNT macro as 0x0500 or later"
have to confirmed it and it required to include windows.h

dll for loading bitmap

jannathali31-May-07 23:29

jannathali

31-May-07 23:29

hai,
i want to create a dll that loads bitmap.i am a beginner to a dll.anyone please help me. i read http://www.codeproject.com/vbscript/LoadBMPFromDLL.asp".
but they are not giving the vc++ code part .Any please give any basic idea

Mark Salsbery1-Jun-07 5:56

Mark Salsbery

1-Jun-07 5:56

What's giving you trouble - loading a bitmap or creating a DLL?

Loading a bitmap is the same in a DLL as in an EXE.

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Re: dll for loading bitmap

Hamid_RT1-Jun-07 6:27

Hamid_RT

1-Jun-07 6:27

But why you want to load bitmaps of a dll?

WhiteSky

Memory sharing

anilkrupakar31-May-07 23:22

anilkrupakar

31-May-07 23:22

I am running five instances of an exe simultaneously. will there be any memory sharing or memory over writings. Suppose i have a strcuture in the code . when i am running five instances will the memory allocated for that structure will be different for each instance? i am not not using "new" operator. i am just taking an object for the structure.
ex:
struct sample{
CString name;
};
sample s;

Anil Jillella

Re: Memory sharing

CPallini31-May-07 23:26

CPallini

31-May-07 23:26

anilkrupakar wrote:
I am running five instances of an exe simultaneously. will there be any memory sharing or memory over writings.

No.

anilkrupakar wrote:
Suppose i have a strcuture i the code . when i am running five instances will memory allocated for that structure will be different?

Yes.

You have to explicitely handle shared memory if you need it.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

How to authorize a dll loading.

BusaBird31-May-07 23:09

BusaBird

31-May-07 23:09

Hi all,

Is there a way to allow only a specified program to load a dll.

For example: There is a dll called "test.dll" and I don't want other programs loading it except "test.exe". Is there a way to check the caller in dll main function and denide access if the caller is not authorized.

thanks.
Arun

Re: How to authorize a dll loading. [modified]

Jeffrey Walton1-Jun-07 7:27

Jeffrey Walton

1-Jun-07 7:27

Hi Toxcct,

toxcct wrote:
that's stupid...

You're not playing well with others in the sandbox...

I've received the same sort of answers before (from PhD's no less). It made no sense because there was no context of the problem domain. What do you know of the OP's problem domain or project requirements? I did not see it in the original post.

Perhaps the OP has developed an RSA Integer Factorization algorithm he wants to use in his work only: the first being his RSA modulous generation program (to test that n = p * q ), and a second to factor other's moduli. In this case he may not want to share the functionality - for example, the NSA[^] has threatened him with bodily harm.

Finally, what if the DLL is actually a resource of custom graphics or messages...

Jeff

Rajkumar R1-Jun-07 0:12

Rajkumar R

1-Jun-07 0:12

Hi,
I am not sure whether we can deny access to dll using system control.
But you can do that in your way.

For instance if your dll export a function
CYourDllClass *CreateInstance();
and the object it returns is needed for further processing.

you can do this

CYourDllClass *CreateInstance(yourSecurityKey)
{
if (Authorised(yourSecurityKey))
{
return new CYourDllClass();
}
else
{
return NULL;
}
}

Best Regards

-- modified at 6:42 Friday 1st June, 2007

Jeffrey Walton1-Jun-07 7:47

Jeffrey Walton

1-Jun-07 7:47

Hi BusaBird,

I'm not sure if you can exit at load (other than return an error from DllMain), but the following may help:

How to let a DLL know which application uses it[^]

Jeff

BusaBird5-Jun-07 2:21

BusaBird

5-Jun-07 2:21

Thanks for your reply.

Jeffrey Walton5-Jun-07 2:26

Jeffrey Walton

5-Jun-07 2:26

No problem BusaBird. Apparently, others did not think so highly of the response - I received two 1.0's. Ouch!

Perhaps one of the poster's who I criticized for the content of their message has taken revenge. Oh well.

Jeff

error C2061: Please Help

Programm3r31-May-07 22:47

31-May-07 22:47

Hi all,

For some or other strange reason when I compile my project I receive the following error:

Error 1 error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES' c:\program files\microsoft visual studio 8\vc\platformsdk\include\winuser.h 1317

winuser.h Confused | :confused:

Can anyone please assists me.
Many Thanks.
Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

toxcct31-May-07 22:56

toxcct

31-May-07 22:56

do you have any other error before this one ?
moreover, what compiler do you use exactly ?

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Programm3r31-May-07 23:02

31-May-07 23:02

No, none, only these (all from winuser.h):

Error	1	error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES'
Error	2	error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES'
Error	9	error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES'
Error	10	error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES'
Error	12	error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES'
Error	13	error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES'
Error	14	error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES'
Error	15	error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES'
Error	21	error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES'
Error	22	error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES'
Error	23	error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES'
Error	24	error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES'
Error	26	error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES'
Error	27	error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES'

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

toxcct31-May-07 23:05

toxcct

31-May-07 23:05

then, as CPallini suggested, haven't youremoved a #include <windows.h> directive in your stdafx.h header ?

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Programm3r31-May-07 23:12

31-May-07 23:12

O.K, so I have created a test win32 console application.

#include "stdafx.h" // NO '#include' here...
#include <conio.h>
#include <windows.h>
#include <winbase.h>
#include <winuser.h>

int _tmain(int argc, _TCHAR* argv[])
{
	printf("Just testing!!!\n");
	_getch();
	return 0;
}

But still

:
Error 1 error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES' ..\winuser.h
Error 2 error C2061: syntax error : identifier 'LPSECURITY_ATTRIBUTES' ..\winuser.h

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

CPallini31-May-07 23:24

CPallini

31-May-07 23:24

Your test code compiles fine on my system (VS 2003).
Have you involuntarily modified any standard header file?
Confused | :confused:

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Programm3r31-May-07 23:29