C / C++ / MFC

Re: Enable lan connection for win7 using INetConnection

24-Oct-10 21:26

Hi Richard

I must have forgotten to comment the

"result=true;"

statement. Thanks for pointing it out.

Well, the problem is the statement:

result = (pCon->Connect() == S_OK);

assigns true to the variable "result" in WinXP account with the privileges to enable/disable the LAN connection
but in case of WIN7 administrator account the value assigned to the variable "result" is false.

There must be some issue with pCon->Connect() function. But I'm not able to figure out why it is not working even in Administrator account in Win7

Thanks and regards,
Manoj

Richard MacCutchan24-Oct-10 22:33

Re: Enable lan connection for win7 using INetConnection

24-Oct-10 22:33

You should change your code to trap the return value of your Connect() call and then check for the value S_OK. If the reponse is any other value then you should have some indication of why it is failing. Try not to ignore unsuccessful Win32 responses, as you have no idea what is going wrong if you do.

Just say 'NO' to evaluated arguments for diadic functions! Ash

manojsaxena_mca24-Oct-10 23:18

Re: Enable lan connection for win7 using INetConnection

24-Oct-10 23:18

Hi Richard

I captured the return value of connect() in a local variable and it shows the following message in debug mode:

0x800702e4 the required operation requires elevation.

Can you tell me how to run a function, such as connect() here, in elevated mode ?
I know that an application or any type of file can be run as elevated using ShellExecuteEx(), but how to for a function ?

Thanks and regards,
Manoj

Richard MacCutchan25-Oct-10 0:26

Re: Enable lan connection for win7 using INetConnection

25-Oct-10 0:26

I don't know of any way to do it for a function; I suggest you just run your application with administrator privileges.

Just say 'NO' to evaluated arguments for diadic functions! Ash

manojsaxena_mca26-Oct-10 2:31

Re: Enable lan connection for win7 using INetConnection

26-Oct-10 2:31

Hi Richard,

Ok.
By the way, I am already running the application with administrator account so should it make any difference if I run the same application in the same administrator account with "Run as administrator" after right clicking on the application icon ?

Meanwhile, I will try googling for any possible solutions.

Thanks and regards,
Manoj.

Richard MacCutchan26-Oct-10 3:35

Re: Enable lan connection for win7 using INetConnection

26-Oct-10 3:35

I have come across similar issues myself; my user account is an administrator account but I still need to run some apps as Administrator in order for them to work. Try the right click and "Run as administrator" to see if that resolves the problem. You can also set the application always to run as administrator by changing its manifest properties. Select Properties for the project in Visual Studio, click on Linker -> Manifest File and select "UAC Execution Level". Change the value to whatever option gives administrator privileges and try running it as normal.

Just say 'NO' to evaluated arguments for diadic functions! Ash

manojsaxena_mca1-Nov-10 1:35

Re: Enable lan connection for win7 using INetConnection

1-Nov-10 1:35

Hi
Run as administrator works fine for administrator account but when I run the application (as administrator) in a guest account, the application seems to change the settings of administrator instead of the guest account and thereby defeating the purpose of the application.
Eg : If I have proxy enabled in Administrator account and running (as administrator) the application in guest account disables the proxy of the administrator.

The behavior seems quite logical since I am asking the application to run as administrator instead of guest and hence use the administrator environment.

So coming back to my very first mail, the problem in guest account is that CoCreateInstance returns E_ACCESSDENIED.

Is there some way to use the function to run with elevated privileges ?
Or is it that COM objects can not be used in a guest account (which I think should not be the case)?

Thanks
Manoj

Richard MacCutchan2-Nov-10 9:30

Re: Enable lan connection for win7 using INetConnection

2-Nov-10 9:30

manojsaxena_mca wrote:
Eg : If I have proxy enabled in Administrator account and running (as administrator) the application in guest account disables the proxy of the administrator.

Sorry, I'm lost here, as far as I know you can run any application with elevated privileges.

manojsaxena_mca wrote:
Is there some way to use the function to run with elevated privileges ?
Or is it that COM objects can not be used in a guest account (which I think should not be the case)?

I have not come across this but the elevated privilege should be carried across from the original app to the COM object. I cannot see that Windows could work otherwise.

Just say 'NO' to evaluated arguments for diadic functions! Ash

manojsaxena_mca2-Nov-10 22:27

Re: Enable lan connection for win7 using INetConnection

2-Nov-10 22:27

Hi Richard

Both of your comments in the previous reply are true, but what I could figure out: "running as administrator" my application in guest account runs the application using the environment (variables etc) of "administrator" account rather than that of the "guest" account. In other words, effectively the application runs as if it is running in administrator account instead of guest.
Hence application made any changes (disabling proxy, in my case) to administrator and not to guest.

Regards,
Manoj

Richard MacCutchan3-Nov-10 4:37

3-Nov-10 4:37

That is what I would expect to happen. It should be easy to check just by running a cmd shell as adminstrator and see what you get access to.

Just say 'NO' to evaluated arguments for diadic functions! Ash

ShellExecute

john563222-Oct-10 1:57

22-Oct-10 1:57

How to run a win32 .exe which takes 2 command line perameter with ShellExecute API ?

Nish Nishant22-Oct-10 2:05

Nish Nishant

22-Oct-10 2:05

Pass both parameters in a single string as the lpParameters argument.

Regards,
Nish

My technology blog: voidnish.wordpress.com

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Sauro Viti22-Oct-10 2:09

Sauro Viti

22-Oct-10 2:09

Look at the ShellExecute Function (Windows)[^] documentation on the MSDN: you have to use the lpParameters argument. Here below is an example:

C++

// The following lines spawns notepad.exe and pass it the parameters /P and myfile.txt
ShellExecute(NULL, "open", "notepad.exe", "/P myfile.txt", NULL, SW_SHOW);

john563222-Oct-10 2:30

22-Oct-10 2:30

This is not working..
I am passing like

CString cmdArg = _T("-x ") + szUpdateFilePath;
::ShellExecute(NULL, _T("open"), szUnZipExePath,cmdArg , NULL, SW_SHOW);

I need to pass like
unzip.exe -x file.zip

Anything wrong?

David Crow22-Oct-10 2:52

David Crow

22-Oct-10 2:52

john5632 wrote:
This is not working..

Which means what exactly?

Try using string literals as the third and fourth arguments to ShellExecute(). Once you get that going, then you can go back to using variables.

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Code-o-mat22-Oct-10 3:07

22-Oct-10 3:07

Are you sure szUpdateFilePath contains what you think it contains?

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Leela: Fry, you're wasting your life sitting in front of that TV. You need to get out and see the real world.
Fry: But this is HDTV. It's got better resolution than the real world <

john563222-Oct-10 3:12

22-Oct-10 3:12

yes

Code-o-mat22-Oct-10 3:20

22-Oct-10 3:20

Does szUpdateFilePath contain spaces perhaps? If yes, enclose it with quotation marks, e.g.:

Cstring cmdStr = _T("-x \"") + szUpdateFilePath + _T("\"");

Also, try this:

CString exec = szUnZipExePath + _T(" -x ") + szUpdateFilePath;
::ShellExecute(NULL, _T("open"), exec,NULL , NULL, SW_SHOW);

and see if it changes anything or not.

john563222-Oct-10 3:57

22-Oct-10 3:57

NO changes

Code-o-mat22-Oct-10 4:01

22-Oct-10 4:01

Actually, why does it not work? What are the sympthoms i mean.

john563222-Oct-10 4:03

22-Oct-10 4:03

It should unzip the file and create 2 folder and contents. When I am running using command prompmt the same is working fine. but it is not working in code.

Code-o-mat22-Oct-10 4:11

22-Oct-10 4:11

If you check out the documentation for ShellExecute[^], it states that you get error codes -if any- in the returned value, what does the error code tell you?

john563222-Oct-10 5:46

Re: ShellExecute [modified]

22-Oct-10 5:46

Its returning 0(The operating system is out of memory or resources.). Can you tell me why this is happening. plzz.

Code-o-mat22-Oct-10 7:42

22-Oct-10 7:42

Which version? Your original or the one i suggested? Try your version if you haven't.

Btw i did a small test app and it runs unzip.exe without problems, i suspect that the problem is with your parameters, maybe the path to your executable is too long or the parameter string is. If you don't specify any arguments, just try to run the exe, does it work?

modified on Friday, October 22, 2010 2:07 PM