C / C++ / MFC Discussion Boards

Re: How to check if a user is in a specific group

Brian Shifrin18-Mar-03 6:13

Brian Shifrin

18-Mar-03 6:13

NetUserGetLocalGroups
NetUserGetGroups

Re: How to check if a user is in a specific group

Bluescreen200323-Mar-03 23:13

Bluescreen2003

23-Mar-03 23:13

Thank you, that looks good. First I have to find the current user by NetWkstUserGetInfo and then find the groups by NetUserGetGroups.

But now I have a stupid problem using Unicode strings (sorry, I never programmed in Windows before): How can I convert a String literal to Unicode. And how can I display an Unicode string in a console application. Would be great if someone could hack together a short demonstration source for that NetUserGetGroups function with all that Unicode conversions.

Sorry if this question seems stupid. For now I only know C (not C++) under DOS.

LNK4084 - Simply unbelievable ;)

[CoY0te]18-Mar-03 2:13

[CoY0te]

18-Mar-03 2:13

Houston, I have a problem.
I'm working on an application recently and I have made some really little changes in the code. Now it's not working anymore. I was trying almost everything.
Environment: Visual C++ 6.0 + service pack
Output message: warning LNK4084: total image size 277245952 exceeds max (268435456); image may not run
MSDN says: The application exceeds the limit of 256 megabytes.
In fact the application has only 143 kilobytes and uses some DLL's giving totally 556KB.
Does anyone met such a problem?

Greetings and thanks in advance.

[ CoY0te ]
Railgun is like a Gilette Mach 3 - it does the job with one, easy stroke.

Re: LNK4084 - Simply unbelievable ;)

Joaquín M López Muñoz18-Mar-03 2:21

Joaquín M López Muñoz

18-Mar-03 2:21

Are you statically declaring some huge array, something like:

char buffer[SOME_HUGE_NUMBER];

If not, a search on google hints at your temp directory being full, try cleaning it up.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: LNK4084 - Simply unbelievable ;)

[CoY0te]18-Mar-03 2:33

[CoY0te]

18-Mar-03 2:33

I have a few static arrays used for temporary implementations, but total size of these arrays would be about 2-3MB, and I haven't added any recently (in fact I removed one).
I think this is not it. Perhaps some VC++ bug. There are some (a "stepped" into some of them myself).

Thanks anyway.
Cheers.

[ CoY0te ]
Railgun is like a Gilette Mach 3 - it does the job with one, easy stroke.

Re: LNK4084 - Simply unbelievable ;)

AlexO18-Mar-03 2:35

AlexO

18-Mar-03 2:35

[CoY0te] wrote:
really little changes in the code

what are those?(you had to do something to exceed 264 Mb)

Re: LNK4084 - Simply unbelievable ;)

[CoY0te]18-Mar-03 3:09

[CoY0te]

18-Mar-03 3:09

Nothing that should have anything to do with the image size. I can't really tell when this warning message occured for the first time. Right now the application is working again but I still get this message. I did some changes in code, and then i've reconstructed one loop. Finally the code is almost the same as it was but somehow it works.
At one moment it was just just a matter of 4 calls to glVertex (OpenGL;) between glBegin(GL_QUADS) and glEnd().
These calls used no arrays - they used immediate arguments, but adding them caused the crash - unbeleivable.
I'm really getting sure it was it is a compiler or linker bug or something.
I have solved the problem (temporally) but still heven't found the real reason.
Thanks for your help.

[ CoY0te ]
Railgun is like a Gilette Mach 3 - it does the job with one, easy stroke.

OnInitDialog and 'return TRUE'

ns18-Mar-03 2:06

18-Mar-03 2:06

It says return TRUe unless you set focus to a control. I imagine that if I have:

OnInitDialog()
{

   FunctionThatsetsFocus();

<code>   return FALSE;</code> ??
}

I should return False = correct? Since even if I'm not setting focus in OnInitDialog, a Function I call in it, does...

Appreciate your help,
ns

Re: OnInitDialog and 'return TRUE'

Scott H. Settlemier18-Mar-03 2:10

Scott H. Settlemier

18-Mar-03 2:10

yep

Logoff User

Anders Molin18-Mar-03 1:44

Anders Molin

18-Mar-03 1:44

Is there any way to log off a user?

I need to log off the current user, so the system shows the logonscreen.
I'm working on Win2k/XP.

Just a hint would be great, as I can't find any way to do it... Blush | :O

- Anders

Money talks, but all mine ever says is "Goodbye!"

Re: Logoff User

Scott H. Settlemier18-Mar-03 1:58

Scott H. Settlemier

18-Mar-03 1:58

ExitWindowsEx(EWX_LOGOFF,0);

Re: Logoff User

Scott H. Settlemier18-Mar-03 2:07

Scott H. Settlemier

18-Mar-03 2:07

Oh yeah. On NT, make sure to enable the SE_SHUTDOWN_NAME privilege 1st.

e.g.

HANDLE hToken;
VERIFY(::OpenProcessToken(::GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES|TOKEN_QUERY,&hToken));
TOKEN_PRIVILEGES tkp;
VERIFY(::LookupPrivilegeValue(NULL,SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid));
tkp.PrivilegeCount=1;
tkp.Privileges[0].Attributes=SE_PRIVILEGE_ENABLED;
VERIFY(::AdjustTokenPrivileges(hToken,FALSE,&tkp,0,0,0));

Re: Logoff User

Anders Molin18-Mar-03 2:15

Anders Molin

18-Mar-03 2:15

Thanks a lot Smile | :)

- Anders

Money talks, but all mine ever says is "Goodbye!"

Re: Logoff User

User 665818-Mar-03 1:59

User 6658

18-Mar-03 1:59

Try this:
ExitWindowsEx(EWX_LOGOFF, 0);

regards

modified 12-Sep-18 21:01pm.

Re: Logoff User

Anders Molin18-Mar-03 2:16

Anders Molin

18-Mar-03 2:16

Thanks

- Anders

Money talks, but all mine ever says is "Goodbye!"

SetTimer() is synchronized?

Moak18-Mar-03 1:25

Moak

18-Mar-03 1:25

Hi,
I like to use ::SetTimer() with a callback function, rather than having a CWnd::OnTimer() handler. Is it still synchronized with my other window message handlers... all in one thread context etc, no overlapping calls?

I use ::SetTimer() in a class not derived from CWnd, that's why I ask. Hmm, I think it is synchronized, so I don't need to use mutex or a critical section. But I want to go sure!

MSDN says: "When you specify a TimerProc callback function, the default window procedure calls the callback function when it processes WM_TIMER". Since my class with the timer is not derived from CWnd, how does the timer callback work?

Thanks, Moak

Re: SetTimer() is synchronized?

Scott H. Settlemier18-Mar-03 1:43

Scott H. Settlemier

18-Mar-03 1:43

It also says that "the default window procedure calls the callback function when it processes WM_TIMER. Therefore, you need to dispatch messages in the calling thread, even when you use TimerProc instead of processing WM_TIMER."

So the timer callback is called as part of the work of the default window procedure. Hence you must have a/be processing your message queue (no console apps) and it is synchronous.

Re: SetTimer() is synchronized?

Moak18-Mar-03 1:56

Moak

18-Mar-03 1:56

Thanks Scott!

I also found this timer arcticle[^] describing: "After the timer is created, it sends WM_TIMER messages to the window message queue, or if no window was specified, to the application queue."

So... as long as I have a message pump, I should be lucky. Good news Smile | :)

How to create a phonebook entry?

Jump_Around18-Mar-03 1:12

Jump_Around

18-Mar-03 1:12

Is anyone who knows how to create a phonebook entry (win98) without calling DialogBox (wizzard).

Please help Confused | :confused:

Re: How to create a phonebook entry?

valikac18-Mar-03 8:57

valikac

18-Mar-03 8:57

One solution is CFormView.

Kuphryn

SafeArrayCreateVector(), how should I destroy it?

Joan M18-Mar-03 1:09

Joan M

18-Mar-03 1:09

When I use SafeArrayCreateVector(...) in order to create a safe array, should I free it using SafeArrayDestroy(...)?

Thank you in advance.

Memory functions? I'd like to know how much free memory remains...

Joan M18-Mar-03 1:03

Joan M

18-Mar-03 1:03

Hello,

I'd like to know where to find memory functions (in order to know free memory in the OS, memory occupied by my app...).

I've searched the MSDN but imagine the results when I've written down "MEMORY"...

Thank you in advance.

Re: Memory functions? I'd like to know how much free memory remains...

Ravi Bhavnani18-Mar-03 2:23

Ravi Bhavnani

18-Mar-03 2:23

GlobalMemoryStatus() or GlobalMemoryStatusEx() on Win2K+.

/ravi

Let's put "civil" back in "civilization"
http://www.ravib.com
ravib@ravib.com

Re: Memory functions? I'd like to know how much free memory remains...

Joan M18-Mar-03 2:58

Joan M

18-Mar-03 2:58

Thank you.

VC++ project/workspace question

7stud18-Mar-03 0:15

7stud

18-Mar-03 0:15

Hi,

I added a .h file and a .cpp file to my project to contain one function I needed. Somewhere along the line, I decided I needed it to be a class function instead, so I moved the declaration to the class header file and defined it in the class source file. Then I tried to delete the .h file and .cpp file with the delete key, and that seemed to work. However, the next time I built the code, a new folder showed up in the File View called External Dependencies, and it contained the .h file I deleted.

How do I get rid of that file, or just get everything back to how it was before I tried to do the deleting?

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