C / C++ / MFC

Can't open listening socket on Win2k3 Server

10-Sep-04 3:15

hemanth_phk wrote:
size of the variables present in the file...

Files don't have variables. Confused | :confused:

A variable is something in your code that can contain the contents of the file, however.

hemanth_phk wrote:
...is way greater than the stack size.

Are you trying to read the file into a stack-based variable?

hemanth_phk wrote:
Is there any way to solve such problems?

Use memory from the heap instead.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Jon Betzold9-Sep-04 11:52

Jon Betzold

9-Sep-04 11:52

I can't seem to open a listening socket on Windows Server 2003. The very same code has run on NT4 and Win2k for years. But when I try to run it on Win2k3, it fails to create a listening socket. The code is a C++ wrapper for the Windows Socket API (MFC Socket classes are mostly useless). I don't believe there is anything unusual about the way the code was implemented. It has never given us any trouble in the past.

I guess my question is this: Is there something more that I must know/do in order to run a socket server (i.e. listening socket) on Win2k3. Is this part of MS's Secure Computing Initiative. Or am I just overlooking the obvious? Any help would be greatly appreciated.

Thanks,

Jon

Figured it out

Jon Betzold9-Sep-04 12:57

Jon Betzold

9-Sep-04 12:57

Win2k3 requires a listening socket to be bound to a specific IP, whereas Win2k and NT4 do not. We were not binding to a specific IP. One small change, and the code works on all 3 operating systems.

Jon

Error - windows.h already included

skg7479-Sep-04 11:49

skg747

9-Sep-04 11:49

Hi,

We're getting the following error and we cannot figure out how to get rid of it. It is happening on only one person's pc and not others. The application(s) that he is compiling are simple MFC apps or even non-MFC apps. There is no use of ATL or COM. If anyone has any clues, please let us know. Thanks.

Regards,
Sanjeev

"fatal error C1189: #error : WINDOWS.H already included. MFC apps must not #include <windows.h>".

Arsalan Malik9-Sep-04 19:32

Arsalan Malik

9-Sep-04 19:32

If you include any MFC header files after windows.h, then this error occures. For example:

#include "windows.h"
#include "afx.h"

The above code will cause C1189 error, but the following will not:

#include "afx.h"
#include "windows.h"

So, to avoid this error, make sure that you include windows.h at the end of all the includes. Cool | :cool:

Arsalan Malik

David Crow10-Sep-04 3:17

10-Sep-04 3:17

Arsalan Malik wrote:
#include "afx.h"
#include "windows.h"

So, to avoid this error, make sure that you include windows.h at the end of all the includes.

When using MFC, there's no reason to include windows.h as it has already been included.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

skg74710-Sep-04 6:07

skg747

10-Sep-04 6:07

Hi Folks,

Thanks for the tips but...

Please note that the compile error occurs on only one person's pc. If the project is compiled on someone else's pc, then there is no error.

Also, note that even on this one pc, the error only started occurring about a week ago. Previously, there was no such error. Nothing has been changed in the code.

It seems to me that maybe the wrong version of some file (probably .H) is being picked up from somewhere. I checked in the Tools - Options - Directories - Include files and it looks fine. This person has already uninstalled and re-installed Visual Studio without any success.

I'm hoping to find a solution for him before he goes re-formatting his drive Smile | :)

.

Any other ideas? Please let me know. Thanks!!

-Sanjeev

David Crow10-Sep-04 7:59

10-Sep-04 7:59

skg747 wrote:
I checked in the Tools - Options - Directories - Include files and it looks fine.

What about the INCLUDE environment variable?

It's a long shot, but have you looked through the code for any #error directives?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Exception "The parameter is incorrect." on CArchive

skg74710-Sep-04 10:12

skg747

10-Sep-04 10:12

This is the only #error directive I see (in VC98\MFC\Include\afxv_w32.h):

#ifdef _WINDOWS_
#error WINDOWS.H already included. MFC apps must not #include <windows.h>
#endif

Ed K9-Sep-04 11:24

Ed K

9-Sep-04 11:24

I'm trying to save a file to a server and getting a "The parameter is incorrect." exception.

<code>
CFile file;
CFileException ex;
if( file.Open(path, CFile::modeWrite | CFile::shareExclusive | CFile::modeCreate, &ex) )
{
	try
	{
		CArchive ar(&file, CArchive::store);
		ploan->Serialize(ar);

		ar.Close();
		file.Close();
	
	}
	catch(CFileException* pEx)
	{
		// not caught here
	}
	catch(CArchiveException* pEx)
	{
		// not caught here
	}
	catch(CException* pEx)
	{
		// "The parameter is incorrect." caught here
	}
}
</code>

It creates a zero length file and fails. Any ideas??

Thanks!

ed

Re: Exception "The parameter is incorrect." on CArchive

David Crow10-Sep-04 3:27

Re: Exception "The parameter is incorrect." on CArchive

10-Sep-04 3:27

Does it happen if path points to some local (as opposed to a server) folder? Have you stepped into the CArchive constructor or the Serialize() method to see where the exception gets thrown? While the other two Close() methods can also throw an exception, I would rule them out for the time being.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Ed K10-Sep-04 6:04

Ed K

10-Sep-04 6:04

Thanks!!!

This doesn't happen on the local drive. Only on network drives. And it doesn't happen to everyone either. I have 3 clients out of 1000+ that have this issue.

ed

Re: Exception "The parameter is incorrect." on CArchive

David Crow10-Sep-04 7:52

Re: Exception "The parameter is incorrect." on CArchive

10-Sep-04 7:52

I'm leaning towards a permission-related issue. To verify, dummy up a little program that does nothing but create and write to a file on the network. Does that uncover anything?

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Ed K4-Oct-04 15:49

Ed K

4-Oct-04 15:49

Took a while but wrote a little app for them. There are 3 locations this happens at so far. The test app had the same result. It wasn't an CFile or CArchive exception rather it was caught in the CException catch block.

They all have the problem when they write to the server. When they change the path so that it writes to their C:\ drive there isn't a problem.

Thanks for the bandwidth!

ed

The absence of evidence is not evidence of absence.

Owner Draw List Box Scrolling Problem - ?XP bug

Michael Gunlock9-Sep-04 11:05

Michael Gunlock

9-Sep-04 11:05

I have noticed a "visual scrolling" problem with owner-draw list boxes (both mine and others) in XP. This occurs with both stand-alone list boxes and ones associated with a combo box. The problem occurs if the My Computer | Properties | Performance Options | Visual Effects | Smooth-scroll List Box option is checked. The animated scrolling generated by windows is okay unless you click on the scroll bar to generate page-up/page-down messages. With this, the scrolling animation visually appears to be going in the opposite direction as expected...but when the animation terminates, the appropriate update has occurred (e.g. the expected items are visual). This is quite obvious when the list box size is large enough and the items are different in appearance. This does not appear to occur with non owner-draw list boxes.

I cannot find any reference to this bug but it is clearly reproducible. Is anyone aware of a fix?

Sorting Recordset

Ouenstreet9-Sep-04 10:49

9-Sep-04 10:49

Can someone help me. I have two recordsets that are opened (ADO)
AdRecordSet and AdTimesRecordSet.

The data is then combined by the field AdID into a class / recordset SiteAdInfoSet (the instance is called CAddInfoSet)

I would like to sort CSiteAdInfoSet by m_NrPlays (int) in descending order (field came from AdTimesRecordSet.. I want to re-store the data back into CsiteAdInfoSet as to keep changes to a minimum.

I hope this is clear
Thanks.

TomH

David Crow9-Sep-04 10:57

9-Sep-04 10:57

Does the recordset have an SQL query (e.g., SELECT <field> FROM WHERE ...) associated with it? If so, just add ORDER BY to it.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Ouenstreet10-Sep-04 4:05

10-Sep-04 4:05

No is does not have an SQL query.

TomH

Ouenstreet10-Sep-04 10:55

10-Sep-04 10:55

Any help out there???
Thanks
TomH

TomH

Ouenstreet13-Sep-04 9:56