C / C++ / MFC Discussion Boards

Re: ODBC - Microsoft SQL server

Wizard_0123-Apr-02 8:10

Wizard_01

23-Apr-02 8:10

Thanks. Support the class transaction ?

Wiizi Smile | :)

Re: ODBC - Microsoft SQL server

Carlos Antollini23-Apr-02 8:13

Carlos Antollini

23-Apr-02 8:13

What do you call Transaction, Stored Procedures?...;)

Regards

Carlos Antollini.
Sonork ID 100.10529 cantollini

Re: ODBC - Microsoft SQL server

Wizard_0123-Apr-02 8:17

Wizard_01

23-Apr-02 8:17

Update datas in database on server

Wiizi Smile | :)

Re: ODBC - Microsoft SQL server

Carlos Antollini23-Apr-02 8:28

Carlos Antollini

23-Apr-02 8:28

Yes, you can do that...

Best Regards

Carlos Antollini.
Sonork ID 100.10529 cantollini

Class static variables initalization problem during program run

23-Apr-02 4:57

we have been interrupted by the class private/public/protected static variables not getting initialized before control reaches main, when those variables initialization has been placed in the other dependent libraries instead of the current project.

It seem to us that, placing all the initialization statements in some header file say 'myheader.h' and adding this header to the main project, is better solution at the moment.

But, this activity is consuming large amount of time.
Can anyone inform us if we can initialize the class static variables in the other dependent libraries using other better way?

We know the following.
1) All global data including global static variables must be initialized before control reaches main function.
2) All local static variables will be initialized when the control calls the respective function for the first time.

What about class static variable? They have class scope. But they have program life time. Therefore, we guess our program is not proceeding further just because the class static variables in other dependent libraries are not getting initialized?
Is our assuption correct?
Any help in this regard would be highly appreciated.

Thanks in advance,
-Sarma

Re: Class static variables initalization problem during program run

Joaquín M López Muñoz23-Apr-02 5:50

Joaquín M López Muñoz

23-Apr-02 5:50

Static class data behave as global data in this respect. So, when the control hits main, these data must have been initialized. Possible reasons for the observed fiasco:

These static data are placed in a static library but the corresponding compilation unit is stripped out by the linker (because no symbol from that unit is explicitly linked from the program.)
The data depends on initialization on other static data in a different .cpp. As C++ does not guarantee any special order in the initialization of static data in each compilation unit, it could be that the dependent static data get initialized before the depended on data, thus resulting in strange results.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Class static variables initalization problem during program run

23-Apr-02 6:51

Hello Friend,

In our case we have several static libs which are dependent on .exe. while running the .exe we want all the class static variables in the static libraries initialized before control reaches main. In Linux C++ compiler it is properly happening? How to make it happen in windows2000.

Any reply would be grateful.

Thanks,
-Sarma

Re: Class static variables initalization problem during program run

Joaquín M López Muñoz23-Apr-02 8:52

Joaquín M López Muñoz

23-Apr-02 8:52

Well, I'm afraid little more can be said with that information alone. As I said before, first you'd have to determine the cause of the problem (lib stripped out, interdependcy among static data initialization across several .cpps, other.) If you could tell us something about the structure of your project or post some of the code of the offending library, that'd help a lot.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Class static variables initalization problem during program run

Tim Smith23-Apr-02 9:05

Tim Smith

23-Apr-02 9:05

Link your program with a map file option. Then search to see if the .CPP file that contains the initialial values is included in the image.

Tim Smith

I know what you're thinking punk, you're thinking did he spell check this document? Well, to tell you the truth I kinda forgot myself in all this excitement. But being this here's CodeProject, the most powerful forums in the world and would blow your head clean off, you've got to ask yourself one question, Do I feel lucky? Well do ya punk?

Re: Class static variables initalization problem during program run

Joaquín M López Muñoz23-Apr-02 9:19

Joaquín M López Muñoz

23-Apr-02 9:19

Hey, that's a powerful tool! Didn't know about it. How does one examine the image after building with this option?

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Class static variables initalization problem during program run

Tim Smith23-Apr-02 10:12

Tim Smith

23-Apr-02 10:12

Just look for a .MAP file in your build directory.

Tim Smith

I know what you're thinking punk, you're thinking did he spell check this document? Well, to tell you the truth I kinda forgot myself in all this excitement. But being this here's CodeProject, the most powerful forums in the world and would blow your head clean off, you've got to ask yourself one question, Do I feel lucky? Well do ya punk?

command line parameters

(Steven Hicks)ⁿ⁺¹23-Apr-02 4:58

(Steven Hicks)ⁿ⁺¹

23-Apr-02 4:58

How would I prevent my MFC app from trying to open a URL as a local document. I parse out the command line parameters, and it comes up with the url, but then the program throws an error about its attempt to try to open it as a document. I have tried Aborting Serialization, I have also tried changing the parameter to do FileNothing.

-Steven

Visit Ltpb.8m.com

3D Image Library: Ltpb.8m.com/Image

Re: command line parameters

Michael P Butler23-Apr-02 11:31

Michael P Butler

23-Apr-02 11:31

Can't you override the code in the CDocument::OnNewDocument or which ever function is being called for the open document (its late and I can't remember the name - something like OnOpenDocument)

Michael Smile | :)

System Stress Test Tool

Giles23-Apr-02 4:54

Giles

23-Apr-02 4:54

Does anyone know what the system stress test tool is called in Visual Studio 6. Used it a while ago, and can't remember what it was called or where to find it?

Thanks,
Unsure | :~

Giles

Re: System Stress Test Tool

Ravi Bhavnani23-Apr-02 5:00

Ravi Bhavnani

23-Apr-02 5:00

You can use my product MemWatcher to simulate low memory conditions during stress testing. It works on Win9x/ME/NT/2K/XP.

/ravi

"There is always one more bug..."
http://www.ravib.com
ravib@ravib.com

Re: System Stress Test Tool

Giles23-Apr-02 5:05

Giles

23-Apr-02 5:05

Thanks Ravi, will take a look.

Giles

Re: System Stress Test Tool

Mike Nordell23-Apr-02 10:04

Mike Nordell

23-Apr-02 10:04

Maybe you are remembering the Win16 "Stress" tool? For Win32 there simply is no such thing, you'd have to use all available virtual memory (or exhibit some NT kernel "bugs"/limits :->) to get what you want.

For GDI I recommend you create a "bunch" of small bitmaps (large bitmaps are put in another kind of memory) to watch even "system" menus go "System (Bold)" on you.

I think you can screw up the whole user(32) subsystem by messing around with window messages, but then your whole workstation would grind to a halt (been there, done that, MS refuses to acknowledge problems). You could however easily overflow both GDI and USER in Win9x by just creating ~32K objects.

For memory constrained uses, you could actually just SetProcessWorkingSetSize in your app to a reasonabley small value to see how your app crashes when it's out of memory.

Hope this helps. :->

Re: System Stress Test Tool

Giles23-Apr-02 10:14

Giles

23-Apr-02 10:14

I'm sure there was a tool, to perform different background taks such as heavy disk IO, or processor usage, on which you could turn up the notch.

Ah well.

Giles

Deployment problem (Vc++ Runtime Library Error!)I'm Using VC .Net

HenrikO23-Apr-02 4:48

HenrikO

23-Apr-02 4:48

I have made an MFC Application that works against a SQL Server using ODBC with the CRecorset classes. But when I hav made a workable setup program and runs this on another computer(that does not have visual studio) the installation works fine but when i try to run the exe file i get a VC++ Runtime library Error! Abnormal program termination. What have I've done wrong ..please Help..
Best regards
Henrik

Re: Deployment problem (Vc++ Runtime Library Error!)

l a u r e n23-Apr-02 4:58

l a u r e n

23-Apr-02 4:58

use the 'depends' tool to see what dll's ur app requires and make sure they are in the package u dist
Smile | :)

situations to avoid #37:
"good morning ... how many sugars do you take in your coffee ... and what was your name again?"

coming soon: situations to avoid #38: "...and the dog was there too?"

Re: Deployment problem (Vc++ Runtime Library Error!)

HenrikO23-Apr-02 5:28

HenrikO

23-Apr-02 5:28

I would but I'm running VS . net and the dependencies shows up on a prpertysheet.. it only says that it depends on 2 dll's mfc70*..... Are there any other way?
If not...
Thank you for your reply anyway Smile | :)

Re: Deployment problem (Vc++ Runtime Library Error!)

Mike Zinni23-Apr-02 5:04

Mike Zinni

23-Apr-02 5:04

HenrikO wrote:
I have made an MFC Application that works against a SQL Server using ODBC with the CRecorset classes. But when I hav made a workable setup program and runs this on another computer(that does not have visual studio) the installation works fine but when i try to run the exe file i get a VC++ Runtime library Error! Abnormal program termination. What have I've done wrong ..please Help..

What type of error are you receiving when you try to run your app? Does the PC you are trying to set up your app on have all the MFC runtime libraries installed? You should read through this part of the C++ FAQ. It deals with a problem that sounds similar (if not exactly the same) to yours. Hope this helps.

-Mike Zinni
Software Engineer
email: mzinni@rimail.com
AIM: zin9999

Re: Deployment problem (Vc++ Runtime Library Error!)

act_x23-Apr-02 5:23

act_x

23-Apr-02 5:23

Try using Installshield . it actually does the job of searching for dll's and required ocx's required .
or
While building the code , check the project settings. Try including all the dll's during compilation.
or
if u know the dlls required , copy them in the new pc and register theses Dll's using regsvr32.exe

Re: Deployment problem (Vc++ Runtime Library Error!)

Michael P Butler23-Apr-02 5:39

Michael P Butler

23-Apr-02 5:39

Do you have the same version of MDAC installed on both machines?

Also does the release version work on your development machine?

Michael Smile | :)

BSTR (char * ) and MSXML basic question...

Braulio Dez23-Apr-02 4:16

Braulio Dez

23-Apr-02 4:16

Hi,

I´m making a thing that seems to work ok, but I´m not quite sure if it´s right done or not ( my ANSI C experience tell me... NAAAAA ! MALLOC MAAAN AND COPY THE BUFFER.... Smile | :)

), it´s quite basic asigning to a text node an (char *).

         char buf[255];  // Not longer than this for this values... ;-)
MSXML2::IXMLDOMNodePtr  pCostSelNode   = _pXMLClonedDoc->selectSingleNode((BSTR) strCostSelNode);

            if(pCostSelNode != NULL) {
               itoa(iIndex, buf, 10);   
               pCostSelNode->text = buf; // Is this correct ??????
            }

Is correct to assing to the bstr that buffer in that way ( I suposse if it´s _bstr_t friendly it should but... Dead | X|

).

Thanks in advance, greetings
Braulio

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