C / C++ / MFC

.dan.g.28-Aug-02 21:36

.dan.g.

28-Aug-02 21:36

without more info about the fatal error (ie call stack), i suspect that the view is calling a CDocument function on a null pointer (because there is no document).

Anonymous29-Aug-02 9:47

Anonymous

29-Aug-02 9:47

Hello Dan,

thank you for your reply!

I don't have any skills at the doc/view... architecture. Can you please try to find the error in my app? (it's only a little testapp)

How can i upload the testapp to here? Or can i send it to you via enail?

I really need help, i tryed to fix that myself, but i don't have sucess.
And i wrote 3 post's about this on codeguru, and NONE reply to me.

Thank you very much!!!

Fiffi

.dan.g.1-Sep-02 13:55

.dan.g.

1-Sep-02 13:55

i mailed you to zip it up and send it to me at dainelg@bde.com.au.

did you not receive it?

.dan.g.2-Sep-02 15:33

.dan.g.

2-Sep-02 15:33

doh! that should have been danielg@bde.com.au

Help!!! How to Use ActiveX control's Properties in VC++

Anonymous3-Sep-02 21:51

Anonymous

3-Sep-02 21:51

Hello Dan,

I have convert the project into doc/view architecture, that deleted the error.

Thank you very much for your help!

david_fan28-Aug-02 7:23

david_fan

28-Aug-02 7:23

Microsoft Calendar Control 8.0(Mscal.Ocx).
There are some Properties, ie: Month, Year. I can get their values in VB program like "value1 = m_Calendar.Month" , "value2 = m_Calendar.Year".
But how to get "Month","Year" in VC++ program???
Smile | :)

Thanks a lot.

David

Connect more than two tables in CGridCtrl

Pole28-Aug-02 6:56

Pole

28-Aug-02 6:56

I'm programming a database soft.Fortunately,I found and used CGridCtrl(2.24) into my program(list data,print it,and set various features...).I want execute SQL clause and fetch data from relevant tables.But I found it difficult to do that(compared to MS Data Grid , DB Grid,etc).
Could you help me?
Thanks for any help. Smile | :)

Sincerely,Pole.

Re: Connect more than two tables in CGridCtrl

Mazdak28-Aug-02 7:59

Mazdak

28-Aug-02 7:59

Pole wrote:
I want execute SQL clause and fetch data from relevant tables.

I don't think it support it like MS data grid.You have to handle everything yourself in that datagrid.

Mazy

"If I go crazy then will you still
Call me Superman
If I’m alive and well, will you be
There holding my hand
I’ll keep you by my side with
My superhuman might
Kryptonite"Kryptonite-3 Doors Down

First Chance exception

boon kian28-Aug-02 6:43

boon kian

28-Aug-02 6:43

Hi,

Anyone noe what error is this and how to remedy it:
First-chance exception : 0xC0000005: Access Violation.

I cannot seems to find it in the msdn library

Emilio Guijarro28-Aug-02 6:48

Emilio Guijarro

28-Aug-02 6:48

I haven´t seen documenation about it, but it always fires on my screen when my code reads/writes to a unassigned memory block. This happens very usually when working with pointers and new/delete operators. Check all the rountines using dynamic memory allocation before the point that breaks the execution of your application.

"nobody knows it, but you´ve got a secret smile, and you use it only for me"

C^hris L^osinger28-Aug-02 6:49

C^hris L^osinger

28-Aug-02 6:49

it means your process does not have access to the memory it was trying to use. like the previous poster noted, this usually means you have a bad pointer. check all your pointers - make sure they have valid values.

-c

A man is like a rusty wheel on a rusty cart,
He sings his song as he rattles along and then he falls apart.
-- Richard Thompson

image effects!

boon kian28-Aug-02 7:18

boon kian

28-Aug-02 7:18

Hi all,

Thanx a lot for the help.

I think i try to paint u all a better pic:

In my prog, I have 2 arrays. The size of the array depend on the size of my image. One array use a "new" operator to declare and the other one is using the CArray.

my program uses extensive recusive function to process the image. When i try my program on a small image (eg ard 100x100 pixel) it works perfectly fine.

When i try it on large images the first-chance exception occur.
when the error occur, there is a lot of the recusive function being called. And the error occur at the begining of the function (no code is there).

Can anyone please enlighten me what has happened and any possible solutions ?? Thanx you !

bk

Mariusz Popiolek28-Aug-02 10:48

Mariusz Popiolek

28-Aug-02 10:48

Hi Probably you are trying to access memory that is read only and it might be caused by using pointers in an unproper way (maybe you haven't initialized something or you are trying to access memory that you've just released). Try to use call stack to find out where have you made that mistake.
Greetings

question about Carlos Antollini ADO classes !!!

Michael Dunn28-Aug-02 12:30

Michael Dunn

28-Aug-02 12:30

0xC0000005 is a GPF. You read or wrote memory you didn't have access to. Usually this is a bad, uninitialized, or dangling pointer.

--Mike--
Just released - RightClick-Encrypt v1.4 - Adds fast & easy file encryption to Explorer
My really out-of-date homepage
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Hadi Rezaee28-Aug-02 6:38

Hadi Rezaee

28-Aug-02 6:38

Hello there,
I looking for a function in the recordset class that return the current position in the recordset !!!
Like this:
dwPos = m_Rs.GetCurrentPos();

Also, I’m looking for other function that can jump to special record by record number !
Like this:
m_Rs.SetCurrentPos(50);

Is there thease functions in the recordset class, currently ???
If not, can you tell me how can I write this ??

Regards,

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Re: question about Carlos Antollini ADO classes !!!

Prem Kumar28-Aug-02 6:51

Prem Kumar

28-Aug-02 6:51

You can use bookmarks for storing the current position.

As far as i know is no way currently to jump to a random position.
But I guess you could always use 'Find', if you know any thing
about the record you want to jump to(ex primary keys are usually
automunbers)

Re: question about Carlos Antollini ADO classes !!!

Mazdak28-Aug-02 7:55

Mazdak

28-Aug-02 7:55

GetAbsolutePosition()
SetAbsolutePosition()

Mazy

"If I go crazy then will you still
Call me Superman
If I’m alive and well, will you be
There holding my hand
I’ll keep you by my side with
My superhuman might
Kryptonite"Kryptonite-3 Doors Down

LOW speed in opening Access database !

Hadi Rezaee28-Aug-02 6:37

Hadi Rezaee

28-Aug-02 6:37

Hi there,
I’m writing a database project …
I used Access database …
I have 50925 records in this database …
My program is very LOW in opening that in starting up (8 seconds)
Is there any way to improve the SPEED of opening the database ?!!!!!!!!!

NOTICE: I connected to database by ADO (OLEDB JET 4.0).

Regards,

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Andreas Saurwein28-Aug-02 7:06

Andreas Saurwein

28-Aug-02 7:06

What about using MSDE instead?

int x=1, y=5; 
x^=y^=x^=y; // whats the content of x and y now?
<a href="http://www.codeproject.com/tips/StupidXORTrick.asp" target="_blank">ClickHereForHelp();</a>

Hadi Rezaee28-Aug-02 7:26

Hadi Rezaee

28-Aug-02 7:26

MSDE ???
what is it ????????
I really didn't hear anything about it !!!!
Could you explain about it ???

WTF | :WTF:

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Jose Cruz28-Aug-02 7:58

Jose Cruz

28-Aug-02 7:58

MSDE stands for Microsoft Desktop engine. It´s a light version of SQL Server, this version comes without the graphical administrative tools.
Follow the Link:
http://www.codeproject.com/useritems/JetMSDE.asp

Mazdak28-Aug-02 7:57

Mazdak

28-Aug-02 7:57

Hadi_Rezaie wrote:
MSDE ???

I think desktop version of SQLServer.I don't think it helps you.

Mazy

"If I go crazy then will you still
Call me Superman
If I’m alive and well, will you be
There holding my hand
I’ll keep you by my side with
My superhuman might
Kryptonite"Kryptonite-3 Doors Down