Re: Resource Exception - C / C++ / MFC Discussion Boards

Archer28230-Jul-04 6:41

30-Jul-04 6:41

well at first i just read all of it into one buffer
i defined it like so

char *szBuffer;

and then wrote all of it right after reading
everytime i would get the blue screen of death
then if i returned to windows it would be locked up

i looked at an example on MSDN which read and wrote the data in segments, i have had success doing it this way (no problems, except for the ones i mentioned)

note: when i did this in segments i defined my buffer like
char szBuffer[1024];

could this have been a problem?

if it will help i clean up and post the old code that was wasnt working

Re: Problems with files

avenger_sb2530-Jul-04 8:13

avenger_sb25

30-Jul-04 8:13

>>well at first i just read all of it into one buffer. i defined it like so
>>char *szBuffer;

Well Mr. Hotshot, are you allocating memory for szBuffer ??? before using it with your file-handling-functions.... IF NO.... god help you Dead | X|

.
If yes... sorry.
USE malloc or new to alllocate appropriate amount of memory.

>>note: when i did this in segments i defined my buffer like
>>char szBuffer[1024];

look closely... here you alocate the buffer's size to be 1024 bytes. BUT in char* szBuffer.... YOU MAY NOT BE ALLOCATING ANY MEMORY and the 'BLUE SCREEN' loves programmers like you. Poke tongue | ;-P

.... i hope i helped;)

...Avenger

Remember... testing & debugging are always part of programming ...so exterminate those stinking bugs

Re: Problems with files

Archer28230-Jul-04 6:57

Archer282

30-Jul-04 6:57

Funny how right when i go and ask for help my problem seem to be solved before i get an answer

I kinda reverted my code to the way it was when i gettting the bsod and now it seems to be working just fine

and i manged to get SetFilePointer() to go to the end but i had to use GetFileSize()

Logically you would think you could go to the end by doing

SetFilePointer( hFile, 0, NULL, FILE_END );

but i cant it get it to work doing that
infact i cant even get it to go anywhere from FILE_END

just occured to me could that be becuase i only used GENERIC_WRITE access?

Re: Problems with files

darkbyte30-Jul-04 14:20

darkbyte

30-Jul-04 14:20

Well, here's an idea to stop all those kind helping people from answering for nothing: Big Grin | :-D

Once you realize you solved your problem, you could edit your original post and change its title, appending "<--solved" to it.

This would also have the added advantage of giving a clue to people having the same kind of question that they might find their answer in that thread.

Anyone agrees with me ?

Resource Exception

NadAzur30-Jul-04 4:43

NadAzur

30-Jul-04 4:43

Hi,

my application will always have this error after running for a while. The app regularly pops up modeless dialog and closing it after a while. This cycle repeats itself. The background property page will always do OnPaint when this modeless dialog pop up and closes.

Need advise on what could be the problem and how to resolve it. Thanks.

Re: Resource Exception

Jaime Stuardo30-Jul-04 4:52

Jaime Stuardo

30-Jul-04 4:52

post some code so we will be able to guide you.

Jaime

Re: Resource Exception

NadAzur30-Jul-04 5:25

NadAzur

30-Jul-04 5:25

please see below for portion of code

pDC->GetClipBox(&m_rect);
CreateCompatibleDC(pDC);
m_bitmap.CreateCompatibleBitmap(pDC, m_rect.Width(), m_rect.Height());
m_pOldBitmap = SelectObject(&m_bitmap); // ASSERT here
setWindowOrg(m_rect.left, m_rect.top);

Thanks.

Re: Resource Exception

Jaime Stuardo30-Jul-04 5:40

Jaime Stuardo

30-Jul-04 5:40

Are you placing it in OnPaint method? if you are, that CreateCompatibleDC used is the global ::CreateCompatibleDC that expects a HDC as the parameter. That way, be sure the pDC is casted correctly to an HDC. By using the global API function, you will be returned an HDC for the new DC, which MUST be deleted when the DC is no longer needed.

Second, You are creating a compatible DC but you are not using it. You just continue using the old one.

Third, are you DeleteObject the bitmap you are creating?

Finally, if you are implementing a sort of double buffering, why not using a well tested class such as CMemDC which you can find in CodeProject? This class does all those affairs by you.

Jaime

Re: Resource Exception

NadAzur30-Jul-04 19:16

NadAzur

30-Jul-04 19:16

Hi Jaime,

thanks for your reply. Actually I'm already using CMemDC and those codes are from there and the ASSERT happen in that class.

This is the CGridCtrl Class from by Chris Maunder.
void CGridCtrl::OnDraw(CDC& DrawDC)
{
CMemDC dc(&DrawDC);
#else // Use normal DC - this helps in debugging
void CGridCtrl::OnDraw(CDC& dc)
{
#endif
CRect rect;
int row,col;

CRect clipRect;
if (dc.GetClipBox(&clipRect) == ERROR) return;

EraseBkgnd(&dc); // OnEraseBkgnd does nothing, so erase bkgnd here.
// This necessary since we may be using a Memory DC.

int nFixedRowHeight = GetFixedRowHeight();
int nFixedColWidth = GetFixedColumnWidth();
......
}

Hope this is clearer. Thanks.

Re: Resource Exception

bikram singh31-Jul-04 16:44

bikram singh

31-Jul-04 16:44

NadAzur wrote:
Hope this is clearer

Not really. What is the ASSERT text you get? Which file? What Line?

Bikram Singh

MS Word Automation by using VC++

Jijo.Raj30-Jul-04 4:35

Jijo.Raj

30-Jul-04 4:35

Dear All,

We need to generate a Word Document by using MFC. I know the method is Automation and I searched MSDN and Created and saved a simple document with one sentence in it.

But the prblem is that we need to create a document with
- Table of Contents
- Different paragraph style and headings.
- Tables with differnt styles.
- Border to the page,
- Header and Footer.
- Differnt color and fonts for different paragraphs.
- Insert Picture to Some places.

in brief, need to do almost everything by code. I searched a lot in internet to find such tutorials. But cant find. almost all are for VB. But i need VC++ code. Please help me.

Regards,
Jijo.

________________________________

Yesterday is history,
Tomorrow is a mystery,
But today is a present.

Re: MS Word Automation by using VC++

Michael P Butler30-Jul-04 4:45

Michael P Butler

30-Jul-04 4:45

Converting VB samples to VC++ is easy once you've got your head around the Word object model.

There are some good examples here[^], which go beyond a simple document. The mail-merge one is pretty good.

I've found the best way to learn the Word Object model is to use the Word Macro recorder to generate VBA code for the operation and then convert that to C++. It's fairly easy if you use #import to generate the C++ wrappers for the object model.

Michael

CP Blog [^]

Re: MS Word Automation by using VC++

Jijo.Raj30-Jul-04 18:18

Jijo.Raj

30-Jul-04 18:18

Dear Michael,
Thank you very much for your advice. Its very much helpful.

Regards,
Jijo. Wink | ;)

________________________________

Yesterday is history,
Tomorrow is a mystery,
But today is a present.

Re: MS Word Automation by using VC++

Jaime Stuardo30-Jul-04 4:45

Jaime Stuardo

30-Jul-04 4:45

Just load MS Word..... menu Tools/Macro and Record New macro..... do the operation you want to know the code, stop recording, go to Visual Basic Editor and see the code. You can get help for the objects and their methods too.

You can do everything by code.

Jaime

Re: MS Word Automation by using VC++

Jijo.Raj30-Jul-04 18:12

Jijo.Raj

30-Jul-04 18:12

Dear Jaime,
Thank you very much for your reply. Its very much helpful and easy.

Regards,
Jijo. Wink | ;)

________________________________

Yesterday is history,
Tomorrow is a mystery,
But today is a present.

How to store the unrecognized characters in VC6.0+ADO+sql server2000

yuyi200330-Jul-04 4:26

yuyi2003

30-Jul-04 4:26

CString m_sname ;
Rsc->PutCollect("s_name",_variant_t(m_sname));
The question is
when m_sname's value is 6B 62 7A FA 1B D4 A2 7C,
6B is 'k',62 is 'b',7A is 'z',D4 A2 is '寓'(chinese word),7C is '|',but 7A FA has no corresponding character .so 7A FA has
been changed to 3F('?') and stored .I want to know if some ways can solve this question.Thank you !

Re: How to store the unrecognized characters in VC6.0+ADO+sql server2000

Jaime Stuardo30-Jul-04 4:57

Jaime Stuardo

30-Jul-04 4:57

use nvarchar datatype in the SQL Server column

Jaime

Re: CRecordset open table

David Crow30-Jul-04 4:24

David Crow

30-Jul-04 4:24

sirtimid wrote:
db.Open(_T(""), FALSE, FALSE, "ODBC;DSN=MY_DSN");

I believe this should be (with added exception handling):

TRY
{
    db.Open(NULL, FALSE, FALSE, "ODBC;DSN=MY_DSN");
}
CATCH(CDBException, pDBException)
{
    ...
}
END_CATCH

But that's probably just a semantics thing.

sirtimid wrote:
Now I want to open the table "MyTable" from the database, how should I do this?

Derive a class from CRecordset using ClassWizard. It will ask you which table(s) the record set should operate on. After than, just instantiate an object of this new class, something like:

TRY
{
    CMyRecordset rs(&db);
    rs.Open();
    if (! set.IsBOF())
    {
        rs.MoveFirst();
        while (! rs.IsEOF())
            rs.MoveNext();
    }
}
CATCH(CDBException, pDBException)
{
    ...
}
END_CATCH

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

Re: CRecordset open table

Manfred Staiger30-Jul-04 4:58

Manfred Staiger

30-Jul-04 4:58

1) The Class Wizard has a problem with MSAccess 2000 files. I you will need to make the same database with Access 97 and derive your classes with that.

2)
For MSAccess, using CDaoDatabase and CDaoRecordset are the better choice.

3)
Do like DavidCrow has written before.

MS

Task Manager

Jnewg530-Jul-04 4:08

Jnewg5

30-Jul-04 4:08

I have both Studio 6 and Studio .NET installed on one machine. I want to be able to attach to either debuggers via Task Manager right click "Debug" context menu item. I have figured out how to modify the "Debug" command for either studio (e.g. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebug\Debugger). However, what I want is to add 2 items to the context menu of Task Manager so that I can choose which debugger I want. I haven't been able to find the location of Task Manager's context menu data in the registry which makes me think that it may not be alterable. Unless someone knows and I have overlooked - which I am hoping is the case.

Thanks!

Re: Task Manager

jmkhael30-Jul-04 4:26

jmkhael

30-Jul-04 4:26

Why not a simple EXE that acts as a proxy.
Once an attach has been requested, u pop up this exe and from it you have the various choices, and based on the choice, you invoke the correct debugger with the correct command line.

Something like :
"MSDEV -p procid -e procid"

I have to tell you that Studio .NET will nag that he aint the JIT debugger, so a workaround to this problem would be to set it as the JIT debugger then to reactivate yourself as the JIT debugger afterwards.

Good luck.

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: Task Manager

Jnewg530-Jul-04 4:37

Jnewg5

30-Jul-04 4:37

Thanks for the response and suggestion, but I have successfully launched VC6 Debugger by altering the registry previously mentioned and haven't had a problem with the JIT debugger. If it turns out that I can't add to the context menu, I will pursue your suggestion.

Thanks!

Re: Task Manager

jmkhael30-Jul-04 4:45

jmkhael

30-Jul-04 4:45

Maybe i didnt make it clear, but VC6 would attach happily by just using the command line, VS.NET would nag if he finds out he's not the prefered JIT Smile | :)

Another choice is like it is suggested in the other post, to attach from within the interface.
For me i find it much easier to have a small exe where i can chose directly my debugger for the current problem, would it be VC6 VS.NET, WinDbg, OllyDbg or ... let it crash!

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: Task Manager

Michael P Butler30-Jul-04 4:36

Michael P Butler

30-Jul-04 4:36

You can't modify task-manager but both VS.NET and VS6 allow you to attach to a running process. The option is on the debug menu of VS.NET and on the Build->Start Debug menu of VC6.

Michael

CP Blog [^]

Re: Task Manager

Jnewg530-Jul-04 5:07

Jnewg5

30-Jul-04 5:07

Thanks - I am aware of that, but I am falling in line with the adage that "Programmers are lazy." Smile | :)

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