C / C++ / MFC

Nelek12-Oct-07 2:02

Nelek

12-Oct-07 2:02

mmm, I just made some changes but leaving his point of view.

Anyways, if it is not correct, or it is useless... instead of just ask "this is for what?" would be better to say, "this is not right, you should use...", so I would learn as the same time I try to help Smile | :)

Greetings.

--------
M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?

Help me to understand what I'm saying, and I'll explain it better to you

Wink | ;)

chandu00412-Oct-07 1:38

12-Oct-07 1:38

Eranga Thennakoon wrote:
void CSRFToolDlg::OnBnClickedWrite()
{
char tempBufferWrite[256] = {0} ; // or {}
openFile.Write("text of letters", sizeof(tempBufferWrite)) ;
openFile.Flush() ;
}

instead of

sizeof(tempBufferWrite)

there you put strlen(tempBufferWrite)

thats it.

Suggestion to the members:
prefix your main thread subject with [SOLVED] if it is solved.
chandu.

David Crow12-Oct-07 2:54

12-Oct-07 2:54

chandu004 wrote:
there you put strlen(tempBufferWrite)

That would equate to 0, which is obviously wrong. The second argument to Write() should be the number of bytes in the first argument.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

chandu00412-Oct-07 3:10

12-Oct-07 3:10

the length of hte string should obviously be the number of bytes in that string right??!

Suggestion to the members:
prefix your main thread subject with [SOLVED] if it is solved.
chandu.

David Crow12-Oct-07 3:40

12-Oct-07 3:40

How you choose to say it is up to you, but the second argument to Write() must be the number of bytes in the first argument.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

chandu00412-Oct-07 5:44

12-Oct-07 5:44

please tell me what is the first argument, here and what is its size.
iam very sure that you may be right, but please let me know what is that wrong i have done.
thank you.

Suggestion to the members:
prefix your main thread subject with [SOLVED] if it is solved.
chandu.

David Crow12-Oct-07 5:49

12-Oct-07 5:49

chandu004 wrote:
please tell me what is the first argument...

In your example here, the first argument is the string literal "text of letters".

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

chandu00412-Oct-07 6:21

12-Oct-07 6:21

yah yah
i got it by seeing the nelek's post.
thank you very much(for both of you) for correcting me.

Suggestion to the members:
prefix your main thread subject with [SOLVED] if it is solved.
chandu.

Nelek12-Oct-07 4:01

Nelek

12-Oct-07 4:01

In this case won't work, because the tempBufferWrite is 256 chars long, but the string that is being written in the file is "text of letters" (16 chars), and note that there is no string to have length of. The code gives the "..." directly, not going through the buffer.

char tempBufferWrite[256] = "Test of letters" ; // or {}
openFile.Write(&tempBufferWrite, strlen(tempBufferWrite)) ;

That should work. What you proposed just changing sizeof with strlength must not.

chandu00412-Oct-07 5:54

12-Oct-07 5:54

thanks for the analysis,

Nelek wrote:
char tempBufferWrite[256] = "Test of letters" ; // or {}openFile.Write(&tempBufferWrite, strlen(tempBufferWrite)) ;

That should work

i was thinking that, &tempBufferWrite is used in the write,
i didnt observe some other readstring in that place.

Suggestion to the members:
prefix your main thread subject with [SOLVED] if it is solved.
chandu.

CodingLover14-Oct-07 17:52

14-Oct-07 17:52

Thanks,

Than mean strlen get the length of CString.

Eranga Smile | :)

I appreciate your help all the time...

toxcct12-Oct-07 2:06

toxcct

12-Oct-07 2:06

anyway, just a guess: i see you're coding in C++, so why not using std::string or even CString (if using MFC) ... ?

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CodingLover14-Oct-07 17:57

14-Oct-07 17:57

Actually that readString defines as CString in my code.

Eranga Smile | :)

I appreciate your help all the time...

Mike Dimmick12-Oct-07 6:13

Mike Dimmick

12-Oct-07 6:13

openFile.Write(tempBuffer, amount of data you wrote to tempBuffer);

Don't pass the whole buffer length when you didn't fill that much.

DoEvents: Generating unexpected recursion since 1991

CodingLover14-Oct-07 18:01

14-Oct-07 18:01

Actually that what I've worried about. Couldn't find any way to define the buffer length as the length of string. Actually I tried something like this.

readString.GetLength()

Eranga Smile | :)

I appreciate your help all the time...

Help with MSDN

gReaen11-Oct-07 23:40

gReaen

11-Oct-07 23:40

how can i install msdn library in vc++ 6.0 ??? I'm getting a message as "Please reinstall msdn" when i click on help.....

CodingLover12-Oct-07 0:48

12-Oct-07 0:48

Can you run MSDN individually. At the installation you have a option to combine both MSDN and Visual C++ together. If you neglect that option you have to work with them separately.

Eranga Smile | :)

I appreciate your help all the time...

Nishad S12-Oct-07 1:16

Nishad S

12-Oct-07 1:16

You might be using newer version of MSDN, which cant be taken directly from VC6.

- NS -

David Crow12-Oct-07 2:57

12-Oct-07 2:57

What version of MSDN are you working with?

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

CArray --> afxtempl.h(443) : error C2582

Mike Dimmick12-Oct-07 6:24

Mike Dimmick

12-Oct-07 6:24

The newest version of MSDN Library that still integrates with Visual Studio 6.0 is October 2001. It may still be possible to download this if you're an MSDN subscriber (although not right now as the subscriber download site doesn't seem to be working).

A very out-of-date version of MSDN Library accompanied Visual Studio 6.0 itself (labelled 'MSDN Library for Visual Studio 6.0'). However, this predates Windows 2000 and I would not recommend using it. (It was up-to-date in mid-1998 when Visual Studio 6.0 was released!)

DoEvents: Generating unexpected recursion since 1991

sdancer7511-Oct-07 23:29

sdancer75

11-Oct-07 23:29

I want to create a Type-Safe Array with CArray of the following structure

struct structProjectFiles {

CStringArray strDescription;
CStringArray strFiles;
DWORD dDataCode;

};

====================================================================

When I am trying to fill the array with the following code i get a C2582 error. Is there any way to overide the problem ?

//somewhere in the code

structProjectFiles pj;

pj.strDescription.Add("Hello");
pj.strFiles.Add("Files");
pj.dDataCode = 0;

m_cProjectFiles.Add(pj); -->Error afxtempl.h(443) : error C2582: 'structProjectFiles' : 'operator =' function is unavailable

Regards,

sdancer75

Re: CArray --> afxtempl.h(443) : error C2582

Nibu babu thomas11-Oct-07 23:34

Nibu babu thomas

11-Oct-07 23:34

sdancer75 wrote:
m_cProjectFiles.Add(pj); -->Error afxtempl.h(443) : error C2582: 'structProjectFiles' : 'operator =' function is unavailable

Look here-> http://support.microsoft.com/kb/231995[^]

Nibu thomas
MVP For VC++

Code must be written to be read, not by the compiler, but by another human being.

Programming Blog: http:\\nibuthomas.wordpress.com

Re: CArray --> afxtempl.h(443) : error C2582

David Crow12-Oct-07 2:58