C / C++ / MFC Discussion Boards

David Crow2-Jul-07 3:41

2-Jul-07 3:41

Joan Murt wrote:
I was wondering if I can use the new CString class that came with VC++2005 but in VC++6...

If this is possible, how should it be done?

No, but you could possibly derive your own class from CString, and add methods to it that are similar to those in the VS2005 version.

"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

Re: Can I use the new MFC in VC++6?

Hans Dietrich2-Jul-07 7:40

Hans Dietrich

2-Jul-07 7:40

Just curious - what new features do you want to use?

Best wishes,
Hans

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Re: Can I use the new MFC in VC++6?

Joan M2-Jul-07 7:53

Joan M

2-Jul-07 7:53

CString.tokenize...

I wanted to use that and not a custom made tokenizer...

I'm sure that there are plenty of them here in CP, but well, I have an old app that deserve a little of maintenance... and I've got used to use that tokenizer...

Re: Can I use the new MFC in VC++6?

Michael Dunn2-Jul-07 10:36

Michael Dunn

2-Jul-07 10:36

You can use AfxExtractSubString() in VC6

Re: Can I use the new MFC in VC++6?

Joan M3-Jul-07 9:31

Joan M

3-Jul-07 9:31

Thank you, I'll give it a try...

create DSN at runtime

meenakhisjoshi2-Jul-07 1:48

meenakhisjoshi

2-Jul-07 1:48

Hi....
I want to create dsn at runtime using mfc..
Is there any solution
plz help me!!!!!!

Thanks in advance

Re: create DSN at runtime

Y_Kaushik2-Jul-07 1:57

Y_Kaushik

2-Jul-07 1:57

I don't think we can do this.

Note : Please give detail which type of DSN you want to create at run time.

I think u will be aware about System DSN,User DSN,File DSN
Laugh | :laugh:

Regard's
Kaushik

Re: create DSN at runtime

meenakhisjoshi2-Jul-07 2:02

meenakhisjoshi

2-Jul-07 2:02

I want to use System DSN..

Re: create DSN at runtime

MANISH RASTOGI2-Jul-07 2:20

MANISH RASTOGI

2-Jul-07 2:20

Use SQLConfigDataSource()

Manish Rastogi

Re: create DSN at runtime

meenakhisjoshi2-Jul-07 3:44

meenakhisjoshi

2-Jul-07 3:44

Hi I use SQLConfigDataSource() API but it create User DSN & i want to create System DSN so plz help me.....

Re: create DSN at runtime

meenakhisjoshi2-Jul-07 4:00

meenakhisjoshi

2-Jul-07 4:00

Thanks it has been done.............

Re: create DSN at runtime

meenakhisjoshi2-Jul-07 4:03

meenakhisjoshi

2-Jul-07 4:03

But i have to done using Sql database so can it done using same API?

Re: create DSN at runtime

David Crow2-Jul-07 4:32

David Crow

2-Jul-07 4:32

A DSN does not know/care about the underlying DBMS. The third argument is where you specify the type, and the fourth argument contains the details of that type.

"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

Re: create DSN at runtime

meenakhisjoshi2-Jul-07 19:29

meenakhisjoshi

2-Jul-07 19:29

The third argument is "Microsoft Access Driver (*.mdb)" then what should changes are required?

Re: create DSN at runtime

meenakhisjoshi2-Jul-07 21:47

meenakhisjoshi

2-Jul-07 21:47

I wrote :

SQLConfigDataSource(NULL,ODBC_ADD_SYS_DSN,"Microsoft SQL Driver (*.sql)\0",(LPCSTR)szDesc))

sprintf(szDesc,"DSN=%s: DESCRIPTION=TOC support source: DBQ=%s: FIL=MicrosoftSQL: DEFAULTDIR=D:\\Database:: ","TestDB","root@localhost\\dtest.sql")

but it gives error so plzzzzzzzzz help me what should i changes?

Re: create DSN at runtime

David Crow3-Jul-07 2:08

David Crow

3-Jul-07 2:08

meenakhisjoshi wrote:
SQLConfigDataSource(NULL,ODBC_ADD_SYS_DSN,"Microsoft SQL Driver (*.sql)\0",(LPCSTR)szDesc))

Why the extra \0 character? This statement is missing a semicolon.

meenakhisjoshi wrote:
sprintf(szDesc,"DSN=%s: DESCRIPTION=TOC support source: DBQ=%s: FIL=MicrosoftSQL: DEFAULTDIR=D:\\Database:: ","TestDB","root@localhost\\dtest.sql")

If you are using MFC, why not use a CString object rather than mess with sprintf()? This statement is also missing a semicolon.

meenakhisjoshi wrote:
but it gives error...

And that error would be?

"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

Re: create DSN at runtime

meenakhisjoshi3-Jul-07 23:33

meenakhisjoshi

3-Jul-07 23:33

In this '\0' just for termination of string
the error is
SQLConfigDataSource is return False.

Is any problem in that syntax

Re: create DSN at runtime

David Crow4-Jul-07 11:42

David Crow

4-Jul-07 11:42

meenakhisjoshi wrote:
In this '\0' just for termination of string

Which string literals already have one of.

meenakhisjoshi wrote:
SQLConfigDataSource is return False.

So have you bothered to call SQLInstallerError() to find out why?

"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

Re: create DSN at runtime

MANISH RASTOGI2-Jul-07 19:03

MANISH RASTOGI

2-Jul-07 19:03

Use ODBC_ADD_SYS_DSN

Manish Rastogi

DATEDIFF function

El'Cachubrey2-Jul-07 1:08

El'Cachubrey

2-Jul-07 1:08

Hi Is exists in c++ a function similar to DATEDIFF in SQL or VB
THANK

Re: DATEDIFF function

CPallini2-Jul-07 1:44

CPallini

2-Jul-07 1:44

If you're using MFC, have a look at CTimeSpan class http://msdn2.microsoft.com/en-us/library/ay6ws8h3(VS.80).aspx[^].
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

Re: DATEDIFF function

benjymous2-Jul-07 1:59

benjymous

2-Jul-07 1:59

CompareFileTime is a win32 function that'll compare two FILETIME structs

Re: DATEDIFF function

vladfein2-Jul-07 9:20

vladfein

2-Jul-07 9:20

Unfortunately, none of the two suggestion above will do what DATEDIFF does...
You need to separate the DATE part of your time value. You didn't say what data type you use for your date/time variables.
The easiest way, I think, is to convert both dates to COleDateTime (which wraps double representation of date/time), truncate the fractional part and simply subtract one value from another.

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Dynamic Structures

Programm3r2-Jul-07 0:32

Programm3r

2-Jul-07 0:32

Hi all,

I would liek to know if it is possible to create dynamic structures? And if it is possible, how would one go about doing it?

Many Thanks
Regards,

The Code Project...Where men are made and legends are born Green Alien | [Alien]

Programm3r
My Blog: ^_^

Re: Dynamic Structures

baerten2-Jul-07 0:45

baerten

2-Jul-07 0:45

Hi,

i think the only way is to use void* Pointer into your struct.
So you can store what-ever in your structure.
But the number of pointers must be specified in the code.

Good luck Smile | :)

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