C / C++ / MFC

18-Jan-05 22:28

Hello,

I would like to have 4 examples about odbc, dao, oledb, ado database.

Who can give me those examples or links ?

Thanks in advance.
Smile | :)

IsaacLitingjun18-Jan-05 22:55

IsaacLitingjun

18-Jan-05 22:55

This is quite a good article! Enjoy it. Wink | ;)

http://www.codeproject.com/database/caaadoclass1.asp[^]

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Many nights we've prayed with no proof anyone could hear, we were moving moutains long before we knew we could!
Yet now i'm standing here, although we know there's much to fear, hope seemed like summer bird too swiftly flown away ...

There can be miracles! When you believe, though hope is frail, it's hard to kill!
Who knows what miracles, you can achieve! When you believe, somehow you will ...

YOU WILL WHEN YOU BELIEVE

Anonymous19-Jan-05 0:07

19-Jan-05 0:07

Is there any example more ?

Thank you.

IsaacLitingjun19-Jan-05 0:17

IsaacLitingjun

19-Jan-05 0:17

These links had helped me a lot, hope also can help you. and the first link i have given you has a very clear introduction and good examples.

http://www.codeproject.com/database/caaadoxclass.asp[^]

http://www.codeproject.com/database/msdatagrid.asp[^]

http://www.codeproject.com/database/msdatagridoledb.asp[^]

Best Wishes.

- - - - - - - - - - - - - - - - - - - - - - - -
Many nights we've prayed with no proof anyone could hear, we were moving moutains long before we knew we could!
Yet now i'm standing here, although we know there's much to fear, hope seemed like summer bird too swiftly flown away ...

There can be miracles! When you believe, though hope is frail, it's hard to kill!
Who knows what miracles, you can achieve! When you believe, somehow you will ...

YOU WILL WHEN YOU BELIEVE

Anonymous19-Jan-05 0:32

19-Jan-05 0:32

Thank you very much.
Smile | :)

Anonymous19-Jan-05 0:38

19-Jan-05 0:38

Can you give me Visual C links ?

Thank you.
Smile | :)

Selvam R19-Jan-05 2:50

Selvam R

19-Jan-05 2:50

>>Can you give me Visual C links ?

Hi,

Do you need list of links??

http://msdn.microsoft.com/visualc/[^]

http://www.cetus-links.org/oo_visual_c_plus_plus.html[^]

Regards,
Selvam

Anonymous19-Jan-05 3:17

checking for stack or heap allocation

19-Jan-05 3:17

Thank you very much Smile | :)

;);P

Garth Watkins18-Jan-05 22:24

Garth Watkins

18-Jan-05 22:24

Hi
I need to ensure that an object of a one of my classes only gets created on the stack as opposed to on the heap using 'new'. Is there a compiler keyword (I'm using VC .net)
or some other method to ensure this.

Thanks
Garf

jan larsen18-Jan-05 23:27

jan larsen

18-Jan-05 23:27

I'm not a guru, so take this as a SWAG:
Maybe you could override operator new for your class, and let it throw an exception if invoked?
Or did you mean that operator new should allocate the object on the stack instead of the heap?, in that case, I would say: Not recommendable. (And probably very hard to implement).

"After all it's just text at the end of the day. - Colin Davies

"For example, when a VB programmer comes to my house, they may say 'does your pool need cleaning, sir ?' " - Christian Graus

Garth Watkins19-Jan-05 0:39

Garth Watkins

19-Jan-05 0:39

Thanks Jan

I should have mentioned that I was actually looking for a compile time solution.
Serqe's solution seems to be what I was looking for.

Garth

Serge Krynine18-Jan-05 23:37

Serge Krynine

18-Jan-05 23:37

you need to declare the operator new as either a private or protected; for example:

class A
{
private:
void* operator new(size_t);
};

int _tmain(int argc, _TCHAR* argv[])
{
//error C2248: 'A::operator new' : cannot access private member declared in class 'A'
A* pA = new A;

// OK
A a;

return 0;
}