C / C++ / MFC

Re: //--------- i need some help please -------------//

21-Sep-06 0:14

You can use from a query and I remember that you said you have 60000 records Smile | :)

and I said to you I searched for you for speed and I found a good link but I losed it if you can find this site on this site you can see algorithms for search on databases I guess its very helpful for you

WhiteSky

Bravoone_200621-Sep-06 0:46

Bravoone_2006

21-Sep-06 0:46

what site ?
please tell me !!!!!!!!!!!!!
Smile | :)

Bravoone

Re: //--------- i need some help please -------------//

Hamid_RT21-Sep-06 2:01

Re: //--------- i need some help please -------------//

21-Sep-06 2:01

I said i found for you morning but I losed it Im sorry in fact I see your questions about speed (i think more 15 question Smile | :)

) and I searched but I losed Im sorry.

WhiteSky

Bravoone_200621-Sep-06 2:12

Bravoone_2006

21-Sep-06 2:12

its day 24 when i start this code you now ?

... and i dont have any ideea on how can i do this ....

Cry | :((

thanks anyway !!!!!!!!!

Bravoone

Re: //--------- i need some help please -------------//

Eytukan21-Sep-06 4:06

Eytukan

21-Sep-06 4:06

This is not and IDE, not need to comment your lines?
//-----Why the hell you add these extra pipes and slashes? Doesn't it look aweful ?----//

<marquee scrollamount="1" scrolldelay="1" direction="up" height="10" step="1">--[ Jig | [Dance]

]--

[My Current Status]

Link2006 wrote:Let's take it outside of CP
Jeremy : Please don't.I would love to see this.I'm making the popcorn already.

Re: //--------- i need some help please -------------//

Hamid_RT21-Sep-06 20:05

Re: //--------- i need some help please -------------//

21-Sep-06 20:05

but I think in VC we use //statement not //statement// Smile | :)

WhiteSky

Eytukan21-Sep-06 21:27

Eytukan

21-Sep-06 21:27

// hey but adding a // at the end of the comment line says that the comment is over. We use in our VC++ Poke tongue | ;-P

//

/* you get me or not */ ?? Poke tongue | ;-P

<marquee scrollamount="1" scrolldelay="1" direction="up" height="10" step="1">--[ Jig | [Dance]

]--

[My Current Status]

Link2006 wrote:Let's take it outside of CP
Jeremy : Please don't.I would love to see this.I'm making the popcorn already.

problem with std::vector

erfi20-Sep-06 23:21

erfi

20-Sep-06 23:21

in my header file i wrote this code:

class CMyDlg : public CDialog
{
public:
        int varCount;
	vector<<int> intVec;

        // ...
}

and in the cpp file wrote this code :

void CQMDlg::OnGetvarCountButton() 
{
     // initialize varCount
           
     for(int i=0;i!=varCount;i++)    
     {
	intVec.push_back(i);
     }
}

there is no error in compilation but when i press that specific button, program hangs.
can somebody help me?

thanks

prasad_som20-Sep-06 23:34

20-Sep-06 23:34

Have stepped in to the code ? what varCount is expected to initialize with? Probably its not initializing properly and going into loop.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Waldermort20-Sep-06 23:35

Waldermort

20-Sep-06 23:35

How exactly have you initialized varCount?

Your loop has a problem:

for(int i=0;i!=varCount;i++)

while i is not equal to varCount, thats just asking for trouble. Try changing it to

for(int i=0;i<varCount;i++)

erfi20-Sep-06 23:41

erfi

20-Sep-06 23:41

thank you guys.
yes, my problem was in varCount initialization.

and i have another problem. when i write

intVec.

the property container menu of intVec doesn't appears.

Christian Graus21-Sep-06 0:16

Christian Graus

21-Sep-06 0:16

Intellisense doesn't work ? That doesn't really matter, does it ?

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

prasad_som21-Sep-06 0:42

21-Sep-06 0:42

Many times, deleting .ncb file in project folder and rebuilding application do work. Smile | :)

Prasad
Notifier using ATL | Operator new[],delete[][^]

erfi21-Sep-06 1:08

erfi

21-Sep-06 1:08

thanks
i deleted the .ncb file and now it's working.

prasad_som21-Sep-06 0:49

21-Sep-06 0:49

waldermort wrote:
while i is not equal to varCount, thats just asking for trouble

How?

Prasad
Notifier using ATL | Operator new[],delete[][^]

Mr.Brainley21-Sep-06 1:16

Mr.Brainley

21-Sep-06 1:16

Because, it can easily happen, that you skip that specific value, for whatever reason. You could accidently increase the counter twice, initialize it with a value larger than varCount and stuff like that. It's just a matter of clean and readable code. If you want a loop to run as long as i is less or equal some other value, then you should write your condition that way. Lots of problems and timewasting during debugging happen due to such dirty practices.

Then again, STL-Iterators work just that way ( it = YourVector.begin(); it != YourVector.end(); it++ ), but that don't mean it's good =).

prasad_som21-Sep-06 1:28

Re: problem with std::vector [modified]

21-Sep-06 1:28

Actually, I dont follow coding style, by OP,too. All points mentioned by you are valid.
But in given code , that doesn't matter.
As revealed later, it was initializatin problem. Smile | :)

Prasad
Notifier using ATL | Operator new[],delete[][^]

Zac Howland21-Sep-06 3:34

Zac Howland

21-Sep-06 3:34

prasad_som wrote:
But in given code , that doesn't matter.
As revealed later, it was initializatin problem.

Actually, he probably would have caught it sooner because I'm guessing it was something like this:

void CQMDlg::OnGetvarCountButton() 
{
     varCount = -1; // just as an example
     for(int i=0; i!=varCount; ++i)    
     {
	intVec.push_back(i);
     }
}

Which will run forever, whereas if the code was written as:

void CQMDlg::OnGetvarCountButton() 
{
     varCount = -1; // just as an example
     for(int i=0; i<varCount; ++i)    
     {
	intVec.push_back(i);
     }
}

It would have been caught immediately since the vector would have been empty.

As a side note, STL's iterators use != for a reason. For most of the containers, there is no guarantee that the memory locations are sequential, so you can't do a < comparison to find the end of the loop.

-- modified at 10:18 Thursday 21st September, 2006

If you decide to become a software engineer, you are signing up to have a 1/2" piece of silicon tell you exactly how stupid you really are for 8 hours a day, 5 days a week

Zac

prasad_som21-Sep-06 3:48

21-Sep-06 3:48

Zac Howland wrote:
for(int i=0; i!=varCount; ++i

True, I never come across such code,too.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Populating a ComboBox

namy3120-Sep-06 23:13

namy31

20-Sep-06 23:13

Hello everyone,
I m trying to populate my Combobox but i m not successfull as yet.
as usuall I have enetred the data in properties DATA tab of ComboBox
I tryed with insertstring and additem method also but nothing is working.At runtime my ComboBox expands blankly it does not show any data
Thanx,
namy. Frown | :(

namy

prasad_som20-Sep-06 23:36

20-Sep-06 23:36

code ?

Prasad
Notifier using ATL | Operator new[],delete[][^]

namy121-Sep-06 2:30

namy1

21-Sep-06 2:30

Hello prasad,
Yes if u can please give the code
I m same namy i have just changed my name to namy1
thanx

Hamid_RT21-Sep-06 0:17

21-Sep-06 0:17

Can you show snippet code

WhiteSky

namy121-Sep-06 2:33

namy1

21-Sep-06 2:33

I have used this as well as the other one bellow not at same time definitely

char *names[3];
names[0] = "Joe";
names[1] = "Billy";
names[2] = "Bob";

for(int i=0;i<=2;i++)
m_ctrldestcombobox.AddString((LPCTSTR)names[i]);
*****************************************************************

m_ctrldestcombobox.InsertString(1, "SAP R/3");
m_ctrldestcombobox.InsertString(2, "PLM SERVER");

thanx pls reply even if i m acting foolishly

prasad_som21-Sep-06 3:01