C / C++ / MFC

28-Feb-09 9:45

You'll want a 'BigNum' library, like this one[^]. Then your program is as simple as this:

#include <iostream>
#include <gmpxx.h>

int main(int, char**)
{
   mpz_class num(10); // mpz_class is GMP's integer numeric class

   while (1)
   {
      std::cout << num << std::endl;
      num += 10;
   }
}

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Debugging Problem

rkshdixit28-Feb-09 0:41

rkshdixit

28-Feb-09 0:41

Hi All,

I am using a 3rd party dll when i am debuging this dll i am facing a problem the problem is it is skiping the function for example if
there are function in dll suppose

A(); // I WANT TO GET IN TO DEBUG A
B();

But dont know how it is getting in to B.
i am using VS2008 with MFC Feature Pack.

Thanks for any idea or suggestion.

Iain Clarke, Warrior Programmer

Iain Clarke, Warrior Programmer28-Feb-09 1:34

28-Feb-09 1:34

Unless the dll is supplied with debugging symbols, and you have the source code, the answer is tough. C++ code gets compiled, and ulness you're amazing with assembler, that's largely it.

So, ask the supplier of the 3rd party dll very nicely.

I'm not 100% sure I've understood your question properly though, so feel free to explain it more.

Iain.

Codeproject MVP for C++, I can't believe it's for my lounge posts...

rkshdixit28-Feb-09 2:59

rkshdixit

28-Feb-09 2:59

Hi,
Thanks for your response.
you are correct i am having source code of dll as well with me actually the problem is very dramatic i am inherting a control class in my project and then creating its object then it is not properly working, if i directly create the object of the baseclass then it is working fine for me but if i create the object of my derived class then it is not working for me.... the sample is below

void SEC_TREECLASS::ParseCreateStruct(CREATESTRUCT& cs)
{
DWORD dwTreeStyle = cs.style & TVS_STYLES;
cs.style &= ~TVS_STYLES;

DWORD dwTreeExStyle = cs.dwExStyle & TVXS_STYLES;
cs.dwExStyle &= ~TVXS_STYLES;

// THIS IS THE PROBLEM POINT I WANT TO GET IN TO THIS METHOD BUT
ModifyTreeCtrlStyle( 0, dwTreeStyle, FALSE );

// IT IS JUMPING INSIDE THIS
ModifyTreeCtrlStyleEx( 0, dwTreeExStyle, FALSE );
}
IF I am creating the same thing in sample code then derived class is also working for me ..... i know it is tough to answer because situation is not consistent ....just if some one have faced this problem ever give some suggestion.

ky_rerun28-Feb-09 16:11

ky_rerun

28-Feb-09 16:11

If the dll has debuging symbols you should be able to step into it. And VS will ask you where the source code is. It may be you have a non debug version if that is the case you will need to rebuild the dll from source with symbols.

a programmer traped in a thugs body

Nest21-Mar-11 19:24

Nest

21-Mar-11 19:24

I have the same problem with the same method in BOOL SEC_TREECLASS::ModifyTreeCtrlStyleEx
inside, the first line is

DWORD dwTreeStyleEx = GetTreeCtrlStyleEx();

but it jumps into SetTreeCtrlStyleEx()

How did you manage to overcome your problem?

vector<string> problem??</string>

Nest22-Mar-11 3:12

Nest

22-Mar-11 3:12

It works now.
Stingray should be compiled as MFC Dll Stingray dll and project settings should indicate that these libraries should be used.
Something like _SFLDLL, _OVDLL.... in preprocessor definition should be put

USB Power managment

ameyakoshti27-Feb-09 23:02

ameyakoshti

27-Feb-09 23:02

How to use this : http://msdn.microsoft.com/en-us/library/ms793200.aspx[^]

can someone give an example?

york52827-Feb-09 22:58

27-Feb-09 22:58

I use

vector<string>

to save a huge file
Each item maybe a word or a sentence
but

vector<string>

cost too many memory

eg:
20M file cost 200M+ memory

How can I reduce memory using??? Poke tongue | ;-P

Thanks
Techie York

Stuart Dootson27-Feb-09 23:30

27-Feb-09 23:30

How about holding the file in a buffer then storing pointers to word beginning & end in the vector:

char* fileBuffer = new char[fileSize];
typedef std::pair<const const=""> Word;

std::vector<word> words;

// Now find each item in the fileBuffer and store the pointers defining its extent in a Word which you can add to words</word></const>

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

bcoide28-Feb-09 0:14

bcoide

28-Feb-09 0:14

Maybe you can just use vector to hold character pointers.

Working example

york52828-Feb-09 3:11

28-Feb-09 3:11

bcoide

Thank you for your share

but I deal with different language

Full Text Search

The vector saves the result of segment

so use string is convinient

but vector's memory grows so fast and huge

a 20M file's result can cost 200M memory

that a waste!!

thank you

maybe I need another idea!

york52828-Feb-09 2:59

28-Feb-09 2:59

It's like this

vec[0] = "you";
vec[1] = "friend";
vec[2] = "你好";
vec[3] = "朋友";

I use

vector<string>

to hold word and build index to search

If I save pointer

The speed of building index maybe not so fast

because I deal with Chinese and English together

I have to consider the speed

but the cost of memory is so big

I wanna find a way on balance

Thank you so much

Stuart Dootson28-Feb-09 3:13

28-Feb-09 3:13

If you had

wchar_t fileBuffer[] = "youfriend你好朋友";

You could have:

typedef std::pair<wchar_t*,> Word;
std::vector<word> words;

words.push_back(std::make_pair(fileBuffer, fileBuffer+3); // Specifies "you"
words.push_back(std::make_pair(fileBuffer+3, fileBuffer+9); // Specifies "friend"
words.push_back(std::make_pair(fileBuffer+9, fileBuffer+11); // Specifies "你好"
words.push_back(std::make_pair(fileBuffer+11, fileBuffer+13); // Specifies "朋友"</word>

?

That could be less overhead than std::string, possibly.

Alternatively, you could use something like a trie[^] to hold all the words?

What's the intent, anyway - why are you building this list of words?

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

york52828-Feb-09 3:26

28-Feb-09 3:26

I am doing a program about Full Text Search

English is easy to segment

but Chinese is complicated

First I should separate text that to make Chinese and English text to two vector

Second do segment to each text and building index for search

I have to consider about speed ,the size of index file and Search speed

some difficulty I've already solved

I wanna do it well

Thank you so much

Rolf Kristensen1-Mar-09 0:49

Rolf Kristensen

1-Mar-09 0:49

Have a feeling that it is caused by the automatic growth of strings / vector.

You can use swap to trim the vector to minimum size. Guess the same thing should be possible with strings.

vector<string>(trim).swap(trim);

Herb Sutter: The Incredible Shrinking vector

It is even better to resize the strings / vectors to their expected size from the start.

york5281-Mar-09 5:51

The sequence of menu command in doc/view architecture?

1-Mar-09 5:51

Yes

That's the problem

I'll try later

Thank you so much for your advise

Poke tongue | ;-P

Joseph Marzbani27-Feb-09 22:56

Joseph Marzbani

27-Feb-09 22:56

Suppose that we've defined (for example) OnAppAbout() function in CMyAppView to be called when the user clicks the About item from Help menu. Now if we define it in both CMainFrame and CMyAppDoc as well, which of them is called when the user clicks the menu item?

Re: The sequence of menu command in doc/view architecture?

Stuart Dootson27-Feb-09 23:33