C / C++ / MFC

27-Jan-08 22:29

You can use perfmon tool by Microsoft to count handles.

Maxwell Chen

Re: Uncaught exception

George_George27-Jan-08 22:41

George_George

27-Jan-08 22:41

Thanks Maxwell,

You mean using Handle Count counter of process object? How about number of locks?

regards,
George

help

gentleguy27-Jan-08 18:04

gentleguy

27-Jan-08 18:04

dear all

how to calculate one constant by a multiple array, for example: 6 x 2by3 arrat..how to express by formula, thanks

Li Zhiyuan

5/10/2006

Re: help

CPallini27-Jan-08 22:14

CPallini

27-Jan-08 22:14

you have to iterate the multiplication on all the array elements, for instance

double a[2][3];
int i,j;
for (i=0; i<2; i++)
  for (j=0; j<3; j++)
    a[i][j]= (double)rand()/RAND_MAX;

//Multiplication of the array by a constant
for (i=0; i<2; i++)
  for (j=0; j<3; j++)
    a[i][j] = 6.0 * a[i][j];

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.

[my articles]

C++

rowdy_vc++27-Jan-08 17:49

27-Jan-08 17:49

Hi friends....

i am trouble with my project to working in handling one text file.I have one file in this file has contains data its all(datas) are created are run time only.

I wanna created the serial numbers on creating run time datas.

Thanks in Advance!!!

Raju.k

raju.k

Nitheesh George27-Jan-08 18:05

27-Jan-08 18:05

Hi Raju,

Tell us what u want to do.

rowdy_vc++27-Jan-08 18:15

27-Jan-08 18:15

hi..thanks for ur replay/

i wanna create serial no file...without using keyword

Thanks

Raju.K

raju.k

Maxwell Chen27-Jan-08 18:21

27-Jan-08 18:21

Do you mean adding serial numbers to the file names? Such as:

AAA00001.tmp
AAB00002.tmp
ABD00003.tmp
ACF00004.tmp

Maxwell Chen

rowdy_vc++27-Jan-08 18:33

27-Jan-08 18:33

hi ..

like the serial no :

1.
2.
3.
4.
etc
like this only

Thanks
Raju.K

raju.k

Re: C++ [modified]

Maxwell Chen27-Jan-08 18:36

27-Jan-08 18:36

char* GenerateSerialNumberStr(char* str)
{
  static int i = 1;
  sprintf(str, "%d.", i++);
  return str;
}

Maxwell Chen

modified on Monday, January 28, 2008 3:06:47 AM

rowdy_vc++27-Jan-08 18:52

27-Jan-08 18:52

Hi Chen ..Thanks for your replay..

i have the total file length like this only .i wanna create the serial no this total length of the file how its possible ..

Lfile.Write("",Lfile.GetLength());

Thanks

Raju.K

raju.k

rowdy_vc++27-Jan-08 19:10

27-Jan-08 19:10

Hi Thanks for your replay..

i have the total file length like this only .i wanna create the serial no this total length of the file how its possible ..

Lfile.Write("",Lfile.GetLength());

Lfile is nothing but object of CFile.This Lfile contains some list of datas.

Thanks!!

Raju.K

rp_suman27-Jan-08 20:43

rp_suman

27-Jan-08 20:43

Hi Maxwell!!

Probably you forget to increment value of "i" before return like i = i + 1;.

Why you are having char* argument as you are returning char*?

Regards,
Suman

Maxwell Chen27-Jan-08 21:06

27-Jan-08 21:06

rp_suman wrote:
Probably you forget to increment value of "i" before return like i = i + 1;.

Yes I forgot. Sorry! Poke tongue | ;-P

rp_suman wrote:
Why you are having char* argument as you are returning char*?

To return the original address for later use. As:

char* Test(char* str)
{
  static int i = 1;
  sprintf(str, "%d.", i++); // Now I remember to increment it.
  return str;
}
// ...
char sBuf[10] = {0};
int v = 0;
for( ; v < 3; v++) {
  printf(Test(sBuf));
  printf("\n");
}

Maxwell Chen

rp_suman27-Jan-08 21:12

rp_suman

27-Jan-08 21:12

Maxwell Chen wrote:
To return the original address for later use.

That's nice..

Thanks & Regards,
Suman Big Grin | :-D

Working with two classes

CodingLover27-Jan-08 17:03

27-Jan-08 17:03

Hi all,

I have a class and one of it has a function as follows.

void CMsgRecorder::SetGroupState(char chState) // Eranga
{
// do the processing
}

defining as follows,

class CMsgRecorder
{
public:
void SetGroupState(char chState);
}

Other class has following function.

void CRfSvrDriver::ShowInfo()
{
//call SetGroupState() from here
}

It's also define as public function in CRfSvrDriver class. How can I call SetGroupState() from the ShowInfo() which are in two classes.

Help really appreciate Smile | :)

I appreciate your help all the time...
Eranga Smile | :)

Nitheesh George27-Jan-08 17:12

27-Jan-08 17:12

use inheritance.

class CMsgRecorder
{
public:
void SetGroupState(char chState)
{
do-something;
}
};

class CRfSvrDriver : public CMsgRecorder
{
public:
void ShowInfo()
{
SetGroupState();//calls the base function CMsgRecorder::SetGroupState
}
};

CodingLover27-Jan-08 17:20

27-Jan-08 17:20

Yes I do, but the question is this. I already use one class there as follows.

class CRfSvrDriver :
	public CCmdDriver

How can I used another class, how to separate those two

I appreciate your help all the time...
Eranga Smile | :)

Nitheesh George27-Jan-08 17:37

27-Jan-08 17:37

then why don't you try this

class CRfSvrDriver :public CCmdDriver,public MsgRecorder

OR

u want to maintain two separate version of the class CRfSvrDriver ?

CodingLover27-Jan-08 17:41

27-Jan-08 17:41

Ok, I can separate by a comma and do it. But then I comes with a constructor issue. I can't change my constructor now.

So I change my plan, simply used a pointer to the other class as follows. Include the CMsgRecorder header file in the ShowInfo header file.

void CRfSvrDriver::ShowInfo(CMsgRecorder* msgRec)
{
msgRec->SetGroupState('R');
}

But it gives a compile error.

error LNK2019: unresolved external symbol "public: void __thiscall CMsgRecorder::SetGroupState(char)" 
(?SetGroupState@CMsgRecorder@@QAEXD@Z) referenced in function "public: int __thiscall 
CRfSvrDriver::ProcessCommand(class ATL::CStringT<char,class strtraitmfc_dll<char,class="" atl::chtraitscrt<char=""> > 
>,unsigned int,class CMsgRecorder *)" 
(?ProcessCommand@CRfSvrDriver@@QAEHV?$CStringT@DV?$StrTraitMFC_DLL@DV?$
ChTraitsCRT@D@ATL@@@@@ATL@@IPAVCMsgRecorder@@@Z)
</char,class>

I hope it is linker error, but all functions are declared correctly. You have any suggestion for me on this.

I appreciate your help all the time...
Eranga Smile | :)

Nitheesh George27-Jan-08 18:00

27-Jan-08 18:00

the linker cannot find the definition of SetGroupState that is the problem. whether u declared SetGroupState as a static function? or not defined it.

And another thing i don't think the method u opted is a good programming practice. Inheritance is the good method in such situations.

CodingLover27-Jan-08 18:06

27-Jan-08 18:06

Ok pal. Thanks.

Actually I missed one thing there. Those two classes are in two projects. I think that is why there is a linker error. What I can do now. Frown | :(

I appreciate your help all the time...
Eranga Smile | :)

Nitheesh George27-Jan-08 18:17