Re: Multiple options - C / C++ / MFC Discussion Boards

Tomer Kanza16-Jun-05 0:03

16-Jun-05 0:03

The debugger doesn't report a memory leak, that's why it's so confusing. But looking at the amount of memory the application consumes it constantly goes up and only goes down when I close the app.
If you can try those few lines of code I posted above you will see it happening.

Array Problem

aaadetos14-Jun-05 22:41

aaadetos

14-Jun-05 22:41

Hi,
im trying to use the specific value of an array in a computation in another function; but don't know how to set it up. In test(), i want to use the 6th value of C[] in the computation. How do i set this up please?

<br />
#include "stdafx.h"<br />
#include <cmath><br />
<br />
const int size = 10;<br />
double A[size] = {0},B[size] = {0}, C[size],c,d;<br />
<br />
double PI = 3.141592653589793238462643383279502884197;<br />
<br />
void rah(double C[])<br />
{<br />
<br />
	for (int i=0;i<size;i++)<br />
	{<br />
		A[i] = sqrt(10*i);<br />
		B[i] = 2*PI*i;<br />
		C[i] = A[i]*B[i];<br />
	}<br />
}<br />
<br />
double test()//how do i write this correctly?<br />
{<br />
	rah(C);<br />
	d = PI * rah(C[5]);<br />
<br />
}<br />
<br />
<br />
int main(int argc, char* argv[])<br />
{<br />
	test();<br />
//	printf("Hello World!\n");<br />
	return 0;<br />
}<br />
<br />

Re: Array Problem

narendra_ b14-Jun-05 23:48

narendra_ b

14-Jun-05 23:48

i am not clear abt ur requirement. try this

#include <stdio.h>
#include <math.h>
const int size = 10;
double A[size] = {0},B[size] = {0}, C[size],c,d;

double PI = 3.141592653589793238462643383279502884197;

double rah(double *C)
{
int i = C-::C ;
A[i] = sqrt(10*i);
B[i] = 2*PI*i;
::C[i] = A[i]*B[i];
return ::C[i] ;

}

double test()//how do i write this correctly?
{

d = PI * rah(&C[5]);
return d ;

}

int main(int argc, char* argv[])
{

printf("Hello World!\n %f", test());
return 0;
}

naren

VC++ programmer

Re: Array Problem

David Crow15-Jun-05 5:14

David Crow

15-Jun-05 5:14

aaadetos wrote:
In test(), i want to use the 6th value of C[] in the computation. How do i set this up please?

double test()//how do i write this correctly?
{
rah(C);
d = PI * rah(C[5]);
}

It appears that you are already using "the 6th value of C[] in the computation." What is it that you think is wrong?

The code that I do see as wrong is when you are calling the rah() function. rah() is expecting a double array (i.e., C[]), yet you are calling it with a single double value (i.e., C[5]).

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: Array Problem

aaadetos15-Jun-05 6:58

aaadetos

15-Jun-05 6:58

Thanks a lot guys. The dilemma was to use one of the elements (the 6th) in the computation. I implemented test() in the following way:

<br />
double test()<br />
{<br />
rah(C);<br />
d = PI * C[5];<br />
return d;<br />
}

Re: Array Problem

David Crow15-Jun-05 7:35

David Crow

15-Jun-05 7:35

Why is d a global variable? Unless absolutely necesssary, that is very poor practice. In this instance, it makes no sense for test() to return d since it is already global. Either make d local to the test() function, or change test() to return nothing.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Multiple options

Rostfrei14-Jun-05 22:33

Rostfrei

14-Jun-05 22:33

Hi!

I have a begginers question. How do I provide many options in one function argument like Win32 API does for example (not real function):

a.) DrawDialog(FRAMED | GREY | BOLD);

Here dialog window will have all requested behaviour.

b.) DrawDialog(FRAMED);

Here dialog window will be just framed, other options will be something by default.

I'd like to do something like that in my program. I have many LED's with colours green, red, orange. Example:

a.) SetLED(green, red, orange);

In this case all LED's with this colour would be led up.

b.) SetLED(green, orange);

In this case all LED's with this colour green and orange would be led up, green would be left alone.

Can anyone please help me and sugest how do I do that?

Best regards,

Rostfrei

Re: Multiple options

Cedric Moonen14-Jun-05 22:39

Cedric Moonen

14-Jun-05 22:39

It is not using multiple arguments but using one single argument that is used as a flag:

<br />
#define LED_GREEN  0x001<br />
#define LED_BLUE   0x002<br />
#define LED_RED    0x004<br />

The define are just to set one bit to 1

And so, inside your function, you check if the specified bit is set:

void SetLed(int LedMask)<br />
{<br />
  if (LedMask & LED_GREEN)<br />
    // Activate green led<br />
<br />
  ...<br />
  ...<br />
}<br />

[EDIT] I forgot to say that:
You can then call your function like that:

SetLed(GREEN_LED | RED_LED);

That will activate the green and red leds

Hope this helps

Re: Multiple options

Rostfrei14-Jun-05 23:12

Rostfrei

14-Jun-05 23:12

That is exactly what I needed. Thank you!

Rostfrei

change Location URL in IE using BHO?

ThinkingPrometheus14-Jun-05 21:47

ThinkingPrometheus

14-Jun-05 21:47

hiho@ll

i'm working on a browser helper object, which should have a "Boss coming" feature
the problem is how can i change the Location URL of IE?

what i do:
to load the url fast i have a local copy of google index.htm site with the google logo
i'm loading the file using navigate function, but the Location points to a local file!
using the IWebBrowser interface i only found a get_LocationURL function, but i need a set_LocationURL!!

anybody knows such a function
thx@ll

ActiveX Setup program

Anonymous14-Jun-05 21:25

Anonymous

14-Jun-05 21:25

I have an activeX control and need to make a setup program and force setup to call DllRegisterServer , how can I achieve this?

Re: ActiveX Setup program

Cedric Moonen14-Jun-05 21:52

Cedric Moonen

14-Jun-05 21:52

I think a good way to do that is to use an installation program (like InstallShield). This program will call regsvr32 that will register the ActiveX for you.

ActiveX in Excel

Mimmi51114-Jun-05 21:01

Mimmi511

14-Jun-05 21:01

Hi ,

I programmed an activeX control with VC++. I added a ClickEvent and a method OnLButtonUp that fires this event, when you click on the control. In the testcontainer of Visual Studio this works fine.

Now I loaded my control into excel. Here nothing happens when I click on the control. Debugging showed me, that my OnLButtonUp is never called.

How do I get the Click Event in Excel?
Can somebody help me?

Thx,
Mimmi511

#include ...

pardis14-Jun-05 20:43

pardis

14-Jun-05 20:43

Hi all
i have made an mfc dialog based application "test" .there is a dialog named testdlg , a generic class named CStart and a com class named CCall .
in testdlg.h file there is #include "Start.h" . in start.h there is #include "Call.h" . i want to add #include "testdlg.h" in Call.h ,but there is 8 error "IDD_TEST_DLG undeclared identifier and Expected constant expression " on the line enum {IDD=IDD_TEST_DLG} in testdlg.h file .

Re: #include ...

Bob Stanneveld14-Jun-05 20:45

Bob Stanneveld

14-Jun-05 20:45

You should include resource.h before you include TestDlg.h..

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

Re: #include ...

Rick York15-Jun-05 8:21

Rick York

15-Jun-05 8:21

I believe that headers should provide all information necessary to use them. Since that header requires Resource.h it should include it in my opinion. Therefore, I do this in my dialog headers :

#ifndef IDD_TEST_DLG
#include "Resource.h"
#endif

Tab Icon

LiYS14-Jun-05 20:06

LiYS

14-Jun-05 20:06

Hi all:

I have a pure white background imagelist which is used for the TabCtrl. But what the problem is when I add this icon to the TabCtrl, it seems it didn't mask the white back ground out. The following is the code

bitmap.LoadBitmap(IDB_ICON);<br />
    imgList.Add(&bitmap, RGB(255, 255, 255)); // mask out the white bkgrd<br />
    tabctrl.SetImageList(&imgList);<br />
    tabctrl.InsertItem(0, "", 0);

I've tried imglist.SetBKColor(CLR_NONE); the result is still the same!
Can anyone help me fix the problem?

client-server application

ask_you14-Jun-05 20:03

ask_you

14-Jun-05 20:03

i want to develop a client-server application where the client application is an executable. whenever the executable starts, it should first contact the server, get validated and only then start. the purpose behind it is to see that only those machines for which the server maintains a list can run the executable. can any1 suggest me some sample code or some suggestions on how to proceed?

Re: client-server application

ThatsAlok14-Jun-05 21:13

ThatsAlok

14-Jun-05 21:13

this link will good start for you

http://www.codeproject.com/internet/#Client%2FServer+Development[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Can Visual C++ .Net genarate SSE code

HasanMalaysia14-Jun-05 18:40

HasanMalaysia

14-Jun-05 18:40

Hi
Can Visual C++ .Net compiler genarate and make use of the SSE instructions of Intel processors (like Pentium 3 and Pentium 4)?

Let me say it in another way:
Can the compiler make use of the parallel-processing capability of the SSE extension on optimizing the genarated code of my program? Or I should myself use SSE instructios explicitly to make use of SSE capability?

Thank you and Sorry if I did not make it clear.

Re: Can Visual C++ .Net genarate SSE code

narendra_ b14-Jun-05 19:11

narendra_ b

14-Jun-05 19:11

i think based on compilation flags like /arch:SSE, /arch:SSE2, compiler will generate the optimised code

naren

VC++ programmer

Re: Can Visual C++ .Net genarate SSE code

narendra_ b14-Jun-05 19:13

narendra_ b

14-Jun-05 19:13

try this link
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclang/html/vcrefstreamingsimdextensions.asp

naren

VC++ programmer

Re: Can Visual C++ .Net genarate SSE code

HasanMalaysia18-Jun-05 22:44

HasanMalaysia

18-Jun-05 22:44

Thanks naren.

I already checked the link provided by you and found no clear statement that .Net produce Parallel SSE code. Yes, the compiler can genarate and use SSE instructions but I ask whether it can use the parallel
capability of the SSE extension which I have no evidence it's could be done by the compiler!!!

thanks again naren

IMPLEMENT_DYNAMIC Error

Guoguor14-Jun-05 17:58

Guoguor

14-Jun-05 17:58

Code :

at .cpp file :

IMPLEMENT_DYNAMIC(alb2CaptureOptionTree , COptionTree)

//two .h file
class COptionTree : public CWnd
{
....................
}

class alb2CaptureOptionTree : public COptionTree
{
DECLARE_DYNAMIC(alb2CaptureOptionTree)
..........
}

Error :
when compiling the code , Errors occur .

error C2039: 'classCOptionTree' : is not a member of 'COptionTree'
error C2065: 'classCOptionTree' : undeclared identifier

In fact , I never define a class named classCOptionTree.
Why ?
What's the reason?
Thank you !

Fly as a bird

Re: IMPLEMENT_DYNAMIC Error

narendra_ b14-Jun-05 19:03

narendra_ b

14-Jun-05 19:03

add DECLARE_DYNAMIC in base class also. In ur code add
DECLARE_DYNAMIC(COptionTree) in class COptionTree, and add
IMPLEMENT_DYNAMIC(COptionTree,CWnd)in the cpp file

Naren

VC++ programmer

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