Managed C++/CLI

candidate function not accessible

9-Mar-13 22:46

You cannot execute these processes independently in this way. vcvarsall.bat needs to be called in the same environment that the compiler will be called. You need to create a new batch file that contains all the commands that you wish to run, and execute that batch file.

Use the best guess

bonosa1-Mar-13 17:35

bonosa

1-Mar-13 17:35

already tried #pragma make public (mynativestruct)

Here is my c++-cli code

  ClassLibraryAT::Class1^ matClass = gcnew ClassLibraryAT::Class1() ;
matClass->M_AT(&cparams,&input,&numcontacts,&contact,&ecdata);

the 'input' struct in the argument list is comprised of ints doubles, stuff like that. Not a managed struct. It's saying the candidate function M_AT is not accessible. How do I resolve this? thanks, sb

Re: candidate function not accessible

Richard MacCutchan2-Mar-13 0:01

Re: candidate function not accessible

2-Mar-13 0:01

bonosa wrote:
It's saying the candidate function M_AT is not accessible. How do I resolve this?

Make sure that M_AT is a public method.

Use the best guess

bonosa2-Mar-13 7:59

bonosa

2-Mar-13 7:59

thanks Richard. It is a public method and shows up in the intellisense.

Re: candidate function not accessible

Richard MacCutchan2-Mar-13 9:13

sqrt() function strange behavouir

2-Mar-13 9:13

I'm afraid that tells us nothing; try looking at the actual class definition or documentation.

Use the best guess

Amrit Agr28-Feb-13 23:44

Re: sqrt() function strange behavouir

28-Feb-13 23:44

hi Developers,

I am trying to get the result of this code

printf( "sqrt(36.0) = %f", sqrt(36.0) );

The mystry is that, If i have include math.h file, than I am getting proper result, bu I haven't, I am getting the result 0.000000

can you please help me out

Thanks
Amrit Agrawal

Richard MacCutchan1-Mar-13 0:56

1-Mar-13 0:56

I just tried without including math.h and it works fine. Try seeing what the actual definition of sqrt is when you have not included the header.

Use the best guess

batch files

Dirquez Marquez20-Feb-13 22:42

20-Feb-13 22:42

Hello y'all...I am want to use IO stream redirection to reuse my previous program to calculate and equation from batch file...Can U help me on how am I to use this io stream to reuse my program

Richard MacCutchan20-Feb-13 22:57

20-Feb-13 22:57

Your question is not very clear, please explain your problem in more detail.

Dirquez Marquez20-Feb-13 23:11

20-Feb-13 23:11

I developed a program to convert celcius to kelvin and one to convert kelvin to Fahrenheit...now what I want to do is convert celcius to Fahrenheit reusing my programs with IO stream redirection,with input and output on batch files...clear?

Richard MacCutchan20-Feb-13 23:53

20-Feb-13 23:53

Why not just do everything in one single program using a class to do the conversions?

Dirquez Marquez21-Feb-13 20:24

21-Feb-13 20:24

aint gonna get an exception error thrown at me for trying different methods am I?but thanks anyway

Richard MacCutchan21-Feb-13 22:36

21-Feb-13 22:36

Dirquez Marquez wrote:
aint gonna get an exception error thrown at me for trying different methods am I?

Dirquez Marquez22-Feb-13 2:58

What is the CLI/C++ equivalent to the C# using statement

22-Feb-13 2:58

never mind its fine thanks

SujayG14-Feb-13 21:54

SujayG

14-Feb-13 21:54

I think there is a specific keyword in CLI/C++ , which is the equivalent to the using keyword in C#.

http://stackoverflow.com/q/338950[^]

Can someone please help ?

My Blog

Re: What is the CLI/C++ equivalent to the C# using statement

John Schroedl15-Feb-13 3:27

John Schroedl

15-Feb-13 3:27

The answer given in that question is correct. There is no C++ keyword equivalent to using() from C# because C++/CLI has deterministic finalization. When the object goes out of scope and there are no more references, it will be disposed.

Structures with using bit fields

Amrit Agr29-Jan-13 1:34

Re: Structures with using bit fields

29-Jan-13 1:34

Hi Developers,

I am trying to run this chunk of code.

struct value
    {
        int bit1:1;
        int bit3:4;
        int bit4:4;
    }bit;
    printf("%d\n", sizeof(bit));

I am getting value "4". I am running this program in 32 bit machine using Microsoft Visual C++ complier.

Can you please clarify about the result.

Richard MacCutchan29-Jan-13 3:38

Re: Structures with using bit fields

29-Jan-13 3:38

You have 9 bits in your field and the default alignment of object code in 32bit architecture is word (32 bit) boundaries. So your structure item will be stored in a 32bit word. You could make it smaller by using a #pragma pack[^] statement.

By the way, this is the managed C++ forum, your questions really belong in http://www.codeproject.com/Forums/1647/C-Cplusplus-MFC.aspx[^].

Amrit Agr17-Feb-13 22:06

sopen() function in filehandling - "C"

17-Feb-13 22:06

Thanks a lot Rechard.. for the clarification

Amrit Agr28-Jan-13 0:56

Re: sopen() function in filehandling - "C"

28-Jan-13 0:56

Hi Developers,

I have read about sopen() function to open a file in shared mode. Here is the code.

XML

#include <stdio.h>
#include <fcntl.h>
#include <sys\stat.h>
#include <io.h>
#include <share.h>
void main(void);
void main(void)
{
int file_handle;
/* Note that sopen() is not ANSI compliant */
file_handle = sopen"D:\\Study\\file.txt", O_RDWR, SH_DENYNO);
close(file_handle);
}

I am getting "-1" on file_handle and program is also getting crash.

Can u please help me out.

John Schroedl28-Jan-13 3:37

John Schroedl

28-Jan-13 3:37

Check the documentation.

A hint: You need to check errno to get the reason for the failure. Compare that result to the items in errno.h (ex. EACCES, EEXIST, etc..).

Re: sopen() function in filehandling - "C"

ramrooney27-Mar-13 7:36

ramrooney

27-Mar-13 7:36

Hi,

This is possible, when the file mentioned is not present in the corresponding path or the file name is wrong you get the file handle as -1.

And its crashing because, you are trying to close a invalid file handle in close() api.

How to call a static libray in a dll?

LongFangFang21-Jan-13 19:38

LongFangFang

21-Jan-13 19:38

How to call a static libray in a dll?

I am using Visual C++ .

3X

heartofdra

Re: How to call a static libray in a dll?

Richard MacCutchan21-Jan-13 22:32