Managed C++/CLI

Cedric Moonen9-Mar-06 20:26

Cedric Moonen

9-Mar-06 20:26

You really think people here will do your homework for you ?
If you want an answer, post specific questions and post what you already did.

cusack10-Mar-06 18:42

cusack

10-Mar-06 18:42

thk for u all...i knw my fault...
i cant do tat like tis...sorry for disturd u all....
very apologize wit it....

toxcct9-Mar-06 23:48

9-Mar-06 23:48

http://www.retacoder.com[^]

V2.1

Trollslayer10-Mar-06 7:44

Trollslayer

10-Mar-06 7:44

http://www.rentacoder.com[^]

The tigress is here Big Grin | :-D

Re: V2.1

toxcct10-Mar-06 22:21

10-Mar-06 22:21

yup, typo... Wink | ;)

Professor Sharada Ulhas10-Mar-06 10:49

Professor Sharada Ulhas

10-Mar-06 10:49

cusack! this is professor ulhas from the university. it told all of student to not cheat by gone to cpian and make others doubt the homework. but here i see u cheating. when i heard of this i wanted to slice my tongue open and a salted knife. that is how much ur cheatin hurts me. now u get black grade and fail. Cry | :((

Sincelery yours, Computer Information conSciences Professor and grader, Sharada Ulhas

cusack10-Mar-06 18:47

cusack

10-Mar-06 18:47

thk for u all...i knw my fault...
i cant do tat like tis...sorry for disturd u all....
very apologize wit it....
im 2 care of my homework...
i scare will fail...i really no idea how 2 done..
whatever,i will take more time to revision all the things...
thk a lot

const char __gc[] to const char []

Saksida Bojan10-Mar-06 19:25

Saksida Bojan

10-Mar-06 19:25

This CP forum is for people who can't continue their work, becase of the problem they can't solve. If you have a problem then ask if you want to other make your program, then don't even ask and start thinking.

Fu Manchu9-Mar-06 14:58

Re: const char __gc[] to const char []

9-Mar-06 14:58

i will not give up, i will convet this if its the last thing i do....

i am getting better though!!

void ManagedReadVoltage::ManagedDAQmxBaseCreateTask(const char taskName __gc[], TaskHandle *taskHandle)
{
DAQmxBaseCreateTask(taskName,taskHandle);
}

i am stuck here, i get this error...

'DAQmxBaseCreateTask' : cannot convert parameter 1 from 'const char __gc[]' to 'const char []'

the orginal code...

void UnmanagedReadVoltage::UnmanagedDAQmxBaseCreateTask(const char taskName[], TaskHandle *taskHandle)
{
DAQmxBaseCreateTask(taskName,taskHandle);
}

i have looked on google, but i can't get it working..anyway i need some sleep Sleepy | :zzz:

thanks

Michael Dunn10-Mar-06 6:47

Michael Dunn

10-Mar-06 6:47

You need to pin the managed array before passing it to a function that's expecting a native array.

--Mike--
Visual C++ MVP Cool | :cool:

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cross-include two classes

shaohao9-Mar-06 4:24

shaohao

9-Mar-06 4:24

Here is the code:

<br />
//file class1.h<br />
#include "class2.h"<br />
<br />
class A<br />
{<br />
public:<br />
  A(void) {}<br />
  ~A(void) { if ( _cls2) delete _cls2; }<br />
public:<br />
  void Create(void) { _cls2 = new B(this); } // pass class itself to class2<br />
  void Display(void) { printf("from A"); }<br />
private:<br />
  B * _cls2;<br />
};<br />
<br />
// file class2.h<br />
#include "class1.h"<br />
<br />
class B<br />
{<br />
public:<br />
  B(A * ptr) : _cls1(ptr) {}<br />
  ~B(void) {}<br />
public:<br />
  void Do(void) { _cls1->Display(); }<br />
private:<br />
  A * _cls1;<br />
};<br />

But I got error on compiling Frown | :(

How to solve it?

toxcct9-Mar-06 4:45

9-Mar-06 4:45

in one of the files, before the definition of the class, declare the other one.

for example :

class A;
 
class B {
    //...
};

shaohao9-Mar-06 5:09

shaohao

9-Mar-06 5:09

You mean combine two .h files into one .h file?

Is it possible to solve it in two .h files?

THX for your quick reply Smile | :)

toxcct9-Mar-06 5:12

9-Mar-06 5:12

shaohao wrote:
You mean combine two .h files into one .h file?

file A.h
 
#include "B.h"
 
class A {
    //...
};

file B.h
 
#include "A.h"
 
class A;
class B {
    //...
};

shaohao10-Mar-06 3:09

shaohao

10-Mar-06 3:09

But I think it should be:

<br />
file A.h<br />
<br />
#include "B.h"<br />
<br />
class A {<br />
    //...<br />
};<br />

<br />
file B.h<br />
<br />
// not include A.h<br />
class A;<br />
<br />
class B {<br />
    //...<br />
};<br />

Any idea?
Is it right?
-- modified at 9:11 Friday 10th March, 2006

help with wrapping this code

georgeraafat10-Mar-06 13:43

georgeraafat

10-Mar-06 13:43

Yes - this is correct. It compiles without a problem.

gmileka

Fu Manchu9-Mar-06 2:18

9-Mar-06 2:18

i thought it would be better to make a new tread for this one.

i am trying to get this code to work, but i don't know what i'm doing wrong..

i know this much....

i have a class library(.net) called fooManaged and its automatical created fooManaged.h. and i created UnManaged.h

in the UnManaged.h file i have this code.....

#include iostream
#include vcclr.h
using namespace std;

class Foo
{
public:
Foo();
~Foo();
void DoSomeFoo();
};

// constructor
Foo::Foo()
{
cout<<"Constructor called!"<<endl;
}
destructor
foo::~foo()=""
{
cout<<"destructor="" called"<<endl;
}

="" some="" method
void="" foo::dosomefoo(void)

{
cout<<"do="" something="" funny!"<<endl;
cout<<"burrrp!"<<endl;
}

in="" foomanaged.h="" i="" have="" this="" code....

="" foomanaged.h

#pragma="" once
using="" namespace="" system;

namespace="" foomanaged
{
public="" __gc="" class="" mfoo
{=""
private:
foo="" *="" _foo;
public:
mfoo();
~mfoo();
void="" manageddosomefoo();
};
="" constructor
mfoo::mfoo()=""
{
_foo="new" foo();
}
="" destructor
mfoo::~mfoo()
{
delete="" _foo;
}

="" mfoo::manageddosomefoo()=""
{
_foo-="">DoSomeFoo();
}

}

the fooManaged.cpp file just has...

#include "stdafx.h"
#include "Unmanagedfoo.h"
#include "fooManaged.h"
#using mscorlib.dll

it all compiles...but there is a big linking error!!

Compiling...
fooManaged.cpp
Linking...
LINK : error LNK2020: unresolved token (0A000005) _CxxThrowException
LINK : error LNK2020: unresolved token (0A000019) free
LINK : error LNK2020: unresolved token (0A00001A) strlen
LINK : error LNK2020: unresolved token (0A00001B) memmove
LINK : error LNK2020: unresolved token (0A00001C) memcpy
LINK : error LNK2020: unresolved token (0A00001D) delete
LINK : fatal error LNK1120: 6 unresolved externals

i must be doing something wrong, some help with this will be very wecome

thanks

Nemanja Trifunovic9-Mar-06 2:43

9-Mar-06 2:43

Add msvcrt.lib to the linker options.

My programming blahblahblah blog. If you ever find anything useful here, please let me know to remove it.

Fu Manchu9-Mar-06 3:24

9-Mar-06 3:24

i dont know how to do that, so i guessed at added msvcrt.lib to the command line in addional options in the linker properties, but i get even more errors!

Nemanja Trifunovic9-Mar-06 3:48

9-Mar-06 3:48

Project's Property Pages dialog box -> Linker->Input. Add msvcrt.lib to the Additional Dependencies.

My programming blahblahblah blog. If you ever find anything useful here, please let me know to remove it.

Fu Manchu9-Mar-06 4:17

Compiling native C files in C++/CLI solution

9-Mar-06 4:17

thanks man, i've done that but i am stil getting errors when linking, just two though...

Linking...
libcpmtd.lib(xdebug.obj) : error LNK2019: unresolved external symbol __malloc_dbg referenced in function "void * __cdecl operator new(unsigned int,struct std::_DebugHeapTag_t const &,char *,int)" (??2@YAPAXIABU_DebugHeapTag_t@std@@PADH@Z)
libcpmtd.lib(_tolower.obj) : error LNK2001: unresolved external symbol __malloc_dbg
libcpmtd.lib(xdebug.obj) : error LNK2019: unresolved external symbol __free_dbg referenced in function "void __cdecl operator delete(void *,struct std::_DebugHeapTag_t const &,char *,int)" (??3@YAXPAXABU_DebugHeapTag_t@std@@PADH@Z)
C:\Documents and Settings\Major Pigeon\My Documents\Visual Studio Projects\fooManaged\Debug\fooManaged.dll : fatal error LNK1120: 2 unresolved externals

Judah Gabriel Himango8-Mar-06 16:10

Judah Gabriel Himango

8-Mar-06 16:10

Ok so I've got my C++/CLI solution, which now includes some old native C files (not C++ files). I don't want these C files to be compiled to managed; I just want to be able to call them from my managed ref classes in my C++/CLI solution. How can I do that? The compiler complains it won't compile .c files with the /clr syntax.

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Lent Revisited
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Judah Himango

Re: Compiling native C files in C++/CLI solution

Nemanja Trifunovic9-Mar-06 1:33

Re: Compiling native C files in C++/CLI solution

9-Mar-06 1:33

Judah Himango wrote:
The compiler complains it won't compile .c files with the /clr syntax.

Yeah, one of "advances" that came with VS2005.

Anyway, try to simply rename the c files to cpp and compile. You may get some compiler errors, but they should not be hard to fix.

My programming blahblahblah blog. If you ever find anything useful here, please let me know to remove it.

Nish Nishant9-Mar-06 2:53

Nish Nishant

9-Mar-06 2:53

Nemanja Trifunovic wrote:
Anyway, try to simply rename the c files to cpp and compile. You may get some compiler errors, but they should not be hard to fix.

Or put the C files into a native DLL and export the required functions out of it.

Regards,
Nish

Nish’s thoughts on MFC, C++/CLI and .NET (my blog)
The Ultimate Grid - The #1 MFC grid out there!

Re: Compiling native C files in C++/CLI solution

Nemanja Trifunovic9-Mar-06 3:50