C / C++ / MFC

7-May-07 3:23

prathuraj wrote:
when i move a tab key the static control does not show the tab key movement.

By design. The static control does not take input, so tabbing through the controls will never stop on a static control.

(I assume you mean static control, not button control?)

C2065 Error

subramanyeswari7-May-07 2:16

7-May-07 2:16

Hi,

I tried to build an MFC dll(originally written VC++ 6.0) to VC++2005. I am getting the folloing error Error error C2065: 'abuf' : undeclared identifier.

The code is as follows:
static void
free_biobuf(abuf)
biobuf *abuf;
{
if(abuf == NULL)
return;
free(abuf) ;
}

What should i do..

Regards, Eswari

toxcct7-May-07 2:20

7-May-07 2:20

this syntax is old C.

i advise you to change the header of your function into this :

static void free_biobuf(biobuf *abuf) {
    //...
}

by the way, you're probably getting the error because you moved the code from a .c file into a .cpp file, didn't you ?

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subramanyeswari7-May-07 22:14

7-May-07 22:14

I built the same dll in debug mode without any changes in the code. The same is not building in release mode. What could be the reason. Any help in this will be appreciated.

Regards, Eswari

toxcct8-May-07 0:23

8-May-07 0:23

have you made the code modification i gave you ?

how do you know it's not working in release mode ? getting an error ? when ? what is it ?

i cannot help if you don't provide infos, hey !

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subramanyeswari8-May-07 3:53

8-May-07 3:53

Sorry for not giving clear picture.

I made the code change as you suggested. It worked. I mean that compiler error is gone. But it is giving other compiler errors.

In debug mode i did not get any compilers which i am getting in release mode(including the one i posted yesterday. not a single compiler error). I am getting 996 errors in release mode.

What should i do.

toxcct8-May-07 3:57

8-May-07 3:57

so as i said, i cannot guess what's wrong unless you provide relevant infos...

what are the first errors ?

have you tried to do a rebuild all ?

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subramanyeswari8-May-07 19:08

8-May-07 19:08

Hi,
The first error is c2065 error (the one i posted). I made changes in the code as you said. It worked. But now i am getting C2079 error for the line
static struct xdr_ops xdrposix_ops;

and C2197 error for the line
return (XDR_PUTLONG(xdrs, (long *)fp));

Where XDR_PUTLONG definition is like this
#define XDR_PUTLONG(xdrs, longp) \
(*(xdrs)->x_ops->x_putlong)(xdrs, longp)
. Like this i am getting many error. I did a rebuild. Still it did not work.
The same is being built in debug more without any errors.

Regards, Eswari

toxcct8-May-07 21:51

8-May-07 21:51

hey man, are you stupid, or you just don't to get helped fast ?

if i tell you C2079 and C2197, do you know what error it is exactly ?
i doublt about it. for me, it's the same... and I won't look at the msdn just because you're too lazy to copy past the exact error message from the compiler output Frown | :(

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subramanyeswari9-May-07 2:32

9-May-07 2:32

Sorry.

This is what i am getting
error C2079: 'xdrposix_ops' uses undefined struct 'xdr_ops' for this line
static struct xdr_ops xdrposix_ops in the code.

subramanyeswari9-May-07 2:34

9-May-07 2:34

Also i am getting the following error
error C2440: '=' : cannot convert from 'int (__cdecl *)(NC_string *)' to 'int (__cdecl *)(void)' for this line of coding in the file
xlen_funct = NC_xlen_string ;

where first one is function defined as int (*xlen_funct)() ;

second one is function defined as int NC_xlen_string(NC_string *cdfstr)

Any help is appreciated.

Regards, Eswari

toxcct9-May-07 2:39

how to return const char* in C

9-May-07 2:39

subramanyeswari wrote:
xlen_funct = NC_xlen_string ;

where first one is function defined as int (*xlen_funct)() ;

second one is function defined as int NC_xlen_string(NC_string *cdfstr)

then if the 2 propotypes are different, you cannot assign one to the other...

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sandeepkavade7-May-07 1:56

sandeepkavade

7-May-07 1:56

hi,
i am writting wrapper over C++ functions to call them in C. the problem is with return type const char*. it is compling properly. but it cant find dll entry point for the function.

the function in .h file is
const char* __declspec(dllimport) __stdcall myfunction(par1, par2);

i am using Visual Studio 2005 IDE. when i move mouse cursor over myfunction it shows return type as int.

what is the problem?

Re: how to return const char* in C

toxcct7-May-07 2:00

Re: how to return const char* in C

7-May-07 2:00

huuuuu, a wrapper on C++ functions for C ?

isn't it the opposite that we usually do ?

what kind of functions are you wrapping ?

moreover, you say that the dll entry point is not found. in what is this related to const char* ?

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Hans Dietrich7-May-07 3:19

C++ Ftp Api on Unix [modified]

7-May-07 3:19

You need to specify C linkage instead of C++ linkage. To specify C linkage, use extern "C" for function declarations:

extern "C" const char* __declspec(dllimport) myfunction(par1, par2);

Also, note that the dllimport should be dllexport if you're compiling the DLL project.

To check what is being generated, use the dumpbin command-line utility: dumpbin /exports mydll.dll. You can also use this on .lib file.

Be sure you are pointing to correct lib/dll in your project - otherwise you will waste a lot of time trying to figure out why changes are not showing up.

Best wishes,
Hans

MarcoNedwig7-May-07 1:43

MarcoNedwig

7-May-07 1:43

Hello experts!

Not really a visual C++ question, but can anyone of you show or provide me a ftp interface I can use within a C++ unix program. I found the excellent CFTPClientClasses here on Codeproject, but don't get it compiled without major changes ( which I have no time for) on unix. Destination system is SUN Solaris 9, Forte Developer 7 compiler. Any hint is welcome. Thanks!

-- modified at 9:38 Monday 7th May, 2007

Hans Dietrich7-May-07 1:47

7-May-07 1:47

A while back I saw a C++ FTP class on SourceForge - don't remember the name right now. Try a search.

markkuk7-May-07 3:27

markkuk

7-May-07 3:27

libcurl[^] together with cURLpp[^]

David Crow7-May-07 3:36

David Crow

7-May-07 3:36

MarcoNedwig wrote:
I found the excellent CFTPClientClasses here on Codeproject, but don't get it run on unix.

It compiled, but wouldn't run?

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

MarcoNedwig7-May-07 3:38

MarcoNedwig

7-May-07 3:38

Sorry I wrote it incorrectly. I couldn't compile it with major changes.

David Crow7-May-07 3:52

David Crow

7-May-07 3:52

Ok, so what does CFTPClientClasses() do internally? Does it use a platform-neutral API?

MarcoNedwig wrote:
I couldn't compile it with major changes.

What major changes did you make such that you couldn't compile it?

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

How to change the Text Color of a Group Box??

MarcoNedwig7-May-07 3:54

MarcoNedwig

7-May-07 3:54

It has a platform independent api. You can see the article here :
http://www.codeproject.com/internet/ftpclientclass.asp

narayanagvs7-May-07 1:43

narayanagvs

7-May-07 1:43

Hi,

I need to change the text color of a group box, How to do??
I did as as below

HBRUSH C3DColorCardDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
	HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
	pDC->SetTextColor(EFC_RGB_WHITE);

	if(nCtlColor==CTLCOLOR_STATIC)
	{
		pDC->SetBkMode(TRANSPARENT);
		pDC->SetTextColor(EFC_RGB_WHITE);
		return m_hbrDlgBkGnd;
	}
}

but no use.

Any suggestions would be helpful.

Thanks in Advance

Today is a gift, that's why it is called the present.

Re: How to change the Text Color of a Group Box??

Hans Dietrich7-May-07 1:58