C / C++ / MFC

Antony M Kancidrowski4-Aug-04 2:59

Antony M Kancidrowski

4-Aug-04 2:59

That's OK! Unsure | :~

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

palbano4-Aug-04 4:59

palbano

4-Aug-04 4:59

yingkou wrote:
I have made a mistaken

Yeah that happens sometimes. I made one back in 1987.

"No matter where you go, there your are." - Buckaroo Banzai

-pete

yingkou4-Aug-04 15:19

yingkou

4-Aug-04 15:19

Sorry to interupt you,it is said that two programs in different computer can communicate by named piped in the book of Programming Application For Windows,
can you tell me the details?

thanks a lot

How to use a external Vfp DLL with VC++

bikram singh5-Aug-04 7:19

bikram singh

5-Aug-04 7:19

yingkou wrote:
can you tell me the details?

Apart from the book, a good source is MSDN.
Also, Google can be a great help.

Bikram Singh
I believe we should all pay our tax with a smile. I tried - but they wanted cash.

paulotharso4-Aug-04 1:42

paulotharso

4-Aug-04 1:42

I have a problem to use a DLL done in Vfp 8 with a code in VC++.

The source codes is below.

The message-> Warning: attempt to call Invoke with NULL m_lpDispatch!

is showed when the canal.processar routine is called.

Somebody can help me????

PauloTharso Smile | :)

ptharso@hotmail.com

***********************teleway.cpp -----------------------------------------------------
#include "stdafx.h"
#include "Teleway.h"
#include "canalfoxdll.h" // Added by ClassView
#include "k3l.h" // Added by Paulo

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
CWinApp theApp; // The one and only application object
using namespace std;

Icanalfoxsrv canal; byte Info[20]; int key;

int32 Kstdcall Processador ( int32 Obj, K3L_EVENT *E ){ cout << "Processando eventos\n";

if (E->ObjectId == koiChannel || E->ObjectId == koiPlayer){
memcpy(Info,(char *)E + 28,E->ParamSize);
key = canal.processar(E->DeviceId,E->ObjectId,E->Code,E->AddInfo,E->ParamSize,(const char *)Info); // chamafox
if(!key) cout << "OK!"; else cout << "Falha no canal: " << E->ObjectId << endl;
}
return TRUE;
}

int _tmain(int argc, TCHAR* argv[], TCHAR* envp[]) { int nRetCode = 0; int check=FALSE;

Icanalfoxsrv * canal = new Icanalfoxsrv;

if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0)){
cerr << _T("Fatal Error: MFC initialization failed") << endl;
nRetCode = 1;
}else{
CString strHello; strHello.LoadString(IDS_HELLO);
cout << (LPCTSTR)strHello << endl;
if (check!=TRUE) { char *Ret = k3lStart();
if (!Ret || !*Ret) k3lRegisterEventHandler( Processador );
check = TRUE;
}
// K3L_EVENT * wrk = new K3L_EVENT ; wrk->Code=1; wrk->ObjectId=1; wrk->ParamSize=8;
// Processador(2,wrk);
}
return nRetCode;
}
***********************canalfoxsrv.dll--------------------------------------------------
DEFINE CLASS canalfoxsrv as Session olepublic

PROCEDURE processar(p as Long,c as Long,e as Long,r as Long,l as Long,a as String ) as Integer
IF p<1 OR c>59 OR c<0 THEN
RETURN 1
ENDIF
INSERT INTO canalfoxtbl (placa,canal,evento,parametro,tamanho,adicional) VALUES (p,c,e,r,l,a)
RETURN 0
ENDPROC

PROCEDURE acionar(o as Long,c as Long, a as String @) as Integer
DECLARE INTEGER k3lSendCommand IN "K3LE1600" as Comandar STRING @
buffer=SPACE(50)
Comandar(@buffer)
RETURN 0
ENDPROC

PROCEDURE init
SET DEFAULT TO "c:\avisual\teleway"
SET DATE TO ANSI
ENDPROC
-----------------------------------------------------------------

handling message on log-on

Anonymous4-Aug-04 1:10

Anonymous

4-Aug-04 1:10

i want to handle the situation when someone logs in to the system. how do i do so?
i know WM_ENDSESSION message is sent when the user logs out. but wat is the message when the user logs in....

Re: handling message on log-on

David Crow4-Aug-04 3:04

David Crow

4-Aug-04 3:04

Short of making your own msgina.dll, I know of no such message. Applications typically don't need to be notified when someone logs in, mainly because they probably aren't running. Services, however, might since they are running regardless of whether someone is logged in or not.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: handling message on log-on

bikram singh5-Aug-04 7:27

bikram singh

5-Aug-04 7:27

WM_STARTSESSION? Smile | :)

Well, Google did give two interesting results (to the same article)...

Bikram Singh
I believe we should all pay our tax with a smile. I tried - but they wanted cash.

Doc/View based app without menu bar

Suresh Chandra M4-Aug-04 0:34

Suresh Chandra M

4-Aug-04 0:34

Hey,

Can any one help me, how I can get Single Doc/View based application without menu bar? I don't want to switch to Dialog based application ......

Thanks for your help!
Suresh Cry | :((

Re: Doc/View based app without menu bar

Michael P Butler4-Aug-04 0:48

Michael P Butler

4-Aug-04 0:48

BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)
{
	if(cs.hMenu!=NULL)
	{
		::DestroyMenu(cs.hMenu);      // delete menu if loaded
		cs.hMenu = NULL;              // no menu for this window
	}


	if( !CFrameWnd::PreCreateWindow(cs) )
		return FALSE;

	return TRUE;
}

Michael

CP Blog [^]

Re: Doc/View based app without menu bar

Suresh Chandra M4-Aug-04 0:52

Suresh Chandra M

4-Aug-04 0:52

Got this! Thanks Big Grin | :-D

Tansfer a string formula from Excel to C++ ??

GAR.J4-Aug-04 0:23

GAR.J

4-Aug-04 0:23

I am using a standard algorithm coded from Visual C++.net
The heart of it is a formula I need to modifyfrom time to time.
As I need flexibility regarding this core formula, I would like to write it in an Excel cell, take the string via VBA and transfer it the heart of my C++ code in order modify calculation inside my algorithm.

It looks like an "uninteresting question" but solving that one could much simplify my daily life...
(How ) Is it possible to do that ? D'Oh! | :doh:

Guillaume

Re: Tansfer a string formula from Excel to C++ ??

palbano4-Aug-04 5:11

palbano

4-Aug-04 5:11

Well you could expose a COM interface as part of your app that is consumable by VBA. That would probably be quite a load of work. Another approach would be to add interfacing with the Excel Object Model from within your app. While that would likely be much less work I cannot tell if it meets the needs of your use model.

Good luck

"No matter where you go, there your are." - Buckaroo Banzai

-pete

No Question, Solution

V.3-Aug-04 23:42

3-Aug-04 23:42

Yesterday (or the day before, I can't remember Wink | ;)

)
I asked how to print a CString (with RTF codes)

Here's the basic solution.
create a 'dummy' CRichEditCtrl.
create a 'dummy' Window to contain this control.
set the RTF text in the CRichEditCtrl.
Print from there.

That's it (hope it's helpful to anybody)!

(PS: not possible to give the code, because it's to hard to strip)

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix

Windows Socket problem

bouli3-Aug-04 23:19

3-Aug-04 23:19

Hi,

I'm new in using windows sockets.
when I try to use windows sockets in my MFC application, I get the error "Could not start WinSock.DLL, error=0x276b".

in the InitInstance method, I have initialized winsock like this:

...
WSADATA    ws;

if (!AfxSocketInit(&ws))
{
return FALSE;
}
...

event if I use the WSAStartup function, I get the messagebox error.

did I forgot to initialize something? Confused | :confused:

thanks for the help.

best regards.

There is no spoon.

Antony M Kancidrowski4-Aug-04 1:02

Antony M Kancidrowski

4-Aug-04 1:02

I have not used AfxSocketInit but the the error it is reporting is

WSAStartup cannot function at this time because the underlying system it uses to provide network services is currently unavailable.

So WSAStartup is failing in both cases.

This is only speculation but you do have a network card in your machine don't you?

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

bouli4-Aug-04 2:01

4-Aug-04 2:01

Hi,

In fact, it's a problem of linking. when I link with ws2_32.lib and mswsock.lib instead of wsock32.lib, it works fine. so it seems that wsock32.lib does not work properly? Confused | :confused:

There is no spoon.

Antony M Kancidrowski4-Aug-04 2:39

Antony M Kancidrowski

4-Aug-04 2:39

If you look at the documentation for WSAStartup it is defined in Winsock2.h and therefore you should link with Ws2_32.lib.

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Anthony_Yio4-Aug-04 1:32

Anthony_Yio

4-Aug-04 1:32

Is it because you do not include link to
"Ws2_32.lib" ?

Sonork 100.41263:Anthony_Yio

bouli4-Aug-04 1:56

4-Aug-04 1:56

Hi,

I have exclude wsock32.lib and included ws2_32.lib in the link properties of the project and I don't get the error message.
But when I create a project that uses Visual C+ 6 with Windows Socket support (this project doesn't have any ws2_32.lib defined, it compiles and runs correctly, and when I create the same project with VS .NET 2003, I have the error I mentionned above Confused | :confused:

Also a project like shareaza have no exclude libraries (like I have done)... it's maybe a problem of linking configuration.

There is no spoon.

Anthony_Yio4-Aug-04 19:48

Anthony_Yio

4-Aug-04 19:48

Try not to be dependent on the wizard but do it manually instead.

The basic winsock initialization.

//initialize winsock
WSADATA wsaData;
int iRet=WSAStartup(0x101,&wsaData);
if(iRet)
return false;

SOCKET con;
con=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
if(con==INVALID_SOCKET)
return false;

//close connection
closesocket(con);
WSACleanup();

and include ws2_32.lib in the link.

Sonork 100.41263:Anthony_Yio

bouli4-Aug-04 22:24