dev-cpp-users Mailing List for Dev-C++

> Obi wrote:
> 
>>         m_listenSocket = socket( AF_INET, SOCK_STREAM, 0 );
> 
> 
> This is not right. Never call socket() with an AF_ argument; it should 
> be PF_ (PF_INET in this case). AF_INET just "works" here by coincidence, 
> because most of the BSD-sockets implementations use the same value for 
> them. This is just as correct as using "socket(2, 1, 0);".
> 

This is not exactly true. The BSD standard says that the AF_ value will 
be the same as PF_ value (this could be found on linux man pages). But 
you are right, the value should be PF_INET because it describes the 
protocol family not the address family.

---
Krzysztof Kapuscik

I viewed the last previous thread about a strtoi function in whihc i =
understand fully
but now i would look to know how to implment a itostr function i.e =
conver an integer to a string
can someone please lead me in the right direction
regards
Rob

Obi wrote:

>         m_listenSocket = socket( AF_INET, SOCK_STREAM, 0 );

This is not right. Never call socket() with an AF_ argument; it should 
be PF_ (PF_INET in this case). AF_INET just "works" here by coincidence, 
because most of the BSD-sockets implementations use the same value for 
them. This is just as correct as using "socket(2, 1, 0);".


Daniel K. O.

Hello
I have installed Dev-C++ 4.9.9.0
I am using windows xp
When I run a program I have wrote
opens the dos window and then it closes.
How can I do that it will stay open after the
program ends to run.
Thank you.

At 02:20 07/11/2004 +0900, Peter Dennis wrote:

>Hi,
>
>Can someone tell me why it is important to fill out a sockaddr structure 
>to 16 bytes.
>
>Reading a book it says that the structure is as follows:
>
>struct sockaddr {
>    unsigned short    sa_family;
>    char                     sa_data[14];
>}
>
>Why fill it out to 16 bytes?  Is this a magic number in computers?
>
>If the address family I choose is AF_INET then how do I know that this 
>takes only 2 bytes in the structure?  Is there a way to calculate this?
>How do I know that I need to set sa_data to 14 and not 15?
>
>Any information regarding this would be great.
>
>Many thanks,
>Peter.

socakaddr is a generic structure for all family types used to pass addresses
to functions that don't depend on the family type.

If you use AF_INET you should use the sockaddr_in definition to manipulate
the data.

Use a reinterpret_cast<> to swap between the two defs for the
same in-memory data.

e.g.

         m_listenSocket = socket( AF_INET, SOCK_STREAM, 0 );

         // Bind Socket
         sockaddr_in lsa;
         memset( &lsa, 0, sizeof(lsa) );
         lsa.sin_family          = AF_INET;
         lsa.sin_port            = htons( LISTEN_PORT );
         lsa.sin_addr.s_addr     = htonl( INADDR_ANY );

         SOCKET ls;
         bind( ls, reinterpret_cast<sockaddr*>( &lsa ), sizeof(lsa) );

         // Listen on socket
         listen( ls, QSIZE );


Hope this helps,
O

Hi,

Can someone tell me why it is important to fill out a sockaddr structure 
to 16 bytes.

Reading a book it says that the structure is as follows:

struct sockaddr {
    unsigned short    sa_family;
    char                     sa_data[14];
}

Why fill it out to 16 bytes?  Is this a magic number in computers?

If the address family I choose is AF_INET then how do I know that this 
takes only 2 bytes in the structure?  Is there a way to calculate this?  
How do I know that I need to set sa_data to 14 and not 15?

Any information regarding this would be great.

Many thanks,
Peter.

Justin Fan wrote:
> I can't find mirrors.cfg under the install path \Dev-CPP, and I can't
> find any files contains "PlaneMirrors.com" which is an existent mirror
> in Dev-CPP.
> Would you show me the full path?

something like e.g.:
c:\documents and settings\<your_user_name>\Local Settings\Application Data
if you have 4.9.9.0 you can simply delete the mirrors.cfg file and the 
devpaks.org mirror will show

-- 
Regards,
     Michal

I can't find mirrors.cfg under the install path \Dev-CPP, and I can't
find any files contains "PlaneMirrors.com" which is an existent mirror
in Dev-CPP.
Would you show me the full path?


On Sat, 06 Nov 2004 07:17:33 -0200, Daniel K. O.
<dan...@ya...> wrote:
> Justin Fan wrote:
> 
> >I just read such infos that "Can I download these devpaks using
> >Dev-C++ WebUpdate feature?Upgrade to latest Dev-C++ version (4.9.9.0)
> >and in WebUpdate select devpaks.org as a mirror." on the devpak
> >webpage. But I can't find where can I do it, I can't find somewhere to
> >add mirror to list. does anyone know?
> >
> >
> 
> Open the "mirrors.cfg" file and add this line:
> 
> devpaks.org=http://devpaks.org
> 
> 
> Daniel K. O.
> 
> 


-- 
Thanks
Z.J.

Justin Fan wrote:

>I just read such infos that "Can I download these devpaks using
>Dev-C++ WebUpdate feature?Upgrade to latest Dev-C++ version (4.9.9.0)
>and in WebUpdate select devpaks.org as a mirror." on the devpak
>webpage. But I can't find where can I do it, I can't find somewhere to
>add mirror to list. does anyone know?
>  
>

Open the "mirrors.cfg" file and add this line:

devpaks.org=http://devpaks.org



Daniel K. O.

> Aloha from Honolulu,
>    I'm just beggining with a wxWidgets installation and some issues are
> puzzelling me: the installation notes say to alter the WXWIN environment
> variable.  Can somebody tell me what that is?
>    The notes also say to use only forward slashes / to designate 
> directories and sub-directories (from my MSDOS days I still call 'em
> that), I think that only applies within certain files or the WXWIN 
> environment variable since windows (I'm using WinXP Pro) has always used
> back slashes \ in directory commands and when displaying same.  Can 
> somebody help clear this up a bit?
> Mahalo (Thank You),

To cut a long story short I would suggest you download wxDevCpp
http://wxdsgn.sourceforge.net/ which is a version of DevCpp with
wxwidgets already included. It also has a simple form designer, and is
compatible with wxWidgets 2.5.3 (it has the UpCase devPak included in
the distribution.

Doing this saves alot of time and headaches.

Best
Mal

Aloha from Honolulu,
   I'm just beggining with a wxWidgets installation and some issues are 
puzzelling me: the installation notes say to alter the WXWIN environment 
variable.  Can somebody tell me what that is?
   The notes also say to use only forward slashes / to designate 
directories and sub-directories (from my MSDOS days I still call 'em 
that), I think that only applies within certain files or the WXWIN 
environment variable since windows (I'm using WinXP Pro) has always used 
back slashes \ in directory commands and when displaying same.  Can 
somebody help clear this up a bit?
Mahalo (Thank You),
Roger Furer

Hey Guys!
This is my frist post (wow)
I've been trying to code a service using Dev-Cpp and as any
good-boy rookie I started at the tutorials. I tried the
following Example code, and though it compiled ok, the
StartServiceCtrlDispatcher() function kept on returning
error 1066 (which is "service exited with a specific error
code"), and the ServiceMain() function never started..
Can any of you guys give me hand ?
here is the source

// Test Service
#include <windows.h>
#include <stdio.h>
#define SLEEP_TIME 5000
#define LOGFILE "c:\memstatus.txt"
SERVICE_STATUS ServiceStatus;
SERVICE_STATUS_HANDLE hStatus;

void  ServiceMain(int argc, char** argv);
void  ControlHandler(DWORD request);
int InitService();
int WriteToLog(char* str)
{
 FILE* log;
 log =3D fopen(LOGFILE, "a+");
 if (log =3D=3D NULL)
  return -1;
 fprintf(log, "%s\n", str);
 fclose(log);
 return 0;
}
int main()
{   WriteToLog("\nApp Starting");
    SERVICE_TABLE_ENTRY ServiceTable[2];
    ServiceTable[0].lpServiceName =3D "MemoryStatus";
    ServiceTable[0].lpServiceProc =3D
(LPSERVICE_MAIN_FUNCTION)ServiceMain;
    ServiceTable[1].lpServiceName =3D NULL;
    ServiceTable[1].lpServiceProc =3D NULL;
    // Start the control dispatcher thread for our service
    StartServiceCtrlDispatcher(ServiceTable);
    WriteToLog("\nApp Ending");
}

void ServiceMain(int argc, char** argv)
{   WriteToLog("Entering ServiceMain");
    int error;

    ServiceStatus.dwServiceType        =3D
SERVICE_WIN32_OWN_PROCESS ;
    ServiceStatus.dwCurrentState       =3D
SERVICE_START_PENDING;
    ServiceStatus.dwControlsAccepted   =3D SERVICE_ACCEPT_STOP
| SERVICE_ACCEPT_SHUTDOWN;
    ServiceStatus.dwWin32ExitCode      =3D 0;
    ServiceStatus.dwServiceSpecificExitCode =3D 0;
    ServiceStatus.dwCheckPoint         =3D 0;
    ServiceStatus.dwWaitHint           =3D 0;

    hStatus =3D RegisterServiceCtrlHandler(
  "MemoryStatus",
  (LPHANDLER_FUNCTION)ControlHandler);
    if (hStatus =3D=3D (SERVICE_STATUS_HANDLE)0)
    {
        // Registering Control Handler failed
        return;
    }
    // Initialize Service
    error =3D InitService();
    if (error)
    {

        ServiceStatus.dwCurrentState       =3D
SERVICE_STOPPED;
        ServiceStatus.dwWin32ExitCode      =3D -1;
        SetServiceStatus(hStatus, &ServiceStatus);
        return;
    }
    // We report the running status to SCM.
    ServiceStatus.dwCurrentState =3D SERVICE_RUNNING;
    SetServiceStatus (hStatus, &ServiceStatus);

    MEMORYSTATUS memory;
    // The worker loop of a service
    while (ServiceStatus.dwCurrentState =3D=3D SERVICE_RUNNING)
 {
  char buffer[16];
  GlobalMemoryStatus(&memory);
  sprintf(buffer, "%d", memory.dwAvailPhys);
  int result =3D WriteToLog(buffer);
  if (result)
  {
   ServiceStatus.dwCurrentState       =3D SERVICE_STOPPED;
   ServiceStatus.dwWin32ExitCode      =3D -1;
   SetServiceStatus(hStatus, &ServiceStatus);
   return;
  }
  Sleep(SLEEP_TIME);
 }
    return;
}

// Service initialization
int InitService()
{
    int result;
    result =3D WriteToLog("Monitoring started.");
    return(result);
}
// Control handler function
void ControlHandler(DWORD request)
{
    switch(request)
    {
        case SERVICE_CONTROL_STOP:
             WriteToLog("Monitoring stopped.");
            ServiceStatus.dwWin32ExitCode =3D 0;
            ServiceStatus.dwCurrentState  =3D SERVICE_STOPPED;
            SetServiceStatus (hStatus, &ServiceStatus);
            return;

        case SERVICE_CONTROL_SHUTDOWN:
            WriteToLog("Monitoring stopped.");
            ServiceStatus.dwWin32ExitCode =3D 0;
            ServiceStatus.dwCurrentState  =3D SERVICE_STOPPED;
            SetServiceStatus (hStatus, &ServiceStatus);
            return;

        default:
            break;
    }

    // Report current status
    SetServiceStatus (hStatus,  &ServiceStatus);

    return;
}</br>-----------------------------</br>
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