C / C++ / MFC

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

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

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

How to add open ocuments(in MDI) as tree items?

4-Aug-04 22:24

I have done manual links with ws2_32.lib and mswsock.lib instead of wsock32.lib and manual initialization and it works just fine Smile | :)

thanks

There is no spoon.

mahatma_cis3-Aug-04 23:10

mahatma_cis

3-Aug-04 23:10

Hi In MDI application,to manage the documents,i want to add "list of documents opened as tree items" how can i do this ?Here tree is in instant bar.if i click the tree item corresponding document should be open.
adwance thanks to those who help me.
-Mahatma

Resizing main application window to show just the desired client rectangle

Gem3-Aug-04 22:39

Gem

3-Aug-04 22:39

I play video capture and files using windowless mode in Direct Show.I'd like to show just the video images in the native video sized application window. How can I do this ? Also there is a problem first displaying the file. The captured video or files can not be shown until the main application window is dragged by mouse. How can I update the view in a Doc/view architecture ?

Sincerely
Cem DEMiRKIR

Streams and operation calls

User 8348703-Aug-04 22:01

User 834870

3-Aug-04 22:01

I have a small project that generates XML formatted text on a file. Simple. In my class i create an ofstream that I just stream static text but also text generated from an operation. E.g. m_OFS << "\t\t<OBJECT Name=\"" << WritePart1() << "\">" << endl;

The problem here is that the operation call is evaluated first, then the rest of the statement resulting in an output looking like this:
MyA00000Var <OBJECT Name="0012FE80">

How do get it in the correct order? Of course i can break up the statement into three parts, like:
m_OFS << "\t\t<OBJECT Name=\""; WritePart1(); m_OFS << "\">" << endl;

But I would like to stream everything in a row.
(I hope the html output will look ok)

modified 26-Oct-22 21:01pm.

Re: Streams and operation calls

Antony M Kancidrowski4-Aug-04 1:14

How to using Unicode on controls of VC++ 7

4-Aug-04 1:14

Why not do this

std::string strWritePart = WritePart1();

m_OFS << "\t\t<object Name=\"" << strWritePart << "\">" << endl;

Assuming WritePart1 returns a string

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)

Anonymous3-Aug-04 21:59

Anonymous

3-Aug-04 21:59

I can't use unicode on controls of VC++7. But as i known, VC++ 7 supported unicode. Who can advise me?

Re: How to using Unicode on controls of VC++ 7

RChin3-Aug-04 23:08

RChin

3-Aug-04 23:08

Can you be more specific on the nature of your problem? What does can't use unicode mean? Doesn't the controls work? Or, as a pure guess, the character being shown does not come out correctly?
If it is the latter, you need to ensure that you are using a UNICODE compatible font for display in your control.

I Dream of Absolute Zero

program Crashes ????

zahid_ash3-Aug-04 21:58

zahid_ash

3-Aug-04 21:58

HI .

A main Dialog Class CMainDlg
and child dialog CChildDlg ... and it memeber in mian diloag class m_childDlg

CMainDlg ::OnBtnPush()
{
SetTimer ( 22 , 1000 , NULL);
m_childDlg.DoModal();
}

IN On_Timer Event
{
if (nIDEvent == 22 )
{
KillTimer (22);
m_childDlg.CloseWnd();
}
}

in Child dialog Class

CChildDlg::CloseWnd()
{
AfxmessageBox(" helllooooo");
///message box is dispalyed afer timer elaps but
/// after that program crashes n not close the dialog
CDialog::OnOK();
}

Program Crashes on OnOK()

y plz tell me

thanx

Regards.

Re: program Crashes ????

V.4-Aug-04 0:21

4-Aug-04 0:21

My guess would be that OnOK calls the closewindow function also...

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

Re: program Crashes ????

Antony M Kancidrowski4-Aug-04 1:04