C / C++ / MFC

Re: Process Creation Notification

23-Apr-04 3:49

if they are parent, yes, the child notify its parent when it is created and destryed

TOXCCT >>> GEII power

_Magnus_23-Apr-04 3:53

_Magnus_

23-Apr-04 3:53

You have to write a kernel driver, look att this article
http://www.codeproject.com/threads/ProcMon.asp#xx211519xx[^]

/Magnus

- I don't necessarily agree with everything I say

Lightweight HTML rendering

antareus23-Apr-04 2:55

antareus

23-Apr-04 2:55

Hello CodeProjecters,
I am working on a multi-protocol chat client, and very stuck on what to use for HTML rendering. AIM uses HTML in its profiles, but it doesn't support very much of it: text foreground/background colors, font size and face changes, bold, italics, etc. Everything that a RichEdit supports -- except for a horizontal rule! I would like to avoid additional DLLs -- so QHTM/HTMLayout is out of the question. It is ridiculous how heavyweight the WebBrowser control is, too. Does MSHTML load in like 10 DLLs when you use it?

Now, I can write a HTML parser using Boost's Spirit parser framework library, and then apply those styles to the RichEdit control. I have already done this. However, I do not know what to do for the horizontal rule. I tried using a bunch of _'s, but it looked really ugly -- is there something else I could do? Perhaps owner-draw the control? I know demand for something like this control is very high, so I'd be willing to write an article about it. I just need to support HR's somehow.

Thanks.

Re: Lightweight HTML rendering

Garth J Lancaster23-Apr-04 16:22

Garth J Lancaster

23-Apr-04 16:22

I saw a lightweight HTML renderer in Windows Developers Journal, a long way back - maybe you could rummage through their archives or find someone who subscribes to the CD-Rom

This might also be of interest :-

http://www.codeproject.com/cpp/utf8ostream.asp[^]

Else, and I know you are going to hate me, go the the website for the author of the previous article (Andrew Fedoniouk, http://terrainformatica.com) and check out his offering - but its not source, it might only serve as 'inspiration')

sorry I cant help more .. ps.. just modified this - seems I should have re-read that link, he's just generating html not rendering it - sorry... follow the link to his homepage and look at his tools, anyway ..

'G'

Send to txctt and mailMonty

ChuThaiDuong23-Apr-04 2:25

Re: Send to txctt and mailMonty

23-Apr-04 2:25

Thank a lot

but it's wrong

I have a Class: CPolyBtn
I have a control: Button : IDC_BUTTON1
in MFC ClassWinzard I need :

ControlIDs Type Member
IDC_BUTTON1 CPolyBtn m_polybtn

In Dialog : Add Member Variable. I need:

Variable Type:
Cpolybtn

Help me. Thank alot

Hello

jmkhael23-Apr-04 2:27

jmkhael

23-Apr-04 2:27

CTRL + W
Add member variable
Find and replace

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

How to write a simple socket application(HELP)

Nodoordonotthereisnotry23-Apr-04 2:24

Nodoordonotthereisnotry

23-Apr-04 2:24

Hello, this is probably my first post ever in this forum.

I need your help with writting two simple and small programs that simulate a server and a client running on the same computer(same host). In addition, one pair of client/server would concern TCP(stream sockets) and another that works with UDP(datagram sockets).

The two main classes that would interest me are CAsyncSocket and CSocket. If there is anyone who could show me a very simple code (like an echo application) or provide me a tutorial/link with such programs ,I would be most happy.
Smile | :)

Note that if you're too bored or unwilling to provide code ,I wouldn't mind if you provided me a tutorial on how to build such a program.

Thank you in advance. WTF | :WTF:

Re: How to write a simple socket application(HELP)

jmkhael23-Apr-04 2:28

jmkhael

23-Apr-04 2:28

Check http://www.codeproject.com/internet/[^]

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Re: How to write a simple socket application (long reply)

David Crow23-Apr-04 4:02

David Crow

23-Apr-04 4:02

Here is some server code that listens on port 13:

void main( void )
{
    WSADATA wsaData;
    int rVal;
    SOCKET client;
 
    WSAStartup(MAKEWORD(1, 1), &wsaData);
 
    //create socket
    SOCKET s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
 
    if (s == INVALID_SOCKET)
    {
        fprintf(stderr, "Failed socket()\n");
        WSACleanup();
        return;
    }
 
    SOCKADDR_IN sin, clientaddr;
    sin.sin_family = PF_INET;
    sin.sin_port = htons(13);
    sin.sin_addr.s_addr = INADDR_ANY;
 
    //bind the socket
    rVal = bind(s, (LPSOCKADDR) &sin, sizeof(sin));
    if (rVal == SOCKET_ERROR)
    {
        fprintf(stderr, "Failed bind()\n");
        WSACleanup();
        return;
    }
 
    //get socket to listen 
    rVal = listen(s, 2);
    if (rVal == SOCKET_ERROR)
    {
        fprintf(stderr, "Failed listen()\n");
        WSACleanup();
        return;
    }
 
    for (;; )
    {
        int addrlen = sizeof(clientaddr);
 
        //wait for a client
        client = accept(s, (struct sockaddr *) &clientaddr, &addrlen);
 
        if (client < 0)
            continue;
 
        char *clienthost = inet_ntoa(clientaddr.sin_addr);
        int port = ntohs(clientaddr.sin_port);
 
        fprintf(stderr, "Received request from [%s] on port [%d]\n", clienthost, port);
 
        rVal = send(client, "Have a nice day!", 16, 0);
 
        closesocket(client);
    }
    
    closesocket(s);
}

Here is some client code that requests data from port 13:

void main( void )
{
    WSADATA     rWSAData;
    int         nIndex = 0,
                nResult,
                nBytes;
    SOCKET      rSocket;
    SOCKADDR_IN rSocketAddr;
    char        sBuffer[128];
 
    if (WSAStartup(MAKEWORD(1, 1), &rWSAData) == 0)
    {
        rSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
        if (INVALID_SOCKET != rSocket)
        {
            unsigned long ul = 1;
            nResult = ioctlsocket(rSocket, FIONBIO, (unsigned long *) &ul);
 
            rSocketAddr.sin_family      = AF_INET;
            rSocketAddr.sin_addr.s_addr = inet_addr("127.0.0.1");
            rSocketAddr.sin_port        = htons(13);
 
            nResult = connect(rSocket, (LPSOCKADDR) &rSocketAddr, sizeof(rSocketAddr));
            if (SOCKET_ERROR == nResult && WSAGetLastError() == WSAEWOULDBLOCK)
            {
                timeval tv = {0};
                tv.tv_sec = 5;
                fd_set fdread;
                FD_ZERO(&fdread);
                FD_SET(rSocket, &fdread);
                nResult = select(0, &fdread, NULL, NULL, &tv);
                if (nResult > 0)
                {
                    if (FD_ISSET(rSocket, &fdread) != 0)
                    {
                        nBytes = recv(rSocket, sBuffer, sizeof(sBuffer), 0);
                        if (nBytes > 0)
                        {
                            sBuffer[nBytes] = '\0';
 
                            fprintf(stderr, "Data from %s is ]%s[", inet_ntoa(rSocketAddr.sin_addr), sBuffer);
                        }
                        else
                            fprintf(stderr, "recv() failed.  Error = %lu\n", WSAGetLastError());
                    }
                    else
                        fprintf(stderr, "FD_ISSET() failed.\n");
                }
                else
                {
                    if (0 == nResult)
                        fprintf(stderr, "select() failed.  Timeout\n");
                    else
                        fprintf(stderr, "select() failed.  Error = %lu\n", WSAGetLastError());
                }
            }
            else
                fprintf(stderr, "connect() failed.  Error = %lu\n", WSAGetLastError());
 
            if (closesocket(rSocket) == SOCKET_ERROR)
                fprintf(stderr, "closesocket() failed.  Error = %lu\n", WSAGetLastError());
        }
        else
            fprintf(stderr, "socket() failed.  Error = %lu\n", WSAGetLastError());
 
        nIndex++;
 
        if (WSACleanup() == SOCKET_ERROR)
            fprintf(stderr, "WSACleanup() failed.  Error = %lu\n", WSAGetLastError());
    }
    else
        fprintf(stderr, "WSAStartup() failed.  Error = %lu\n", WSAGetLastError());
}

"The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998)

Re: How to write a simple socket application(HELP)

Mike Dimmick23-Apr-04 5:59

Mike Dimmick

23-Apr-04 5:59

The MFC classes are generally considered to be a bit useless. They're based around the essentially obsolete window-based model. New applications should probably do their communications on a separate thread.

The Winsock Programmer's FAQ[^] is a useful resource.

Stability. What an interesting concept. -- Chris Maunder

Re: How to write a simple socket application(HELP)

Nodoordonotthereisnotry25-Apr-04 20:43

Nodoordonotthereisnotry

25-Apr-04 20:43

Thanks for your help.

detecting CTRL+C

Anonymous23-Apr-04 1:41

Anonymous

23-Apr-04 1:41

Is there another way to detect when a user presses control plus "C" other than the signal command? Thanks.

Re: detecting CTRL+C

Mike Dimmick23-Apr-04 1:47

Mike Dimmick

23-Apr-04 1:47

In a console application, see SetConsoleCtrlHandler. For a Windows application, Ctrl+C doesn't get any special handling - you simply get WM_KEYDOWN, WM_CHAR, WM_KEYUP messages.

Stability. What an interesting concept. -- Chris Maunder

How create a member variable of type (a class)

ChuThaiDuong23-Apr-04 1:36

23-Apr-04 1:36

Sorry My English is very bad.
I start to learn VC++. you help me.
I want to see to create a member variable of type a class ( exam: CPolyBtn) Confused | :confused:

Thank a lot

Hello

Monty²23-Apr-04 2:02

Monty²

23-Apr-04 2:02

if i understand you correctly

//don't forget to include the header file
#include "PolyBtn.h"

class CMySnazzyClass {
public:
CPolyBtn m_polybtn;
};

hope this is what you were asking otherwise i'll be embarrassed Smile | :)

i can't even remember what my point is now, but anyway, i'm correct

Barring unforeseen acts of God and Adminstrators, my server will be up tomorrow. I'm more worried about the Adminstrators.

toxcct23-Apr-04 2:06

23-Apr-04 2:06

as you said, it's not very easy to understand you, but anyway, i've got a little idea of what you want.

that is very simple. When you've designed a class, then you can use it as a nem type (user-defined type). You can so create variables of that types of any kind... globals, variables, members... check this :

<font style="color:blue;">class</font> A {
    <font style="color:green;">// here are the data members of class A...</font>
  <font style="color:blue;">public</font>:
    <font style="color:green;">// here are the function members of the class...</font>
};
 
<font style="color:blue;">class</font> B {
    A m_myAMember;    <font style="color:green;">// you have now defined you A object as a member of B object...</font>
  <font style="color:blue;">public</font>:
    <font style="color:green;">// here are the function members of the class B...</font>
};

hope that was helpful

TOXCCT >>> GEII power

ChuThaiDuong23-Apr-04 2:23

23-Apr-04 2:23

toxcct23-Apr-04 2:35

23-Apr-04 2:35

i'm not sure to understand this time. you want to add a CPolyBtn into a Button control ?
is that is right, you have to override the CButton class, an the add the member :

<font style="color:blue;">class</font> CMyButton : <font style="color:blue;">public</font> CButton {
    CPolyBtn m_polybtn;
  <font style="color:blue;">public</font>:
    <font style="color:green;">// Add your functions here...</font>
};

is that correct ?

TOXCCT >>> GEII power

toxcct23-Apr-04 2:39

23-Apr-04 2:39

oh sorry, i start to understand...

<font style="color:blue;">class</font> CPolyBtn: <font style="color:blue;">public</font> CButton {
    <font style="color:green;">/* Type */</font> m_polybtn;
  <font style="color:blue;">public</font>:
    <font style="color:green;">// Add your functions here...</font>
};

but, what type will be your variable member ?

TOXCCT >>> GEII power

Alton Williams23-Apr-04 4:39

Alton Williams

23-Apr-04 4:39

I think I understand what you saying to us.
What you want to do.

From the way I construe it is he wants to connect IDC_BUTTON1 with m_polybtn of type CPolyBtn.

There are two ways of doing it.

Is to usethe class wizard in the normal way setting IDC_BUTTON1 of type CButton then going to header (*.h) file and replacing CButton with CPolyButton making sure that you add
#include"PloyButton.h" you also get there by using the menu Edit->Find in files type in m_polybtn

You delete the class wizzard (*.clw) file and start again. adding all the files then when you add a variable the CPolyButton will come up this time

I hope you've understood my English.

I'll e-mail you a sample project with and picture explantion

Alton

ChuThaiDuong23-Apr-04 15:06