Re: want to take hex dump of a string. How ? - C / C++ / MFC Discussion Boards

Re: Modal, Modeless Dialog Box Problem

Cedric Moonen12-Oct-08 21:57

Cedric Moonen

12-Oct-08 21:57

Why don't you use a modal dialog box instead of a modeless ?

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: Modal, Modeless Dialog Box Problem

Dhiraj kumar Saini12-Oct-08 22:34

Dhiraj kumar Saini

12-Oct-08 22:34

Can u tell me how to use modal dialog box instead o modeless dialog

Re: Modal, Modeless Dialog Box Problem

Cedric Moonen12-Oct-08 23:15

Cedric Moonen

12-Oct-08 23:15

If you don't know how to create a modal dialog box, I think you REALLY need a good book about MFC, because this is really the basics. Take a look at the DoModal function (if I remember correctly, people have already suggested that earlier, so why didn't you do it ?)

Cédric Moonen
Software developer

Charting control [v1.5]
OpenGL game tutorial in C++

Re: Modal, Modeless Dialog Box Problem

_AnsHUMAN_ 12-Oct-08 21:59

_AnsHUMAN_

12-Oct-08 21:59

You have to create a modal dialog box. See the literature for DoModal()

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: Modal, Modeless Dialog Box Problem

SandipG 12-Oct-08 22:45

SandipG

12-Oct-08 22:45

I suggest to read some good book for learning MFC.
For your current issue check this link Tutorial MFC Dialog Boxes[^]
I hope it helps.

Regards,
Sandip.

DDX control type variable in a dialogbar

ilgale12-Oct-08 21:35

ilgale

12-Oct-08 21:35

I've problem using DDX variables for controls in a dialogbar.
In VC6 it was possible to associate a DDX variable (control type)
to a control being part of a dialog bar. In that way, I could
perform an override of some control's functionalities using
a MyClass instead of the tipical control class.
So... in VC6 there was no differences between Dialogs and DialogBars
with DDX controls.
Now I work in Visual Studio 2008. It seems that I cannot create
a DDX variable (control type) for a control being part of a dialog bar.
Is it true ?
If I force it using Attach and Detach methods, it still doesn't work
(MyClass instance doesn't receive Windows messages sent to the control).

How can I specialize the behaviuor of a control being part of a dialog
bar in Visual Studio 2008 ?

Thanks

want to take hex dump of a string. How ?

Sakthiu12-Oct-08 21:25

Sakthiu

12-Oct-08 21:25

Hi,

I want to take hex dump of a string and print like "00.ff.2e:3f:00:4d". Is there any api available in 'C' or 'C++' ?

Thanks,
Sakthi

Nice things do nice works

Re: want to take hex dump of a string. How ?

CPallini12-Oct-08 21:30

CPallini

12-Oct-08 21:30

Well, there are keywords & functions, for instance: strlen, for, printf. Roll eyes | :rolleyes:

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: want to take hex dump of a string. How ?

enhzflep12-Oct-08 21:35

enhzflep

12-Oct-08 21:35

Code:
printf("%02d:%02d:%02d:%02d:%02d:%02d\n", 0x00, 0xff, 0x2e, 0x3f, 0x00, 0x4d);
printf("%02x:%02x:%02x:%02x:%02x:%02x\n", 0x00, 0xff, 0x2e, 0x3f, 0x00, 0x4d);

Output:
00:255:46:63:00:77
00:ff:2e:3f:00:4d

Re: want to take hex dump of a string. How ?

Sakthiu12-Oct-08 22:02

Sakthiu

12-Oct-08 22:02

for me, why happens like this below,

ffffffde:0e:6e:28:53:3d:ffffff88:0d:ffffff87:ffffffc1:ffffffe7:
4f:ffffffe8:ffffff9d:ffffff84:ffffffe8:3d:06:ffffff81:ffffffe0:
ffffff8f:ffffff9a:77:08:75:3d:fffffff1:38:45:ffffff8f:ffffffe8:
ffffffad:03

Thanks,
Sakthi

Nice things do nice works

Re: want to take hex dump of a string. How ?

CPallini12-Oct-08 22:26

CPallini

12-Oct-08 22:26

Hint: you're probably using signed data types. Roll eyes | :rolleyes:

Hint2: FFFFFFDE is -34 (i.e. 222 if unsigned char).
Smile | :)

which should use pipe or socket at Client-server

singh_nav12-Oct-08 19:36

singh_nav

12-Oct-08 19:36

Hi All,

I am working on a client server application.

I am having a challenge that i have to serve the 250 client concurrently. Each request takes 2-5 second to execute at server side.

For this what should i use 1 PIPE implementation or SOCKET with a queue? and why?
Which performance is better.

Thanks

Re: which should use pipe or socket at Client-server

kcynic12-Oct-08 19:59

kcynic

12-Oct-08 19:59

i think if you have to use udp mode, socket might be better.
otherwise i am afraid pipe is better because you just open and close a connect with every client but there would be more operations for socket.

just my own opinion.

Re: which should use pipe or socket at Client-server

Parthiban12-Oct-08 20:31

Parthiban

12-Oct-08 20:31

hi,

U can use the following arch if u think this better. go with TCP/IP.

1. create one sock which will be in listen mode.
2. once u got a connect request, create one sock and thread dynmically and bind with the requested client. this socket will serve for that client only.

this can be implemented in multithread mode where on thread always listen for client, and each thread will serve for perticular client.

-Parthi

Re: which should use pipe or socket at Client-server

SandipG 12-Oct-08 20:37

SandipG

12-Oct-08 20:37

I will suggest to use IO Completion Ports with sockets.
i will not advise to have 250 threads for 250 clients...
Search CP with IOCP you will get many good articles..
I hope it helps.

Regards,
Sandip.

Re: which should use pipe or socket at Client-server

singh_nav13-Oct-08 19:20

singh_nav

13-Oct-08 19:20

Thanks for the input,

Will it work for the different platform.
I am to create the server for WINDOWS, Linux and MAC.

Thanks

Re: which should use pipe or socket at Client-server

SandipG 13-Oct-08 21:30

SandipG

13-Oct-08 21:30

singh_nav wrote:
I am to create the server for WINDOWS, Linux and MAC.

No..
I dont know anything that will work with all three platforms.
I don't understand why server needs to be built for different platforms.
You can have a server on one platform and you can built clients on different platforms.
Your application might have that requirement but just a opinion.

Regards,
Sandip.

Re: which should use pipe or socket at Client-server

singh_nav14-Oct-08 17:09

singh_nav

14-Oct-08 17:09

thanks,

Actually my application is build for all these platform.
And i want to design all code into one application, that time i just need to build at different platform only to support it.

Thanks again

Re: which should use pipe or socket at Client-server

SandipG 20-Oct-08 3:46

SandipG

20-Oct-08 3:46

Recently i came across this library
http://www.alhem.net/Sockets/index.html[^]
I hope it helps.

Regards,
Sandip.

How to get IP address?

monsieur_jj12-Oct-08 19:25

monsieur_jj

12-Oct-08 19:25

Hi all

How do I get my IP address by code? Whats the shortest way possible? I tried getenv but I found out not every computer has their IP add in their environment variables.

Thanks,
Jayjay

Re: How to get IP address?

kcynic12-Oct-08 19:43

kcynic

12-Oct-08 19:43

get host name first and then get the details. The following code might be helpful:

char host_name[128];
hostent* host;
gethostname(host_name,128);
host = gethostbyname(host_name);
printf("The local host: Address : %s\n", inet_ntoa(*(struct in_addr*)host->h_addr));

Regards

Re: How to get IP address?

monsieur_jj12-Oct-08 20:01

monsieur_jj

12-Oct-08 20:01

Hi kcynic,

the gethostname didnt fill up the host_name. Is there a requirement before using your code?

Thanks,
Jayjay

Re: How to get IP address?

kcynic12-Oct-08 20:06

kcynic

12-Oct-08 20:06

did you forget to call WSAStartup？

Re: How to get IP address?

monsieur_jj12-Oct-08 20:17

monsieur_jj

12-Oct-08 20:17

Hi kcynic,

It is working now however there is no h_addr just h_addr_list[0] in the struct of hostent, I still can't find the ipadd. Whats your advise on this?

Thanks,
Jayjay

Re: How to get IP address?

enhzflep12-Oct-08 20:34

enhzflep

12-Oct-08 20:34

Hmm, interesting.

With the following code compiled and linked with wsock32, I get an output of
Hostname: xpDesktop
The local host: Address : 210.84.23.xxx
Press any key to continue . . .

#include <windows.h>
#include <winsock2.h>
#include <stdio.h>

int main()
{
    char host_name[128];
    hostent* host;
    WORD verRequested = MAKEWORD(1,1), err; // version 1.1
    WSADATA wsaData;
    err = WSAStartup(verRequested, &wsaData);
    gethostname(host_name,128);
    printf("Hostname: %s\n", host_name);
    host = gethostbyname(host_name);
    printf("The local host: Address : %s\n", inet_ntoa(*(struct in_addr*)host->h_addr));
    WSACleanup();
    system("pause");
}

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