Activex control - C / C++ / MFC Discussion Boards

64 bit Crc Polynomial ?

Nibu babu thomas20-Jul-06 23:12

Nibu babu thomas

20-Jul-06 23:12

Does somebody know of a 64 bit Crc polynomial?

Thanks in advance.

Nibu thomas
A Developer

Programming tips[^] My site[^]

Re: 64 bit Crc Polynomial ?

Programm3r20-Jul-06 23:27

Programm3r

20-Jul-06 23:27

Hi, I dont have code for a 64 bit crc, but maybe this crc16 might help you.
Hope it will help.

Function:

short int crc16(int *pBuf, short int Len, short int InitialCrc){
short int crc=0, i=0;

crc = 0;
for (i = 0; i < Len; i++ ) {
crc = (crc >> 8) | (crc << 8);
crc = crc ^ *pBuf;
crc = crc ^ ((crc & 0xff) >> 4);
crc = crc ^ (crc << 12);
crc = crc ^ ((crc & 0xff) << 5);
pBuf++;
}

return(crc);
}

int main()
{
int *ibuf = new char[len];
short int crc;
Memo1->GetTextBuf(ibuf,len);
crc = crc16(&ibuf[0],len,0);
Edit2->Text = len;
Edit3->Text = IntToHex(crc,4);
delete[] ibuf;
}

Regards Programm3r

Re: 64 bit Crc Polynomial ?

Nibu babu thomas20-Jul-06 23:30

Nibu babu thomas

20-Jul-06 23:30

Programm3r wrote:
Hi, I dont have code for a 64 bit crc, but maybe this crc16 might help you.
Hope it will help.

Thanks. I don't need code for Crc. I just need a widely used 64 bit Crc polynomial. Just like the ones we have for 32 bit Crc's. Smile | :)

Nibu thomas
A Developer

Programming tips[^] My site[^]

Re: 64 bit Crc Polynomial ?

Programm3r20-Jul-06 23:35

Programm3r

20-Jul-06 23:35

Well in that case .... my bad Laugh | :laugh:

.
Have you tried checcking google?

maybe this will help, if you haven't already checked it out....

http://en.wikipedia.org/wiki/Cyclic_redundancy_check[^]

Programm3r

Re: 64 bit Crc Polynomial ?

Nibu babu thomas20-Jul-06 23:39

Nibu babu thomas

20-Jul-06 23:39

Programm3r wrote:
Well in that case .... my bad .
Have you tried checcking google?

God bless you. I did search google. But these days you should search Wikipedia too. Big Grin | :-D

Just what I wanted.

Nibu thomas
A Developer

Programming tips[^] My site[^]

Re: 64 bit Crc Polynomial ?

Stephen Hewitt20-Jul-06 23:42

Stephen Hewitt

20-Jul-06 23:42

This[^] might help. You can look at the source is you just want to see how it's done.

Steve

Re: 64 bit Crc Polynomial ?

Nibu babu thomas20-Jul-06 23:51

Nibu babu thomas

20-Jul-06 23:51

Stephen Hewitt wrote:
You can look at the source is you just want to see how it's done.

I do get lost trying to find out a proper polynomial myself. I am still lost. That's why I try to go for a widely used polynomial. I will try out that link.

Thank you.

Nibu thomas
A Developer

Programming tips[^] My site[^]

Activex control

sunita ramesh20-Jul-06 23:10

sunita ramesh

20-Jul-06 23:10

Hello all,

I have an Activex Control in vc++ 6.0.It is a player plays cam files.

I have designed in the way that everytime the Activex control opens ,cam file will be downloaded from the server(Download Dialog) and after downloading the download dialog is closed automatically using OnThreadFinished.

LRESULT CHttpDownloadDlg::OnThreadFinished(WPARAM wParam, LPARAM /*lParam*/)<br />
{<br />
		m_bSafeToClose = TRUE;<br />
		m_ctrlAnimate.Stop();<br />
	<br />
	if (m_bAbort)<br />
		EndDialog(IDCANCEL);<br />
	else if (wParam)<br />
	{<br />
		AfxMessageBox(m_sError);<br />
		EndDialog(IDCANCEL);<br />
	}<br />
	else<br />
		EndDialog(IDOK);<br />
	<br />
	return 0L;<br />
}

OnThreadFinished is for closing the dialog after the cam file downloads
fully.

1.Is ther any method to close the dialog while downloading the file.

Help me please and give me ur suggestions.

thanks in advance

Sunita

Re: Activex control

Anilkumar K V21-Jul-06 1:16

Anilkumar K V

21-Jul-06 1:16

Create a dialog having a progress bar. In Its OnInitDialog start a thread to update the progress bar. Set the progress bar initalizations in OnInitDialog. The thread fun must have a infinite loop and setPos fun to update the progress bar.

From downloading thread update the progress bar value using a static variable and use this var to update the bar in Thred fun() and when this value become 100 or like u can call end dialog which will close the progress dialog.

OCX control in an SDI application.

HakunaMatada20-Jul-06 23:09

HakunaMatada

20-Jul-06 23:09

Is there any way I can use an OCX control in an SDI application? I want to use the MSCHRT20.OCX Chart control in my VC++ SDI app so that it can have charting capabilities. Can anyone help?

---
Beer | [beer]

Hakuna-Matada Beer | [beer]

It means no worries for the rest of your days...
It's our problem free, Philosophy
<marquee behavior="alternate" scrollamount="5" scrolldelay="50"> Jig | [Dance]

Re: OCX control in an SDI application.

David Crow21-Jul-06 3:18

David Crow

21-Jul-06 3:18

Hakuna-Matada wrote:
Can anyone help?

So what problem(s) are you having with it?

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

"Judge not by the eye but by the heart." - Native American Proverb

Re: OCX control in an SDI application.

HakunaMatada24-Jul-06 19:11

HakunaMatada

24-Jul-06 19:11

I would like to know how to use an .OCX control in a VC++ SDI application. Any help towards it would be of great help.

Thanks.

---

Hakuna-Matada Beer | [beer]

It means no worries for the rest of your days...
It's our problem free, Philosophy
<marquee behavior="alternate" scrollamount="5" scrolldelay="50"> Jig | [Dance]

Re: OCX control in an SDI application.

David Crow25-Jul-06 3:21

David Crow

25-Jul-06 3:21

Start with:

Project --> Add to Project --> Components and Controls --> Registered ActiveX Controls

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

"Judge not by the eye but by the heart." - Native American Proverb

database in different domains

Marc Soleda20-Jul-06 23:03

Marc Soleda

20-Jul-06 23:03

Hi all,
I'm testing an application that access to a database (at theis moment an Access 2000 db). I've done all the development in my local machine and all worked fine but when I put the db into the server I realized that client application will be on a different domain than the db. How does the connection string change?

Thanks in advance,

Marc Soleda.

... she said you are the perfect stranger she said baby let's keep it like this... Dire Straits

Re: database in different domains

Programm3r20-Jul-06 23:39

Programm3r

20-Jul-06 23:39

Hi,

Stay away from access...

Download MySql:

http://dev.mysql.com/downloads/mysql/4.0.html[^]

Will solve your problems

Programm3r

Re: database in different domains

Marc Soleda21-Jul-06 0:17

Marc Soleda

21-Jul-06 0:17

Good advice. I would stayed away but it's not my choice. I've recoomended others but at this moment I have tot test it in Access.

Isn't there a solution if it's an Access db?

Marc

... she said you are the perfect stranger she said baby let's keep it like this... Dire Straits

Re: database in different domains

Marc Soleda21-Jul-06 0:35

Marc Soleda

21-Jul-06 0:35

Ok. I finally solved just creating the DSN in another way.

Thanks,
MArc.

... she said you are the perfect stranger she said baby let's keep it like this... Dire Straits

GetUserName

see me20-Jul-06 22:50

see me

20-Jul-06 22:50