Re: Another question to threads - C / C++ / MFC Discussion Boards

pubududilena17-Jan-05 22:57

17-Jan-05 22:57

hi all,
I am using SQLConfigDataSource(HWND hwndParent,UINT fRequest, LPCSTR lpszDriver, LPCSTR lpszAttributes) Method to configure the ODBC datasource..

The Problem is I have used the above Method Like this:-
SQLConfigDataSource(NULL,ODBC_ADD_DSN, "SQL Server\0","DSN=myfinger\0" "Server=SERVER\0" "Database=emp\0");
This working perfectly and create the DSN..
Now I want to give the DSN ,server ,Database Name as variables..

But when I create create Like this This is not working..
CString var4,v1,v2,v3;
v1="myfinger";
v2="SERVER";
v3="emp";

var4.Format(" \"DSN=%s\0\" \"Server=%s\0\" \"Database=%s\0\" ",v1,v2,v3);

SQLConfigDataSource(NULL,ODBC_ADD_DSN, "SQL Server\0",var4);
But No error When compilling the Program..But Not creating the DSN..

So please any know the correct way to show this please send me a reply...
Thanks in advance..

Re: I have a Serious Problem

David Crow18-Jan-05 4:17

David Crow

18-Jan-05 4:17

There is no need to put the extra \0 characters in the string. CString::Format() does not like them. Looking at var4 after calling Format() would have confirmed this.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Re: I have a Serious Problem

Blake Miller18-Jan-05 4:41

Blake Miller

18-Jan-05 4:41

Also, when you have a variable number of arguments, which follow a formatting type string, the compiler does not necessaily know what to types to cast the arguments into, so you should probably always cast the CString manually in such a situation. I always do and boy have the wierdness factors decreased.

So, it would like something like this, following mine and David's suggestions:

var4.Format(" \"DSN=%s\" \"Server=%s\" \"Database=%s\" ",(LPCTSTR)v1, (LPCTSTR)v2, (LPCTSTR)v3);

Re: I have a Serious Problem

pubududilena18-Jan-05 15:14

pubududilena

18-Jan-05 15:14

hi ,
Sorry that is also not working..
Compilling the Project perfectly..But Not creating the DSN..
If I used the Method like this:
SQLConfigDataSource(NULL,ODBC_ADD_DSN, "SQL Server\0","DSN=myfinger\0" "Server=SERVER\0" "Database=emp\0");
This working perfectly and create the DSN..
This is working ...
But I want to pass the values for DSN,Server and Database/b>

please help...

Re: I have a Serious Problem

Blake Miller19-Jan-05 4:13

Blake Miller

19-Jan-05 4:13

SQLConfigDataSource -> lpszAttributes
List of attributes in the form "keyname=value". These strings are separated by null terminators with two consecutive null terminators at the end of the list.

Try this instead:

CString var4, v1, v2, v3;<br />
<br />
v1 = "myfinger";<br />
v2 = "SERVER";<br />
v3 = "emp";<br />
<br />
// this generates paramaters separated by a single NUL character <br />
// and a sting terminated with two NUL characters<br />
var4.Format("DSN=%s\0Server=%s\0Database=%s\0", (LPCTSTR)v1, (LPCTSTR)v2, (LPCTSTR)v3);<br />
<br />
SQLConfigDataSource(NULL, ODBC_ADD_DSN, "SQL Server", (LPCTSTR)var4);

I think this will work for you.

Re: I have a Serious Problem

pubududilena19-Jan-05 21:06

pubududilena

19-Jan-05 21:06

hi,
Thanks for ur reply..But it is also not working..You can also try to create DSN using above ur code:

void testDlg::OnButton2()
{
CString var4, v1, v2, v3;

v1 = "myfinger";
v2 = "SERVER";
v3 = "emp";

// this generates paramaters separated by a single NUL character
// and a sting terminated with two NUL characters
var4.Format("DSN=%s\0Server=%s\0Database=%s\0", (LPCTSTR)v1, (LPCTSTR)v2, (LPCTSTR)v3);

if(!SQLConfigDataSource(NULL, ODBC_ADD_DSN, "SQL Server\0", (LPCTSTR)var4))
AfxMessageBox("error");

}
But I got Error for this..

Thanks in advance..

Another question to threads

doneirik17-Jan-05 22:49

doneirik

17-Jan-05 22:49

I have created a separate thread to continuously monitor the serial port (i.e. to wait for something to arrive and then read it out)

Is it possible to write to the serial port at the same time (in the main thread), or does the read thread block. I have tried...it didn´t work, but the problem might be somewhere else...
If I cannot send while monitoring the port, what would be the proper solution? Do I have to temporarily Suspend, Sleep or Abort the thread while performing the write operation?

doneirik

Re: Another question to threads

Antony M Kancidrowski18-Jan-05 2:34

Antony M Kancidrowski

18-Jan-05 2:34

IIRC you should use overlapped IO for the serial read write.

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 Walliams (Little Britain)

Re: Another question to threads

includeh1018-Jan-05 4:02

includeh10

18-Jan-05 4:02

it is not neccessary to write in a thread - thread is for waiting (reading) events.

before u write, u need to check if writing (sending) buffer is empty - otherwise writing fails.

i have worked for years on your current job.

includeh10

How change the backgound Color of Dialog Form

phijophlip17-Jan-05 21:58

phijophlip

17-Jan-05 21:58

How can I change the background color of dialog form in a MFC application.

can anyone help me regarding this project ?

Philip

Re: How change the backgound Color of Dialog Form

Aamir Butt17-Jan-05 23:08

Aamir Butt

17-Jan-05 23:08

Write an event handler for WM_CTLCOLOR and change the color there.

Found on Bash.org

I'm going to become rich and famous after i invent a device that allows you to stab people in the face over the internet
My Articles

In Conjunction With Mr Bhatt

ThatsAlok18-Jan-05 0:41

ThatsAlok

18-Jan-05 0:41

Here is Small Code that Will Help

HBRUSH CExeCreatorDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) 
{
	HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);
	

	//Check if it Edit Control Return Default Color
	if(nCtlColor ==CTLCOLOR_EDIT)
	{
		return hbr;
	}

	//Return Color for BAck Ground
	::SetTextColor(pDC->GetSafeHdc(),DLGTEXTCOLOR);
	::SetBkColor(pDC->GetSafeHdc(),PUNTO_BGCOLOR);
	hbr=CreateSolidBrush(PUNTO_BGCOLOR);
	return hbr;
}

"I Think this Will Help"
<h5
alok gupta="" <br=""> visit me at http://www.thisisalok.tk

Re: In Conjunction With Mr Bhatt

Aamir Butt18-Jan-05 1:07

Aamir Butt

18-Jan-05 1:07

Hi Alok, I am Butt not Bhatt Smile | :)

. There is a very small difference in spelling but a lot of difference otherwise.

Found on Bash.org

I'm going to become rich and famous after i invent a device that allows you to stab people in the face over the internet
My Articles

Re: In Conjunction With Mr Bhatt

ThatsAlok18-Jan-05 6:45

ThatsAlok

18-Jan-05 6:45

Bro!
Please Don't Mind, there is Nothing Intentional.

Aamir Butt wrote:
there is a very small difference in spelling but a lot of difference otherwise.

Yeah I know the meaning of these two Surnames, I am sorry by heart, If it hurt you.

"I Think this Will Help"
<h5
alok="" gupta="" <br=""> visit me at http://www.thisisalok.tk

Re: In Conjunction With Mr Bhatt

Aamir Butt18-Jan-05 19:19

Aamir Butt

18-Jan-05 19:19

Its OK, no hard feelings Smile | :)

Found on Bash.org

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My Articles

Re: How change the backgound Color of Dialog Form

Aamir Butt18-Jan-05 1:05

Aamir Butt

18-Jan-05 1:05

I have seen the code u sent to me through email. Normally its not a good idea to contact individual person coz if u ask question here, other people can get benefit of it as well.

Well, the problem in that code is that the place where u have checked

if(pWnd->GetDlgCtrlID() == IDD_BGCOLOR_DIALOG)

replace it simply with

if(pWnd == this)

Well, the reason is that you want to change the background color of dialog and GetDlgCtrlID returns the IDs of controls on the dialog not of dialog itself. You can check it simply by the if condition I have written above.

Found on Bash.org

I'm going to become rich and famous after i invent a device that allows you to stab people in the face over the internet
My Articles

Service description???

rdhamija17-Jan-05 21:32

rdhamija

17-Jan-05 21:32

dear all,
OS: Windows XP/2k
I am developing an application running with service. can anybody tell how to add desciption to the service
(i.e in control panel display -> service description)
rohit

Re: Service description???

22491717-Jan-05 23:15

224917

17-Jan-05 23:15

use ChangeServiceConfig2()

eg:

SERVICE_DESCRIPTION sdBuff;<br />
sdBuff.lpDescription = _T("This description is shown by SCM.");<br />
ChangeServiceConfig2(hService, SERVICE_CONFIG_DESCRIPTION, &sdBuff);<br />

suhredayan
There is no spoon.

Re: Service description???

rdhamija17-Jan-05 23:24

rdhamija

17-Jan-05 23:24

thanks!

How to create a new web browser object from an existing object sharing instance ?

Yariv17-Jan-05 21:00

Yariv

17-Jan-05 21:00

Hi,

How do I create a new window from an existing object that shares the original object instance ? I'll explain with an example.

Lets say you used IE to browse to a secure url that requires authorization.
After authorization, creating new window by using menu File->New Window gives you a new window that shares the authorization status. You don't have to login again in the new window.

How do I do it assuming I have CHtmlView ?
Thanks

Regular Expressions

Amit Mulay17-Jan-05 20:33

Amit Mulay

17-Jan-05 20:33

Hi,
Can Anyone please suggest a Regular Expression which can validate an expression like "< 200",
"<= 200",
"> 200" or
">= 200"

Thanks a lot.
Amit

Re: Regular Expressions

User 665817-Jan-05 21:00

User 6658

17-Jan-05 21:00

(>|>=|<|<=)\s?([0-9])+

\1 is the evaluation, \2 the number

Smile | :)

regards

modified 12-Sep-18 21:01pm.

Determine text file or Binary file

mjvalan17-Jan-05 20:25

mjvalan

17-Jan-05 20:25

I want to determine, a file is text file or binary file(file name dosen't have file extension).Is there any API in Windows SDK?

Thanks
MJVALAN

Re: Determine text file or Binary file

basementman18-Jan-05 4:18

basementman

18-Jan-05 4:18

You can open the file, read the contents, and examine the bytes to determine if the file contains any binary data. You can see if the characters are in the normal text range, as well as checking for CR/LF characters.

onwards and upwards...

Re: Determine text file or Binary file

David Crow18-Jan-05 4:21

David Crow

18-Jan-05 4:21

A file is only "text" or "binary" in the context of the application that created it. Historically speaking, if the file contained non-printable characters, it was considered binary. Otherwise, it was considered text.

What exactly is it that you are trying to do?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

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