C / C++ / MFC

Re: XML DOM - getting a child node by name using visual C++

11-Jan-03 21:01

You migh wanna take a look at selectNodes() which uses XSLT to select nodes, very handy.

For example, the following code will select all nodes with the attribute id = "3" and the path /test/yadda.

<code>
	IXMLDOMElement* pElem;

	pDoc->get_documentElement(&pElem);

	IXMLDOMNodeList* resList;

	if(SUCCEEDED(pElem->selectNodes(CComBSTR("/test/yadda[@id = \"3\"]"), &resList)))
	{
		long len;
		if(SUCCEEDED(resList->get_length(&len)))
		{
			for(long n = 0; n < len; n++)
			{
				IXMLDOMNode* pNode;
				resList->get_item(n, &pNode);
				CComBSTR strXml;
				pNode->get_xml(&strXml);
				MessageBox(CString(strXml.m_str));
			}
		}
	}
</code>

"You can stand all night at a redlight anywhere in town, hailing Marys left and right but none of them slow down. I've seen the best of men go past. I don't wanna be the last..."

jbernstein12-Jan-03 19:36

jbernstein

12-Jan-03 19:36

Thanks. Is there a way to do it without usitng the attribute?. I want to get the child using only the name and I still don't have a way to do it.

Re: XML DOM - getting a child node by name using visual C++

Joan M12-Jan-03 21:57

Joan M

12-Jan-03 21:57

nodelist = xmldoc->GetElementsByTagName("name");

hope this helps...

Re: XML DOM - getting a child node by name using visual C++

jbernstein13-Jan-03 0:58

jbernstein

13-Jan-03 0:58

Thanks, but it doe's not help.
I would like to find in the nodelist ( returned from the call nodelist = xmldoc->GetElementsByTagName("name");) a child with the name "name1" which I don't know how to get from a node in the list.
Another solution? Thanks.

Re: XML DOM - getting a child node by name using visual C++

Stefan Pedersen13-Jan-03 1:24

Web Server in Router Network

13-Jan-03 1:24

Just remove the attribute, i.e. "/test/yadda"

"You can stand all night at a redlight anywhere in town, hailing Marys left and right but none of them slow down. I've seen the best of men go past. I don't wanna be the last..."

Aidman11-Jan-03 18:52

Aidman

11-Jan-03 18:52

Hi all,

I am writing my own HTTP web server that is suppose to be runnig on a computer in a network that is connected to the internet througth a router.
Now the router has been configed to send any HTTP protocal messages to the
computer with the web server. But when I try to connect to the web server througth the routers internet IP from the same computer running the server it fails to connect. Now I think that you arn't suppose to be able to connect to a local web server througth a internet ip, am I right? But then how can I test that my web server works on the internet and what about FTP servers? Any ideas on how to test if the server works with the same computer running it, without connecting to it througth it's local IP?

Aidman » over and out

Questions about COleCurrency

Abin11-Jan-03 15:30

Abin

11-Jan-03 15:30

Hi guys, I'm writing a program using database, there are some fields should be currency data type, so I used COleCurrency... but I got some problems/questions(never used COleCurrency before):

1, How do you handle negative currency value?

For example, I have a variable with value COleCurrency(0, 0), now I have to further deduct it, so its negative. And now if I want to divide it by a DWORD, its value messed up.

COleCurrency init(0, 0); // initial value is 0.00
COleCurrency refund = blahblah; // some value determined at runtime
init -= refund; // remaining value, it's negative
DWORD dwQty = 500;
COleCurrency unitPrice = init / dwQty; // now value of init becomes a mess

My observation: we cannot divide a negative COleCurrency value?

2, How do you use "SUM" to get sum of currency format field values from a table in database?

I used the following SQL to access the sum value of "dPrice" column, which is in currency format, and the table name is tblDStorage:

"SELECT SUM (dPrice) AS total_price FROM tblDStorage"

Now, on one of my PC it worked well but on another the result is always 0. Why? Both machines have same softwares installed.

3, Can you use double instead of currency to store currency values in database, if no, what's the downside of doing so, and in what case we may loss precision?

I've actually tried to use double, and all problems are gone and there has been no data loss found, but I was told that currency would be more precise for sure...

Thanks a lot for your time.

I do not want to save NULL into a file.

Tomohiro11-Jan-03 15:02

Tomohiro

11-Jan-03 15:02

hi.

char buf[100];

I want to save the buffer on the file.
say, first 87 array has a character but left over has NULL.

so when I save it, also save NULL value into the file.

fputs(buf,fp);

How can I save just 87 character into the file??
thanks Big Grin | :-D

Christian Graus11-Jan-03 15:23

Christian Graus

11-Jan-03 15:23

Tomohiro wrote:
How can I save just 87 character into the file??

By using C++ instead of C. If you used an ofstream, even if you use a C style string instead of std::string, it will stream only the 87 characters you are after.

Christian

No offense, but I don't really want to encourage the creation of another VB developer.
- Larry Antram 22 Oct 2002

C# will attract all comers, where VB is for IT Journalists and managers - Michael
P Butler 05-12-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not
as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

C^hris L^osinger11-Jan-03 16:19

C^hris L^osinger

11-Jan-03 16:19

fprintf

-c

I'm not the droid you're looking for.

ThumbNailer

Tomohiro11-Jan-03 16:50

Tomohiro

11-Jan-03 16:50

for(int i=0;i

Ben Burnett12-Jan-03 17:14

Ben Burnett

12-Jan-03 17:14

Tomohiro wrote:
for(int i=0;i fprintf(fp,"%c",buf[i]);
}

wouldn't it be easier to do: fprintf(fp,"%s",buf)?

cheers,
-B

Standard HTTP Characters :: Winsock

David Chamberlain13-Jan-03 4:01

David Chamberlain

13-Jan-03 4:01

You can also try fwrite, and specify that you want 87 elements each of size 1.

Dave

"You can say that again." -- Dept. of Redundancy Dept.

valikac11-Jan-03 11:50

valikac

11-Jan-03 11:50

Hi.

I am working with HTTP 1.1. I would like to know what other characters such as alpha and punctuactions are allowed for a given URL?

For example:

// Valid
http://www.oiahsdifh.com/aoihsdofhad_jalsdif-joihasdf/theFile.file

// Is this valid?
www.oiahsdifh.com/aoihsdofhad!jalsdif{joihasdf/theFile|file

The project deals with HTTP and websites links. Thus, I need to know the standard and pattern to which servers and clients communicate.

Thanks,
Kuphryn

Re: Standard HTTP Characters :: Winsock

Stefan Pedersen11-Jan-03 12:18

Re: Standard HTTP Characters :: Winsock

11-Jan-03 12:18

Check http://www.ietf.org/rfc/rfc2616.txt[^]

"You can stand all night at a redlight anywhere in town, hailing Marys left and right but none of them slow down. I've seen the best of men go past. I don't wanna be the last..."

valikac11-Jan-03 12:26

valikac

11-Jan-03 12:26

Okay. Thanks.

Kuphryn

Template classes in VS

jparsons11-Jan-03 10:45

11-Jan-03 10:45

I added a template class to one of my projects and none of the methods that I defined are showing up in the class view. Everything compiles cleanly with no errors and I've included all of the proper header files but only data members show up. I know I'm missing something simple. Any suggestions?

Jared
jparsons@jparsons.org
www.prism.gatech.edu/~gte477n

Christian Graus11-Jan-03 12:00

Christian Graus

11-Jan-03 12:00

Are they public ? Why are you exposing your data members ? Does the code compile, even though class wizard is broken ?

Christian

No offense, but I don't really want to encourage the creation of another VB developer.
- Larry Antram 22 Oct 2002

C# will attract all comers, where VB is for IT Journalists and managers - Michael
P Butler 05-12-2002

Again, you can screw up a C/C++ program just as easily as a VB program. OK, maybe not
as easily, but it's certainly doable. - Jamie Nordmeyer - 15-Nov-2002

jparsons11-Jan-03 13:22

11-Jan-03 13:22

All of the methods are public. The data members are protected but they show up in the class view correctly. I've done a complete rebuild and it has no errors or warnings.

Jared
jparsons@jparsons.org
www.prism.gatech.edu/~gte477n

Abin11-Jan-03 15:08

Abin

11-Jan-03 15:08

If you are using VC++ 6, yes, that is the case. For any template classes, only member data and inline methods will show up in class-view or auto-completion menus, and no, there is no solution, a future patch from Microsoft is our only hope.

jparsons12-Jan-03 9:56

12-Jan-03 9:56

Thanks for your reply.

Maybe I'll just make all of hte functions inline so that I can see the auto-complete.

I did have some limited success with two of my methods showing up. Neither of them were inline, but one of htem had default parameters and the other was an overload. As long as I left one of them with a default parameter both would show up in the auto-complete menu.

Jared
jparsons@jparsons.org
www.prism.gatech.edu/~gte477n

jparsons12-Jan-03 16:03

a must have a solution Registry problem !!

12-Jan-03 16:03

I added AFX_INLINE to all of the methods in the file and that fixed the problem. Is there any logic behind this, or is it just and oddity?

Jared
jparsons@jparsons.org
www.prism.gatech.edu/~gte477n

Hesham Amin11-Jan-03 10:35

Hesham Amin

11-Jan-03 10:35

Hi all..
I cerate an application that stores some user-specific data in the registry..
So I use a registry path like this:

HKEY_CURRENT_USER\SOFTWARE\MyCompanyName\Myproduct\UserInfo

So every user logs in can have his pesonalized settings..

The Problem:

When a user uninstalles the application I will be able to remove only that user's data only .. but How can I have access to other users data to remove it as well ?

Re: a must have a solution Registry problem !!

Stefan Pedersen11-Jan-03 12:07