Re: posting data - C / C++ / MFC Discussion Boards

Re: Connection objects in multithreaded appliations

Laing,James12-Aug-04 12:35

12-Aug-04 12:35

Hi.

Prehaps it would make more sense to have a 'manager' from whom you request access, so that if you require a fourth or more thread(s) then the scaling issue is not a problem.

James.

Re: Connection objects in multithreaded appliations

Antony M Kancidrowski12-Aug-04 12:59

Antony M Kancidrowski

12-Aug-04 12:59

Yes, that is basically what I have with the serialised access. Smile | :)

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 Williams (Little Britain)

Re: Connection objects in multithreaded appliations

mahade112-Aug-04 19:00

mahade1

12-Aug-04 19:00

Thanks for your help.

I still have a small query, What do you generally prefer for connecting to Database, I use the CDatabase object to connect with the SQL server and I am just not able to avoid the deadlocks in both cases, that is single connection object or multiple connection objects.

I seem to be getting this problem when a thread is executing a query and the SQL server goes down.

Any suggestions?

Thanks a lot,
Mahadevan.

#define and Streams

CreepingFeature11-Aug-04 21:20

CreepingFeature

11-Aug-04 21:20

Hi everyone, especialy those nice gents who actualy answer the questions!

( Ladies? Laugh | :laugh:

)

I know that you can #define fileName "myFile.txt" a string in the globals area, and when you need to you can stream.open(fileName) so you wont have to write the file name every time you open a stream.

My question is this can the same logic be used to define the actual stream for example #define ifstream inFileStream so that I wont have to declare the streams inside functions that need to use them. So that the only line relating to a stream in the function would be inFileStream.open(fileName). This should also remove the need to pass the streams to functions since I will be able to open and close them any where any time.

Thanks in advance!

Re: #define and Streams

markkuk12-Aug-04 1:31

markkuk

12-Aug-04 1:31

No. #define causes simple text subsititution before actual compilation. ifstream.open("myFile.txt") isn't valid C++ syntax.

posting data

ozgul11-Aug-04 21:10

ozgul

11-Aug-04 21:10

Hi everybody!

I wan to post some datas to asp page.
How can i do this?Can u give examples?

Please help me!
Thanks...

Re: posting data

Ravi Bhavnani11-Aug-04 21:30

Ravi Bhavnani

11-Aug-04 21:30

This[^] article may help.

/ravi

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com

Re: posting data

Milton Karimbekallil11-Aug-04 21:30

Milton Karimbekallil

11-Aug-04 21:30

this is not the place 2 post this. u shud have done it in asp.net column.
btw what xactly u need, r u a beginr, u just need some data 2 be posted to the asp page on the server? if so <form> - </form> in html will do.

otherwise if u need some data to be posted to an asp page on the server thru a non-explorer client app.. then use the XMLHTTP class provided with msxml.dll. Load ur data into an xml dom, call the open method of xmlhttp by passing the url of the asp page, and finally call the send method of xmlhttp by passing the dom object which loaded with ur data to be posted.

rgds...mil10.

Re: posting data

ozgul11-Aug-04 22:15

ozgul

11-Aug-04 22:15

I have an application that is written vc++.It displays system informations and i want to post this information to asp page, server.
How can i do this? Frown | :(

Thanks...

Re: posting data

Milton Karimbekallil11-Aug-04 23:18

Milton Karimbekallil

11-Aug-04 23:18

ok, then its better u go 4 XMLHTTP. go thru some sample prgms fo xmlhttp methods Open and Send.

rgds..mil10

Re: posting data

mahade112-Aug-04 1:01

mahade1

12-Aug-04 1:01

Hi,

From what I understand you want to send data to an asp page through the query string from a C++ application, right?

If that is the case then use the class CInternetSession. You will find the OpenURL() method of this class useful in sending the data to the asp page through the query string.

Regards,
Mahadevan.

schedule task

Anonymous11-Aug-04 20:46

Anonymous

11-Aug-04 20:46

how does the schedule task in windows work?

Re: schedule task

Ravi Bhavnani11-Aug-04 21:03

Ravi Bhavnani

11-Aug-04 21:03

Clickety[^]

/ravi

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com

on log off

Anonymous11-Aug-04 20:36

Anonymous

11-Aug-04 20:36

what is the signal that goes to all the applications on log off and how do i handle it? whenever the system logs off, all the application gets killed. is there a way so as not to kill the application

Re: on log off

Milton Karimbekallil11-Aug-04 20:57

Milton Karimbekallil

11-Aug-04 20:57

chk out WM_QUERYENDSESSION and WM_ENDSESSION

rgds...mil10

CEditView and XP Manifest

paulb11-Aug-04 20:11

paulb

11-Aug-04 20:11

As soon as I add this line to the resource file:

CREATEPROCESS_MANIFEST_RESOURCE_ID RT_MANIFEST "res\Wcpm.manifest"

as recommended by an MSDN article in order to get XP visual styles, the CEditView in the application starts showing rubbish characters whenever a text file is opened and displayed in it.

All dialog controls and whatnot change to the XP visual style just fine, just this crazy CEditView behaviour also starts happening.

I suspect its something to do with the fact that CEditView directly manipulates the hosted edit control's buffer and doesn't go through SetWindowText or ReplaceSel or any of those functions to display text.

Mighty annoying. Anyone come across this before?

Open *.jpg with iexplore.exe

Member 22148011-Aug-04 20:08

Member 221480

11-Aug-04 20:08

Hi, I will like to open a *.jpg file using iexplore.exe in my program. I tried to do this using
CreateProcess("...\\IEXPLORE.exe", "pic.jpg", .....) but it doesn't open the pic.jpg but displays the default homepage instead. Any suggestion on how I can get it done properly? Thanks.

Re: Open *.jpg with iexplore.exe

dipeka11-Aug-04 22:41

dipeka

11-Aug-04 22:41

Visit the following site

http://bobmoore.mvps.org/Win32/w32tip46.htm[^]

Hope this helps

Dipeka.A.J

IWinHttpRequest

sereneguy11-Aug-04 20:08

sereneguy

11-Aug-04 20:08

Hi,

I'm Using IWinHttpRequest in my (Console)Application to connect to a web server.
If I change the System date beyond year 2005 I 'm not able to connect to the
server.

OS : Win 2000 Professional
SP : 3

Is there any date restriction on winHttp / the SP 3 of Win 2000 Professional?
Can Anyone help me on this!

Thanks and Regards,
thiru

How to access USB port from VC++

Fatboyslim11-Aug-04 20:07

Fatboyslim

11-Aug-04 20:07

Hi I want to Read and write to USB port from VC++.
I want to know how to use the inbuilt USB device driver.

for e.g
If i want to create a file using createfile function then
what service shall i specify in the first argument.
Thanx in advance

XML Parsing

11-Aug-04 19:19

I got XML File,
it looks like this:

<br />
  <?xml version="1.0" encoding="windows-1251" ?> <br />
- <Данные><br />
- <Справочники><br />
- <Name Group="Спиртные напитки"><br />
- <Name Group="бальзам"><br />
- <Name Group="бальзам Биос"><br />
  <Name Code="Казахский_0.25_л" SMTH="бальзам Биос Казахский 0.25 л" SMTH1="Есть" МелкОптЦена="111" ОптЦена="0" РознЦенра="115" /> <br />
  <Name Code="Казахский_0.5_л" SMTH="бальзам Биос Казахский 0.5 л" SMTH1="Есть" МелкОптЦена="200" ОптЦена="0" РознЦенра="206" /> <br />
  </Реквизит><br />
  </Реквизит><br />
  </Справочники><br />
  </Данные><br />

And i want to get data (Group,Code, SMTH,SMTH1......). But i don't know how to get them. I Use msxml.dll and interfaces : MSXML::IXMLDOMDocumentPtr, MSXML::IXMLDOMElementPtr...

Re: XML Parsing

11-Aug-04 19:49

Something wrong with writing XML code here Smile | :)

In other words:

<Name Group="Something">
<Name Code="1234" SMTH="asdf" SMTH1="gd">

How to get data from Code, SMTH?

Re: XML Parsing

*Dreamz11-Aug-04 20:41

*Dreamz

11-Aug-04 20:41

		IXMLDOMDocument *pDomDoc;<br />
		IXMLDOMNodeList		*pXMLDOMNodeList = NULL;<br />
		IXMLDOMNode			*pXMLDOMNode = NULL,<br />
							*pXMLAttrNode = NULL,<br />
							*pXMLChildNode = NULL;<br />
		IXMLDOMNamedNodeMap *pXMLAttributes = NULL;<br />
<br />
		IXMLDOMNode *pXMLParentNode = NULL,<br />
					*pXMLGrandParentNode = NULL;<br />
<br />
		CString strAttributeValue;<br />
		CComBSTR bstrAttrName;<br />
		HRESULT	hResult;<br />
<br />
		//Create the Instance for IXMLDOMDocument<br />
		hResult = CoCreateInstance(CLSID_DOMDocument,<br />
								   NULL,<br />
								   CLSCTX_INPROC_SERVER,<br />
								   IID_IXMLDOMDocument,<br />
								   reinterpret_cast<void**>(&lpDomDoc));<br />
		if(FAILED(hResult))<br />
			return FALSE;<br />
		hResult = pDomDoc->put_async(FALSE);<br />
		if(FAILED(hResult))<br />
			return FALSE;<br />
<br />
		CComVariant		vFileName(szXmlFilePath);<br />
		VARIANT_BOOL	vBool;<br />
		//Loading the Specified File<br />
		pDomDoc->load(vFileName,&vBool);<br />
		if(VARIANT_TRUE == vBool)<br />
		{<br />
			hResult = pDomDoc->getElementsByTagName(L"Name", &pXMLDOMNodeList);<br />
			if(FAILED(hResult))<br />
				return FALSE;<br />
<br />
			//Get the First Node from the List<br />
			hResult = pXMLDOMNodeList->nextNode(&pXMLDOMNode); //Get this in a loop if u have more than one Name Node<br />
			if(FAILED(hResult))<br />
				return FALSE;<br />
<br />
			hResult = pXMLDOMNode->get_attributes(&pXMLDOMNamedNodeMap);<br />
			if(FAILED(hResult) || pXMLDOMNamedNodeMap == NULL )<br />
				return FALSE;<br />
<br />
			bstrAttrName = "Code"; //Use for other attributes also..<br />
			hResult = pXMLDOMNamedNodeMap->getNamedItem(bstrAttrName,&pXMLAttrNode);<br />
			if(FAILED(hResult) || pXMLAttrNode == NULL)<br />
				return FALSE;<br />
			hResult = pXMLAttrNode->get_nodeValue(&varNodeValue);<br />
			if(FAILED(hResult))<br />
				return FALSE;<br />
			strAttributeValue.Format(_T("%S"),V_BSTR(&varNodeValue));<br />
		}<br />
		else<br />
			return FALSE;

Hope this will help you ...

Re: XML Parsing

paulb11-Aug-04 21:10

paulb

11-Aug-04 21:10

here is an example using XPath query language:

assuming XML file looks like this and you want to get the value of attrib2

<element1>
<element2 attrib1="123" attrib2=abc" />
</element1>

<pre>

#using "msxml40.dll"

IXMLDOMDocumentPtr spDoc;
spDoc.CreateInstance(__uuidof(MSXML2::DOMDocument40));

// load the XML file
_variant_t vFile("path to some file.xml");
VARIANT_BOOL bSuccess;
spDoc->load(vFile, &bSuccess);

// construct XPath query
std::string str("/element1/element2[@attrib1='123']");
_bstr_t bstr(str);

// get node matching the query (assuming only one node matches)
IXMLDOMNodePtr spNode;
spDoc->selectSingleNode(bstr, &spNode);

// get attribute node
IXMLDOMNamedNodeMapPtr spNodeMap;
spNode->get_attributes(&spNodeMap);

IXMLDOMNodePtr spAttributeNode;
spNodeMap->getNamedItem(L"attrib2", &spAttributeNode);

// get attribute value
_variant_t v;
hr = spAttributeNode->get_nodeValue(&v);

</pre>

Re: XML Parsing

Rassul Yunussov12-Aug-04 0:09

Rassul Yunussov

12-Aug-04 0:09

Thak YOU Very MUCH. You BOTH Helped me so MUCH. Tanks again Smile | :)

.
But now i got another question - how to create new XML file?
And Where To Find Full Help Information about all these?

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