C / C++ / MFC

10-Apr-05 21:27

Hi all,

I am developing a Win32 Console application that reads XML file and displays the data. I am importing msxml4.dll and then usiing the following code to create the instance of the DomDocument class

HRESULT hr;
IXMLDOMDocumentPtr pDocument = NULL;
IXMLDOMParseErrorPtr pParseError = NULL;
BSTR bstr = NULL;
VARIANT_BOOL status = NULL;
VARIANT vsrc;

CoInitialize(NULL);

hr = CoCreateInstance(CLSID_XMLDocument,NULL,_ CLSCTX_INPROC_SERVER,IID_IXMLDocument,(void**)&pDocument);

VariantInit(&vsrc);
V_BSTR(&vsrc) = SysAllocString(L"try.xml");
V_VT(&vsrc) = VT_BSTR;

hr = pDocument->load(vsrc,&status);
hr = pDocument->Getxml(&bstr);
cout << "Try.xml comtents: " << bstr;

if(bstr)
SysFreeString(bstr);
if(&vsrc)
VariantClear(&vsrc);
if(pParseError)
pParseError->Release();
if(pDocument)
pDocument->Release();

CoUninitialize();

when I compiled the program it gives error
'Getxml' : is not a member of 'IXMLDOMDocument'

when I run the application without calling getXML function it gives me run time error that unhandled exception in the application.exe 0xC0000005: Access Violation.
Can anyone tell me where I am wrong.
I ahve the following files in system folder
msxml2.dll,msxml2r.dll,msxml3a.dll,msxml3.dll.msxml3r.dll.msxml4.dll,msxml4r.dll.msxmlr.dll

One point where I suspect error could be as to crete instance using CLSID_DOMDocument40, IXMLDOMDocument4 but in my project it gives me error when I call the CoCreateInstance with the above mentioned parameters.

Thanks in advance.

Ritu Kwatra

ThatsAlok10-Apr-05 22:37

ThatsAlok

10-Apr-05 22:37

Instead of GetXml() simply use IXmlDomDocument::xml variable. it is BSTR variable which contain whole XML file which is currently loaded in interface.

Anyway from where you got this example Code!

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Ritu Kwatra10-Apr-05 23:01

10-Apr-05 23:01

Hi Alok,
I tried accessing XML variable also but the error is same that is
'xml' : is not a member of 'IXMLDOMDocument'

and I got the example on the msdn site
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/xmlsdk/html/dom_hdi_cpp_getready.asp[^]

The difference in my code is in the CoCreateInstance statement. When I use CLSID_DOMDocument30(as in the msdn example) then it gives me the following error

'CLSID_DOMDocument30' : undeclared identifier

Ritu Kwatra

ThatsAlok10-Apr-05 23:17

ThatsAlok

10-Apr-05 23:17

Here is small example,hope that's work for you.

MSXML2::IXMLDOMDocument *l_pXMLDomDocument;
MSXML2::IXMLDOMElement  *l_XMLDomElemnent;
MSXML2::IXMLDOMNode  *l_XMLDomFirstNode,*l_XMLDomNextNode;

CLSID clsidXMLDom;
	
::CLSIDFromProgID(OLESTR"msxml2.domdocument"),&clsidXMLDom);

	
	if(SUCCEEDED(CoCreateInstance(clsidXMLDom,NULL,CLSCTX_ALL,IID_IXMLDOMDocument,reinterpret_cast<LPVOID*>(&l_pXMLDomDocument))))
{
	//Object creation successful
	MessageBox("Object Creation successful");
}

CString strXml="<xml><cp>helloo</cp></xml>";
l_pXMLDomDocument->loadXml(_variant_t(strXml.AllocSysString()));

MessageBoxW(NULL,l_pXMLDomDocument->xml,L"XML",MB_OK);

 l_pXMLDomDocument->get_firstChild(&l_XMLDomFirstNode);

 MessageBoxW(NULL,l_XMLDomFirstNode->GetnodeName(),L"",MB_OK);

l_XMLDomFirstNode->get_firstChild(&l_XMLDomNextNode);

 CString str;

while(l_XMLDomNextNode)
 {
 MessageBoxW(NULL,l_XMLDomNextNode->GetnodeName(),L"",MB_OKCANCEL);

 l_XMLDomNextNode->get_firstChild(&l_XMLDomFirstNode);

 while(l_XMLDomFirstNode)
 {
 MessageBoxW(NULL,l_XMLDomFirstNode->GetnodeName(),l_XMLDomFirstNode->GetnodeValue().bstrVal,MB_OK);

 l_XMLDomFirstNode->get_nextSibling(&l_XMLDomFirstNode);

 }
		  

 if(l_XMLDomNextNode->get_nextSibling(&l_XMLDomNextNode)==S_FALSE)
	 l_XMLDomNextNode=NULL;

 }

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Ritu Kwatra10-Apr-05 23:27

10-Apr-05 23:27

Hi Alok,

Error in the CoCreateInstance is still the same. Error is
D:\Ritu\VC++\Win32XML\xmlsource.cpp(20) : error C2065: 'IID_IXMLDOMDocument' : undeclared identifier

Ritu Kwatra

Ritu Kwatra10-Apr-05 23:33

10-Apr-05 23:33

Hi Alok,

The type of errors are still same. Errors are:
error C2039: 'loadXml' : is not a member of 'IXMLDOMDocument'
error C2039: 'xml' : is not a member of 'IXMLDOMDocument'
error C2039: 'GetnodeName' : is not a member of 'IXMLDOMNode'
error C2039: 'GetnodeName' : is not a member of 'IXMLDOMNode'
error C2039: 'GetnodeValue' : is not a member of 'IXMLDOMNode'

Ritu Kwatra

ThatsAlok10-Apr-05 23:37

ThatsAlok

10-Apr-05 23:37

use #include <msxml2.h>

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Alok Gupta
visit me at http://www.thisisalok.tk

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Ritu Kwatra10-Apr-05 23:53

10-Apr-05 23:53

Hi Alok,
Including msxml2.h does not make any difference. Right now I am downloading MSXML 4.0 SP2. It may change the scenario.
But to run the XML from visual basic we don't need to install MSXML4.0. Just registering the dlls are sufficient.

Do we really need to install MSXML4.0 for VC++ ??? I think if we have the DLLs then it should run in the proper way.

Ritu Kwatra

visual studio add-in & edit box

ThatsAlok11-Apr-05 0:06

ThatsAlok

11-Apr-05 0:06

There is theoretically no difference in COM programming in both VB and VC.
If some COM dll run in vb then it defiantly run in VC, that’s the power of COM!

Ritu Kwatra wrote:
Do we really need to install MSXML4.0 for VC++???

Actually MSXML SKD provide you -> documentation, sample source code and msxml4.h. it's upto u what do u need

Ritu Kwatra wrote:
I think if we have the DLLs then it should run in the proper way.

Just by registering the proper dll makes your program work properly.

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Alok Gupta
visit me at http://www.thisisalok.tk

"I ~~Think~~ Believe this Will Help"

sumo6910-Apr-05 21:26

sumo69

10-Apr-05 21:26

hi all,

i've managed to write a simply add-in for visual studio. the toolbar currently only consists of a couple of command buttons.

i would like to add an edit box as part of my add-in. is this possible?

could someone please reply with some sample code to get me started?

cheers,
suresh

Help me to kill running bugs ....

Sreekanth Muralidharan10-Apr-05 19:07

Sreekanth Muralidharan

10-Apr-05 19:07

Hi I have an application which runs a timer synchronously. I think I have a bug in the timer. Can I find out the bug with the VC++ debugger or should I go for any other tools. Please help with ideas.
Regards
Sreekanth Muralidharan
Hyderabad

oustar10-Apr-05 19:22

oustar

10-Apr-05 19:22

windbg.

Sreekanth Muralidharan10-Apr-05 21:31

Sreekanth Muralidharan

10-Apr-05 21:31

Hi Thanks a lot. That was a great tool. Was due to memory leak !!
Regards
Sreekanth Muralidharan

ThatsAlok10-Apr-05 20:29

ThatsAlok

10-Apr-05 20:29

Download DBGView from here

http://www.sysinternals.com/ntw2k/freeware/debugview.shtml[^]

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Alok Gupta
visit me at http://www.thisisalok.tk

"I ~~Think~~ Believe this Will Help"