Using MSXML APIs in C++ program

[koumodaki]

I have a C++ Program which in which I have to read a XML file contents. The code is #include "fstream.h" #include "string.h" #import "msxml2.dll" named_guids raw_interfaces_only using namespace MSXML2; using namespace std; void main() { IXMLDOMDocumentPtr m_pXmlDoc; IXMLDOMNodePtr m_pProductNode; HRESULT hr = m_pXmlDoc.CreateInstance(MSXML2::CLSID_DOMDocument); _variant_t vtFileName("my_xml.xml"); VARIANT_BOOL vtRetVal; m_pXmlDoc->load(vtFileName,&vtRetVal); } The CreateInstance() call fails and m_pXmlDoc is NULL. Why am I not getting the instance? What is wrong in this piece of code?

[David Crow]

koumodaki wrote:

The CreateInstance() call fails...

And the value of hr would be what?

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"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

[jhwurmbach]

Try

HRESULT hr = m_pXmlDoc.CreateInstance( __uuidof(MSXML2::DOMDocument40));

This way, you ask explicitly for a DOM document version 4.

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Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal.
George Orwell, "Keep the Aspidistra Flying", Opening words

[koumodaki]

On my PC hr = -2147221008 while debugging......guess its some junk value

[koumodaki]

I get an error while compiling. error C2039: 'DOMDocument40' : is not a member of 'MSXML2' error C2065: 'DOMDocument40' : undeclared identifier Could you please tell me th eproper file to include?

[David Crow]

It appears you have failed to call CoInitialize().

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"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

[jhwurmbach]

*I* do

#import "../thirdparty/msxmlbase/msxmlinclude/msxml2.tlb" named_guids

but the path will be totally different for you.

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Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal.
George Orwell, "Keep the Aspidistra Flying", Opening words

[Michael Dunn]

You have guessed wrong. Use the Error Lookup tool to get the description of that error.

--Mike-- Visual C++ MVP :cool: LINKS~! Ericahist | PimpFish | CP SearchBar v3.0 | C++ Forum FAQ Hungarian notation FTW

[koumodaki]

Thanks David. I had not called CoInitialize(). It works now.:)

[led mike]

Michael Dunn wrote:

You have guessed wrong.

Well that hardly ever happens.