Error in implementing IXMLDOMNode Interface?

[satishjk]

I am trying to implement IXMLDOMNode Interface by using
Implements IXMLDOMNode.

That interface has one of its property definitions as given below, which
differs in data type. As in Let Property definition it has String data type
where in Get Property it has Variant.

Private Property Let IXMLDOMNode_dataType(ByVal RHS As String)

End Property

Private Property Get IXMLDOMNode_dataType() As Variant

End Property

Because of that type mismatch in property definition I am getting following
error:

Compile Error:
Definitions of property procedures for the same property are inconsistent,
or a property procedure has an optional parameter, a ParamArray or an Invalid
set final parameter.

I would appreciate any help to solve the above problem.

Thanks,
Satish

[pvb]

I could be way off on this but I'm pretty sure you can't do what you're trying to do. I guess it doesn't really make sense why you would want to code the implementation to that interface and i'm thinking that as far as vb is concerned, perhaps all languages, that you can't do that and that's probably by design. To use the interface you could do the following:

Private Sub Command1_Click()
    Dim xmlDom As MSXML2.DOMDocument
    Dim xmlDomNode As IXMLDOMNode
    Set xmlDom = New MSXML2.DOMDocument
    xmlDom.async = False
    If xmlDom.loadXML("<xml><MyNode>234</MyNode></xml>") Then
        Set xmlDomNode = xmlDom.documentElement.selectSingleNode("/xml/MyNode")
        xmlDomNode.dataType = "int"
        Debug.Print xmlDomNode.xml
    End If
    Debug.Print xmlDom.xml
    Set xmlDomNode = Nothing
    Set xmlDom = Nothing
End Sub

The immediate window output looks like this:

<MyNode xmlns:dt="urn:schemas-microsoft-com:datatypes" dt:dt="int">234</MyNode>
<xml><MyNode xmlns:dt="urn:schemas-microsoft-com:datatypes" dt:dt="int">234</MyNode></xml>

[satishjk]

Thank you,

what I am doing here is trying to use the MSXML and implement this in my own object say myxml. This myxml I wnat to implement MSXML interfaces.

in my declaration I have

Implements IXMLDOMNode

For Implements I need to implement every interface for MSXML. However, the datatype property has mismatch for get and set, which gives an error, as I mentioned in my previous message. I am trying to get way around for the implementation of datatype property.

Hope this will clear it little bit.

any answer, suggestion is welcome.
Satish

[pvb]

So, now I'm curious. I understood what you wanted to do in the first place, now I want to know why you want to implement the IXMLDOMNode interface yourself in vb. There's no way you're going to improve anything in the existing implementation with VB. Surely they(MS) used some pretty low level code, C++ most likely, that would smoke any vb code. Let me know, sounds interesting.

[Jamel rose]

have you tried just changing the string type to a variant type and compiling the app? That would be my first approach.

[pvb]

With the concept of implementing interfaces you don't get to change the interface you're implementing, just doesn't work that way for good reasons.

[Jamel rose]

I am more curious than belligerent. How could it be set up correctly in the interface with two different variable types when it can not be done with any other properties created?
i.e. -

public property get x() as integer

must have

public property let x(vData as integer)

as it's counter form, it will not pass the compiler in the form of

public property let x(vdata as variant)

If I am missing something I would like to know.

Thanks,
Jeff