How to implenment QueryInterface method in vb just like in VC++

[Tsinghua]

Hi
who can tell me how can i implenment QueryInterface method in vb just like in VC++ and how to use ATLInternalQueryInterface API in ATL.DLL ?
Thanks!

[berta]

U can't implementing a QueryInterface in vb.
when U develops a ATL component in VB many declaretions and implemnetations are implicit unlike VC++ where U must declare everything.

so add a Class in ActiveX DLL VB project (myClass) and put the following code:

public sub sayHello
msgbox "say hello"
end sub

set property Instansing = Multiuse.

now U have create a Interface named myClass and a coClass nemed myClass.

if U want to call this class and its methods:

dim obj as myDLLProject.myClass 'early binding
' dim obj 'late binding

set obj = createobject("myDLLProject.myClass")

obj.sayHello

hi,brt


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[Tsinghua]

Thanks berta!

I have written my words to create ATL Control,which use ATL API,also i can get the IUnkown pointer in vb using AtlAxGetControl API, then i want to get pObject by using ATLInternalQueryInterface API ,but i don't know how to use it.
thanks anyway!
Tsinghua