calling C# com object from c++ using ATL

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  12 years ago

  by liateven

  Liat W

  Tel Aviv-Yafo, Israel

  Joined 12 years ago
  Hello, I have a C# com object (.net framework 2.0) that I want to call from C++. I tried to import the tlb and create the object using MyNamespace::IMyInterfacePtr pObj; but i got errors about not impelemting queryInterface, AddRef etc. I found out that I should use CComObject (ref: http://support.microsoft.com/kb/181265[^]. So declaring the variable was a success using: CComObject* pObj; Now I am trying to create an instance by using: HRESULT hRes = (CComObject::CreateInstance(&pObj); But I get the following error: c:\program files\microsoft visual studio\vc98\atl\include\atlcom.h(2395) : error C2504: 'MyConClass' : base class undefined see reference to class template instantiation 'ATL::CComObject;' being compiled Any ideas what I am doing wrong? thanks!
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