IDE add-in

//---------------------------------------------------------------------------

#ifndef ExpertH
#define ExpertH
#include <ToolsApi.hpp>
//---------------------------------------------------------------------------
class TMyExpert : public IOTAMenuWizard
{
public:
  // IUnknown
  HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void **ppv)
  {
    if (riid==IID_IUnknown || riid==IID_IOTANotifier || riid==IID_IOTAWizard || riid==IID_IOTAMenuWizard)
    {
        *ppv=this;
        AddRef();
        return S_OK;
    }
    else
    return E_NOINTERFACE;
  }
  ULONG STDMETHODCALLTYPE AddRef() {return InterlockedIncrement(&ref);}
  ULONG STDMETHODCALLTYPE Release() {int tmp = InterlockedDecrement(&ref); if (tmp==0) delete this; return tmp;}
  // IOTANotifier
  void __fastcall AfterSave() {}
  void __fastcall BeforeSave() {}
  void __fastcall Destroyed() {}  
  void __fastcall Modified() {}
  // IOTAWizard
  AnsiString __fastcall GetIDString() {return "GIZMO.EXPERT1";}
  AnsiString __fastcall GetName() {return "GizmoExpert1";}
  TWizardState __fastcall GetState() {TWizardState ws; ws << wsEnabled; return ws;}
  void __fastcall Execute(){ShowMessage("IDE add-in!");}
  // IOTAMenuWizard
  AnsiString __fastcall GetMenuText() {return "&IDE add-in...";}
  // TOtaBrowseExpert
  __fastcall TMyExpert() : IOTAMenuWizard(), ref(0) {}
  __fastcall ~TMyExpert() {}
private:
  long ref;
};

[Linker Error] Unresolved external '__fastcall Toolsapi::RegisterPackageWizard(
const System::DelphiInterface<Toolsapi::IOTAWizard>)' referenced from C:\MYEXPERTS\MYEXPERT.OBJ