ComCtl.h

 //////////////////
 // Typical COM class that has a custom class factory.
 //
 class CFooCtrl : public COleControl {
 public:
    CFooCtrl();
 
 protected:
    ~CFooCtrl();
 
    BEGIN_OLEFACTORY(CFooCtrl)        // Class factory and guid
       // Add your overrides here.
       // Nested class is called CFooCtrlFactory
       // (CFooCtrl::CFooCtrlFactory)
       //
       virtual BOOL VerifyUserLicense();
       virtual BOOL GetLicenseKey(DWORD, BSTR FAR*);
    END_OLEFACTORY(CFooCtrl)
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 •
 •
};

 ////////////////////////////////////////////////////////////////
 // ControlWizard generated code using BEGIN/END_OLEFACTORY
 
 #include "stdafx.h"
 #include "ComCtl.h"
 
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 •
 •

 /////////////////////////////////////////////////////////////////////////////
 // Initialize class factory and guid
 // This does not implement any class factory functions, it only instantiates
 // the factory itself and guid.
 //
 IMPLEMENT_OLECREATE_EX(CFooCtrl, "FOO.ComCtrl.1",
    0xd711842c, 0x98ce, 0x11d2, 0xa0, 0xd0, 0, 0x40, 0x33, 0xd0, 0x64, 0x5d)
 
 /////////////////////////////////////////////////////////////////////////////
 // CFooCtrl::CFooCtrlFactory::UpdateRegistry -
 // Adds or removes system registry entries for CFooCtrl
 //
 BOOL CFooCtrl::CFooCtrlFactory::UpdateRegistry(BOOL bRegister)
 {
    // TODO: Verify that your control follows apartment-model threading rules.
    // Refer to MFC TechNote 64 for more information.
    // If your control does not conform to the apartment-model rules, then
    // you must modify the code below, changing the 6th parameter from
    // afxRegApartmentThreading to 0.
    //
    if (bRegister)
       return AfxOleRegisterControlClass(
          AfxGetInstanceHandle(),
          m_clsid,
          m_lpszProgID,
          IDS_COM,
          IDB_COM,
          afxRegApartmentThreading,
          _dwComOleMisc,
          _tlid,
          _wVerMajor,
          _wVerMinor);
    else
       return AfxOleUnregisterClass(m_clsid, m_lpszProgID);
 }
 
 /////////////////////////////////////////////////////////////////////////////
 // Licensing strings
 //
 static const TCHAR BASED_CODE _szLicFileName[] = _T("com.lic");
 
 static const WCHAR BASED_CODE _szLicString[] =  L"Copyright (c) 1998  ";
 
 
 /////////////////////////////////////////////////////////////////////////////
 // CFooCtrl::CFooCtrlFactory::VerifyUserLicense -
 // Checks for existence of a user license
 //
 BOOL CFooCtrl::CFooCtrlFactory::VerifyUserLicense()
 {
    return AfxVerifyLicFile(AfxGetInstanceHandle(), _szLicFileName,
       _szLicString);
 }
 
 
 /////////////////////////////////////////////////////////////////////////////
 // CFooCtrl::CFooCtrlFactory::GetLicenseKey -
 // Returns a runtime licensing key
 //
 BOOL CFooCtrl::CFooCtrlFactory::GetLicenseKey(DWORD dwReserved,
    BSTR FAR* pbstrKey)
 {
    if (pbstrKey == NULL)
       return FALSE;
 
    *pbstrKey = SysAllocString(_szLicString);
    return (*pbstrKey != NULL);
 }