Re: HOW to use ATL dll in vc++

"Mohit" <behappy.mohit@gmail.com> ha scritto nel messaggio
news:1eecd214-3175-4ec0-ad3e-48944ea5c765@y10g2000prc.googlegroups.com...


My understanding is that your ATL COM DLL is just a simple COM Server (no
ActiveX, right?).

In that case, you can use it from C++ with code like this:

<code>

 // Result of COM operations
 HRESULT hr;

 // COM interface to call the services offered by the ATL component
 IYourATLComponent * pATLComponent = NULL;

 // Initialize COM
 hr = CoInitialize(NULL);
 if (FAILED(hr))
    ... error

  // Create an instance of the component
  hr = CoCreateInstance(
    CLSID_YourATLComponent,
    NULL,
    CLSCTX_INPROC_SERVER,
    IID_IYourATLComponent,
    (void**) &pATLComponent
  );
  if ( SUCCEEDED(hr) )
  {
            ... call component methods using returned COM interface
            hr = pATLComponent->DoSomething(...);
  }

 // Cleanup COM
 CoUninitialize();

</code>

HTH,
Giovanni