/// <summary>
/// Creates COM class instance directly without using any COM Activation or thread Marshaling services.
/// </summary>
/// <param name="libraryModule"></param>
/// <param name="clsid"></param>
/// <returns></returns>
public static object DangerousCreateInstanceDirectly(NRegFreeCom.IAssembly libraryModule, Guid clsid)
{
var classFactory = GetClassFactory(libraryModule, clsid);
var iid = new Guid(WELL_KNOWN_IIDS.IID_IUnknown);
object obj;
classFactory.CreateInstance(IntPtr.Zero, ref iid, out obj);
return obj;
}
/// <seealso href="https://gist.github.com/1568627/76da6e65a2d925fffdb48a0ae5efd783281f9244"/>
private static IClassFactory_AutoMarshal GetClassFactory(NRegFreeCom.IAssembly libraryModule, Guid clsid)
{
var getClassFactory = libraryModule.GetDelegate<DEF_Objbase.DllGetClassObject>();
var classFactoryIid = new Guid(WELL_KNOWN_IIDS.IID_IClassFactory);
IClassFactory_AutoMarshal classFactory;
var hresult = getClassFactory(ref clsid, ref classFactoryIid, out classFactory);
if (hresult != 0)
{
throw new Win32Exception(hresult, string.Concat("Cannot create class factory for {0}", clsid));
}
return classFactory;
}
