//[LoaderOptimization(LoaderOptimization.MultiDomain)]
public static IntPtr DllGetClassObject(IntPtr prclsid, IntPtr priid, out IntPtr ppv)
{
Guid rclsid = (Guid)Marshal.PtrToStructure(prclsid, typeof(Guid));
Guid riid = (Guid)Marshal.PtrToStructure(priid, typeof(Guid));
ppv = IntPtr.Zero;
try
{
ComInfo comInfo = ComInfo.GetComInfoFromClsid(rclsid);
if (ComHelper.GuidIsIn(riid,
comInfo.ClsId,
ComHelper.IID_IClassFactory,
ComHelper.IID_IUnknown,
ComHelper.IID_IDispatch,
ComHelper.IID_IOleObject))
{
Type type = typeof(Classes.ComClassFactory);
//Pass a memory address to write to so we can marshal the COM interface.
IntPtr hComObjAddress = Marshal.AllocHGlobal(IntPtr.Size);
_ClassFactoryInstance = NewAppDomain(comInfo).CreateInstanceFromAndUnwrap(
type.Assembly.Location, //Changed from type.Assembly.FullName - specify path instead of class name
type.FullName,
true,
BindingFlags.Default,
null,
new object[] { rclsid, hComObjAddress },
null,
null);
IntPtr comMarshalDirect = Marshal.GetComInterfaceForObject(_ClassFactoryInstance, typeof(IClassFactory));
IntPtr comObjectAddr = Marshal.ReadIntPtr(hComObjAddress);
//Call to DllClassObject is requesting IClassFactory.
ppv = comObjectAddr;
Marshal.FreeHGlobal(hComObjAddress);
return(IntPtr.Zero); //S_OK
}
else
{
return(new IntPtr(ComHelper.E_NOINTERFACE)); //CLASS_E_CLASSNOTAVAILABLE
}
}
catch
{
return(new IntPtr(ComHelper.E_NOINTERFACE)); //CLASS_E_CLASSNOTAVAILABLE
}
}