Thanks Hessam...

What is Dispose() and what does it do? Do you have a link to it in MSDN? I think Dispose() may be C# specific, so perhaps you should ask in that forum instead to get better suited answers. "It's supposed to be hard, otherwise anybody could do it!" - selfquote "High speed never compensates for wrong direction!" - unknown

Works great, very speedy, good compression, good features. Recommended!

You're welcome. :)

You must use RegisterClassEx first.

Hi Pallini, The application is too complex. We've bought the code from 3rd party company for 100K. I kind of hoping be able to just convert it to OLE object so can be used within our application. Any idea? Cheers :)

Ah... found the solution. Simply convert it to Automation class :-D

12 years later and we still haven't heard back. I can see why they wanted to speed this up.

Hi Leppie, Thanks for the reply. The reason I pass the first element address because I want to manipulate the value in my COM object. It works fantastically in x86, but doesn't work in x64. leppie wrote: (does COM not require you to pass the length parameter too?) You were right, the length of the array must be passed in to the COM object. But in my case (not in this example), it is actually determine by another attribute that is set previously. leppie wrote: Your array length is only 5, so how can you read the 6th element? Uppppsss... you were right again. It should be new int[6]. Sorry...

In the Project properties, change the <b>Output Type:</b> to <b>Console Application</b>   You'll get an additional console window in a Winform application.   Ugly for sure but it works. Jer 29:11

Hi Trichards57, Every good idea. I can pass in the pointer it returns to C# and pass it back to the COM object to delete it. I have to test it first though. Thanks for your help :) Cheers :)

I found the problem. Apparently I am trying to be really smart about this by creating only 1 Factory and put a check in CreateInstance() to determine whether it is AddClass or MainTestClass. I was wrong because the IID check should be in DllGetClassObject(). I have created 2 different factories for these classes and it works fine. I can now return the AddClass by using GetAddObject() function. However, when I tried to use the function in AddClass (eg. SetFirstNumber()), it gave me this error: The runtime has encountered a fatal error. The address of the error was at 0x7f628678, on thread 0x105c. The error code is 0xc0000005. This error may be a bug in the CLR or in the unsafe or non-verifiable portions of user code. Common sources of this bug include user marshaling errors for COM-interop or PInvoke, which may corrupt the stack. Here is my code: HRESULT __stdcall CMainTestClass::GetSamTest(IAdd **ppRetVal) { CAddClass *pAddClass = new CAddClass(); *ppRetVal = pAddClass; return S_OK; } Thanks again for any help :)

What is possibly the cause of this? Retrieving the COM class factory for component with CLSID {87109B64-4DA3-4D97-83B6-6FC6DAC78971} failed due to the following error: 80040154. Here is my IDL declaration: import "unknwn.idl"; [ object, uuid(1221db62-f3d8-11d4-825d-00104b3646c0), helpstring("Test Interface") ] interface ITestInterface : IUnknown { HRESULT TestReturnValue([out,retval] long *pBuffer); }; [ uuid(3ff1aab8-f3d8-11d4-825d-00104b3646c0), helpstring("Interfaces for Code Guru algorithm implementations .") ] library MyTestLibrary { importlib("stdole32.tlb"); importlib("stdole2.tlb"); [ uuid(87109B64-4DA3-4d97-83B6-6FC6DAC78971) ] coclass MyTestObject { [default] interface ITestInterface; } } After convert it to Interop dll, I am using it in C# MyTestLibrary.MyTestObjectClass testObj; testObj = new MyTestLibrary.MyTestObjectClass(); //It fails here... Thanks :)

I see what is the problem. I shouldn't put u2.UserID<>Manager.ManagerID instead I should put u2.UserID=Manager.ManagerID Thanks Syed and Silent Eagle for your help. Cheers :)

Satips do you intentionally just answer questions badly? --- How to get answers to your questions[^]

I found the answer, please use this function: ExpandEnvironmentStrings. Cheers :)