How to delete memory allocated by COM?

[RYU]

Hi, I have a COM object that actually allocate a memory and return a value to the calling function. When I call this COM object in C++, I can just delete the pointer by using delete keyword. But how can I do this in C#? How to free the memory allocated by the COM object? eg. In my COM class:

HRESULT __stdcall CTestCOM::getValues(int **arrRetVal)
{
    int *pTmp = new int[100];
    ...
    ...
    ...
    (*arrRetVal) = pTmp;
    
    return S_OK;
}

Thanks :)

[RYU]

Btw, I tried to use both Marshal.FreeCoTaskMem() and Marshal.FreeHGlobal() but it crashes with error:

Invalid Address specified to RtlFreeHeap( 00210000, 055AB388 )

Cheers :)

[Tony Richards]

Why not add a method to the COM class that deletes a pointer that it is provided in a parameter? (Assuming here that .NET doesn't do something nasty to the pointer that makes this impossible/wrong, I'm no expert on COM Interop...)

[RYU]

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 :)