Question COM Pointers

[Hitoruna]

I have used google to try and find a definition of what a "COM Pointer" is and I could not find it.
Can someone point me where to look to find this information.

I am trying to understand https://docs.unity3d.com/ScriptRefe...otoCaptureFrame.GetUnsafePointerToBuffer.html
where they say:

GetUnsafePointerToBuffer();

Returns

IntPtr A native COM pointer to the IMFMediaBuffer which contains the image data.

what is the difference with a common pointer?

 

[JohnH]

I think it is related to this: Marshal.ReleaseComObject Method (Object) (System.Runtime.InteropServices)