C# Definition:

[ComImport]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
[Guid("00000002-0000-0000-C000-000000000046")]
interface IMalloc {
    // Allocate a block of memory
    // Return value: a pointer to the allocated memory block.
    [PreserveSig]
    IntPtr Alloc(
       UInt32 cb); // Size, in bytes, of the memory block to be     
             // allocated.

    // Changes the size of a previously allocated memory block.
    // Return value: reallocated memory block
    [PreserveSig]
    IntPtr Realloc(
        IntPtr pv,  // Pointer to the memory block to be reallocated
        UInt32 cb); // Size of the memory block, in bytes, to be
             // reallocated.

    // Free a previously allocated block of memory.
    [PreserveSig]
    void Free(
        IntPtr pv); // Pointer to the memory block to be freed.

    // This method returns the size, in bytes, of a memory block
    // previously
    // allocated with IMalloc::Alloc or IMalloc::Realloc.
    // Return value: The size of the allocated memory block in bytes.
    [PreserveSig]
    UInt32 GetSize(
        IntPtr pv); // Pointer to the memory block for which the size is
            // requested.

    // This method determines whether this allocator was used to allocate
    // the specified block of memory.
    // Return value: 1 - allocated 0 - not allocated by this IMalloc Instance.
    [PreserveSig]
    Int16 DidAlloc(
        IntPtr pv); // Pointer to the memory block

    // Minimizes the heap by releasing unused memory to the operating system.
    [PreserveSig]
    void HeapMinimize();
    }

VB Definition:

<ComImport> _
<Guid("TODO")> _
'TODO: Insert <InterfaceType(ComInterfaceType.InterfaceIsIUnknown)> _ if this doesn't derive from IDispatch
Interface IMalloc
   TODO
End Interface

User-Defined Types:

None.

Notes:

None.