我是否需要在非托管代码中删除通过Marshal.PtrToStructure封送的结构？

I have this C++ code:

我有这个C ++代码:

extern "C" __declspec(dllexport) VOID AllocateFoo(MY_DATA_STRUCTURE** foo)
{
    *foo = new MY_DATA_STRUCTURE;

    //do stuff to foo
}
extern "C