Windows::ServicingAPI::CCDF

Windows::ServicingAPI::CCDF 有四个字段：
第一、三字段是虚函数地址；
构造对象时，第二、四字段赋 0。

//----- (101E4CDD) --------------------------------------------------------_DWORD *__thiscall Windows::Auto<  Windows::COM::CComObject<    Windows::ServicingAPI::CCDF> *>  ::Allocate(_DWORD *this){  v1 = this;  result = RtlAllocateHeap(*(HANDLE *)(__readfsdword(48) + 24), 0, 0x10u);  if ( result )  {    result[1] = 0;    result[3] = 0;    *result = &Windows::COM::CComObject<Windows::ServicingAPI::CCDF>::`vftable'{for `Windows::COM::CComObjectBase'};    result[2] = &Windows::COM::CComObject<Windows::ServicingAPI::CCDF>::`vftable'{for `IUnknown'};  }  *v1 = result;  return result;}