com编程

COM即组件对象模型-Component Object Model

每个接口都有一个GUID

IUnknown接口

ULONG AddRef();

HRESULT QueryInterface(
REFIID riid,
void **ppvObject
);

HRESULT __clrcall QueryInterface(
Q **pp,

);

ULONG Release();

https://docs.microsoft.com/en-us/windows/desktop/com/component-object-model–com–portal