c++头文件中的类怎么继承.idl文件中定义的接口

[shuda356421]

c++头文件中的类怎么继承.idl文件中定义的接口

//TimeBeijing.idl

import "oaidl.idl";
import "ocidl.idl";

[
object,
uuid(61A1C81D-82CA-44e4-A60E-7BDD8E58A833),
oleautomation
]
interface ITimeBeijing : IUnknown //定义ITimeBeijing接口
{
HRESULT GetTimeBeijing([out]int * hour, [out]int * min, [out]int * sec);
};

[
uuid(1E850106-D5C5-4249-86DF-40256DB3A5D2),
version(1.0)
]
library TimeBeijingLib
{

importlib("stdole32.tlb");

[
uuid(57E9BE40-AE4F-493b-A79B-FBBF7EC7F2AE)
]
coclass TimeBeijingClass//定义TimeBeijingClass类
{
[default] interface ITimeBeijing;
};
};

要实现TimeBeijingClass类，怎么写，我写的class TimeBeijingClass : public ITimeBeijing{
...
}
出错，说ITimeBeijing 未定义基类。这个怎么改啊，求帮助

[JiMoKuangXiangQu]

http://msdn.microsoft.com/en-us/library/8tesw2eh.aspx

[JiMoKuangXiangQu]

http://msdn.microsoft.com/en-us/library/windows/desktop/ms688736(v=vs.85).aspx