test1.idl

COM组件接口继承的Visual C++实现

// Test1.idl : IDL source for Test1.dll
//

// This file will be processed by the MIDL tool to
// produce the type library (Test1.tlb) and marshalling code.

import "oaidl.idl";
import "ocidl.idl";
	[
		object,
		uuid(DC8C9DEC-A7BC-44D9-96E5-B7A6B4A59D6C),
	
		helpstring("IFun Interface"),
		pointer_default(unique)
	]
	interface IFun : IUnknown
	{
		[helpstring("method Add")] HRESULT Add([in] long n1, [in] long n2, [out, retval] long *pVal);
	};

	[
		object,
		uuid(B9D75722-1950-405b-8BB6-9788A6DB1DB2),
	
		helpstring("IFun2 Interface"),
		pointer_default(unique)
	]
	interface IFun2 : IFun
	{
		[helpstring("method Sub")] HRESULT Sub([in] long n1, [in] long n2, [out, retval] long *pVal);
	};

[
	uuid(C1B7A657-C24C-4A5E-AC76-72E8DC8235F1),
	version(1.0),
	helpstring("Test1 1.0 Type Library")
]
library TEST1Lib
{
	importlib("stdole32.tlb");
	importlib("stdole2.tlb");

	[
		uuid(D85BF4AA-3CB9-464E-BC48-BDCEC7D8B2E7),
		helpstring("CalCulate Class")
	]
	coclass CalCulate
	{
		 interface IFun;
		[default] interface IFun2;
	};
};