最后让我们分析一下C:\VCTestVCComProj\Debug\ValidateCreditCardServer.tlh作为Developing COM Components using VC-ATL(3)的结尾吧。
ValidateCreditCardServer.tlh清单
// Created by Microsoft (R) C/C++ Compiler Version 12.00.8168.0 (ad98f509).
//
// c:\vctestvccomproj\debug\ValidateCreditCardServer.tlh
//
// C++ source equivalent of Win32 type library ..\ValidateCreditCardServer\Debug\ValidateCreditCardServer.dll
// compiler-generated file created
#pragma once
#pragma pack(push, 8)
#include <comdef.h>
namespace VALIDATECREDITCARDSERVERLib {…………………………………..………名字空间
//
// Forward references and typedefs
//
struct /* coclass */ ValidateCard;………………………………………………………………..….. 组件类
struct __declspec(uuid("b1d1c73c-e340-4fdc-8734-92ecec64dc4e"))
/* dual interface */ IValidateCard;………………………………………………….………………用户接口
//
// Smart pointer typedef declarations
//
_COM_SMARTPTR_TYPEDEF(IValidateCard, __uuidof(IValidateCard));………..………智能指针
//
// Type library items
//
struct __declspec(uuid("c79635d2-7b86-4b20-a83c-0565dca54c3c"))…………………组件类CLSID
ValidateCard;
// [ default ] interface IValidateCard
struct __declspec(uuid("b1d1c73c-e340-4fdc-8734-92ecec64dc4e"))……………………用户接口IID
IValidateCard : IDispatch
{
//
// Wrapper methods for error-handling
//
long ValidateCreditCard (
_bstr_t bstrCCNo,
_bstr_t bstrCCType );
HRESULT LuhnCheck (
_bstr_t bstrCCNo,
_bstr_t bstrCCType );
HRESULT LengthCheck (
_bstr_t bstrCCNo,
_bstr_t bstrCCType );
HRESULT PrefixCheck (
_bstr_t bstrCCNo,
_bstr_t bstrCCType );……………………………………………….………….. 接口方法(对外)
//
// Raw methods provided by interface
//
virtual HRESULT __stdcall raw_ValidateCreditCard (
BSTR bstrCCNo,
BSTR bstrCCType,
long * val ) = 0;
virtual HRESULT __stdcall raw_LuhnCheck (
BSTR bstrCCNo,
BSTR bstrCCType ) = 0;
virtual HRESULT __stdcall raw_LengthCheck (
BSTR bstrCCNo,
BSTR bstrCCType ) = 0;
virtual HRESULT __stdcall raw_PrefixCheck (
BSTR bstrCCNo,
BSTR bstrCCType ) = 0;…………………………………………………..……. 接口方法(对内)
};
//
// Wrapper method implementations
//
#include "c:\vctestvccomproj\debug\ValidateCreditCardServer.tli"………….. 类型库实现文件
} // namespace VALIDATECREDITCARDSERVERLib……………………………..……….. 名字空间
#pragma pack(pop)
参照COM组件端C:\ValidateCreditCardServer\ValidateCreditCardServer.idl
ValidateCreditCardServer.idl清单
// ValidateCreditCardServer.idl : IDL source for ValidateCreditCardServer.dll
//
// This file will be processed by the MIDL tool to
// produce the type library (ValidateCreditCardServer.tlb) and marshalling code.
import "oaidl.idl";
import "ocidl.idl";
[
object,
uuid(B1D1C73C-E340-4FDC-8734-92ECEC64DC4E),……………………………. IID部分
dual,
helpstring("IValidateCard Interface"),
pointer_default(unique)
]
interface IValidateCard : IDispatch
{
[id(1), helpstring("method ValidateCreditCard")] HRESULT ValidateCreditCard([in] BSTR bstrCCNo,[in]BSTR bstrCCType,[out,retval]long *val );
[id(2), helpstring("method LuhnCheck")] HRESULT LuhnCheck([in] BSTR bstrCCNo,[in]BSTR bstrCCType);
[id(3), helpstring("method LengthCheck")] HRESULT LengthCheck([in] BSTR bstrCCNo,[in]BSTR bstrCCType);
[id(4), helpstring("method PrefixCheck")] HRESULT PrefixCheck([in] BSTR bstrCCNo,[in]BSTR bstrCCType);
};
[
uuid(B3404054-C33E-4931-B737-5783CEEFECDB),………………………………… LIBID部分
version(1.0),
helpstring("ValidateCreditCardServer 1.0 Type Library")
]
library VALIDATECREDITCARDSERVERLib
{
importlib("stdole32.tlb");
importlib("stdole2.tlb");
[
uuid(C79635D2-7B86-4B20-A83C-0565DCA54C3C),…………………….……CLSID部分
helpstring("ValidateCard Class")
]
coclass ValidateCard
{
[default] interface IValidateCard;
};
};
小结:
Developing COM Components using VC-ATL(3)主要介绍了Visual C++与Visual Basic编写的组件的相互间的调用。在接下来一篇里将介绍双接口。
Developing COM Components using VC-ATL(3)完
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