Developing COM Components using VC-ATL(3-7)(2)

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;