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我正在尝试在 Eclipse C++ 环境（MinGW GCC 工具链）中调用已注册的 COM 接口（Inproc dll）。因此，我不相信我可以像在 Visual C++ 中通常那样简单地导入 dll 类型库。我正在尝试自己定义接口以简化函数调用，而不是使用 Invoke。

oleview 外接口的 IDL 如下所示：

  uuid(9293C753-B073-11D2-BD89-0060978EEB9C),
  helpstring("IXSequence Interface"),
  dual
]
dispinterface IXSequence {
    properties:
    methods:
        [id(0x00000001), helpstring("method Close")]
        void Close();
        [id(0x00000002), helpstring("method New")]
        void New();
        [id(0x00000003), helpstring("method Open")]
        void Open(
                        BSTR FileName, 
                        long ReadOnly);
        [id(0x00000004), helpstring("method Save")]
        void Save(
                        BSTR UserName, 
                        BSTR Comment, 
                        long Overwrite);
        [id(0x00000005), helpstring("method SaveAs")]
        void SaveAs(
                        BSTR FileName, 
                        BSTR UserName, 
                        BSTR Comment, 
                        long Overwrite);
        [id(0x00000006), propget, helpstring("property Header")]
        VARIANT Header();
        [id(0x00000007), propget, helpstring("property AuditDataCollection")]
        VARIANT AuditDataCollection();
        [id(0x00000008), propget, helpstring("property Samples")]
        VARIANT Samples();
        [id(0x00000009), propget, helpstring("property BracketType")]
        XBracketTypes BracketType();
        [id(0x00000009), propput, helpstring("property BracketType")]
        void BracketType([in] XBracketTypes rhs);
        [id(0x0000000a), propget, helpstring("property UserLabel")]
        BSTR UserLabel(short Index);
        [id(0x0000000a), propput, helpstring("property UserLabel")]
        void UserLabel(
                        short Index, 
                        [in] BSTR rhs);
        [id(0x0000000b), propget, helpstring("property TrayConfiguration")]
        BSTR TrayConfiguration();
        [id(0x0000000b), propput, helpstring("property TrayConfiguration")]
        void TrayConfiguration([in] BSTR rhs);
        [id(0x0000000c), propget, helpstring("property FileName")]
        BSTR FileName();
        [id(0x0000000d), propget, helpstring("property NewFile")]
        long NewFile();
};

我试图在我自己的头文件中定义接口，如下所示：

const GUID CLSID_XcalFiles = { 0x9293C754, 0xB073, 0x11D2, {0xBD, 0x89, 0x00, 0x60, 0x97, 0x8E, 0xEB, 0x9C } };
const IID IID_IXSequence = { 0x9293C753, 0xB073, 0x11D2, {0xBD, 0x89, 0x00, 0x60, 0x97, 0x8E, 0xEB, 0x9C } };

typedef enum {
    XUnspecified = 0,
    XOverlapped = 1,
    XNonBracketed = 2,
    XNonOverlapped = 3,
    XOpen = 4
} XBracketTypes;

enum XSampleTypes
{
    XSampleUnknown = 0,
    XSampleBlank = 1,
    XSampleQC = 2,
    XSampleStdClear = 3,
    XSampleStdUpdate = 4,
    XSampleStdBracket = 5,
    XSampleStdBracketStart = 6,
    XSampleStdBracketEnd = 7,
    XSampleProgram = 8,
    XSampleNumbersOfDifferentTypes = 9
};

DECLARE_INTERFACE_(IXSequence, IDispatch)
{
//methods
    STDMETHOD_(void, Close)(THIS)PURE;
    STDMETHOD_(void, New)(THIS)PURE;
    STDMETHOD_(void, Open)(THIS_ BSTR FileName, long ReadOnly)PURE;
    STDMETHOD_(void, Save)(THIS_ BSTR UserName, BSTR Comment, long Overwrite)PURE;
    STDMETHOD_(void, SaveAs)(THIS_ BSTR FileName, BSTR UserName, BSTR Comment, long Overwrite)PURE;
    STDMETHOD_(VARIANT, GetHeader)(THIS)PURE;
    STDMETHOD_(VARIANT, GetAuditDataCollection)(THIS)PURE;
    STDMETHOD_(VARIANT, GetSamples)(THIS)PURE;
//properties
    STDMETHOD_(XBracketTypes, BracketType)(THIS)PURE;
    STDMETHOD_(void, BracketType)(THIS_ XBracketTypes rhs)PURE;
    STDMETHOD_(BSTR, UserLabel)(THIS_ short Index)PURE;
    STDMETHOD_(void, UserLabel)(THIS_ short Index, BSTR rhs)PURE;
    STDMETHOD_(BSTR, TrayConfiguration)(THIS)PURE;
    STDMETHOD_(void, TrayConfiguration)(THIS_ BSTR rhs)PURE;
    STDMETHOD_(BSTR, FileName)(THIS)PURE;
    STDMETHOD_(long, NewFile)(THIS)PURE;

};

这似乎适用于方法调用，但不适用于属性。当我尝试调用任何属性函数时，我会遇到访问冲突。但是，如果我使用类似的东西，它似乎确实有效

STDMETHOD(GetBracketType)(THIS_ XBracketTypes* rhs)PURE;

那有意义吗？有没有更好的方法来声明 COM 接口的属性，以便我可以像使用普通属性一样使用它们？

4

1 回答 1

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通常，C++ 接口类似于：

STDMETHOD(get_BracketType)(BracketType* BType);

STDMETHOD(put_BrackedType)(BracketType Btype);

属性通常会有 HRESULT 返回类型......就像方法一样。他们将在属性名称前面有一个 get_ 或 put_ 前缀。

不确定 Eclipse C++ 环境是如何做到这一点的。

于 2019-11-05T21:15:09.767 回答