求C#与COM互操作的书或资料

Question

这几天在看COM和C#互操作的应用，看了几个例子和MSDN上的文章，比如，http://msdn.microsoft.com/en-us/library/aa645736(v=vs.71).aspx#vcwlkcominteroppart1cclienttutorialanchor1

但还是不是很明白其中的细节，比如去哪里找“original MIDL version of the interface:”，函数参数类型互相转换的依据怎么弄，等等，比如网上找了两个关于 IOleCommandTarget网上找到两个实现，目前看着很歇菜，不确定哪一个是正确的，或者那个更好，依据在哪里？

[ComImport, ComVisible(true),Guid("B722BCCB-4E68-101B-A2BC-00AA00404770"), InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IOleCommandTarget
    {
        [return: MarshalAs(UnmanagedType.I4)]
        [PreserveSig]
        int QueryStatus(
            [In] IntPtr pguidCmdGroup,
            [In, MarshalAs(UnmanagedType.U4)] uint cCmds,
            [In, Out, MarshalAs(UnmanagedType.Struct)] ref tagOLECMD prgCmds,
            [In, Out] IntPtr pCmdText);

        [return: MarshalAs(UnmanagedType.I4)]
        [PreserveSig]
        int Exec(           
            [In] IntPtr pguidCmdGroup,
            [In, MarshalAs(UnmanagedType.U4)] uint nCmdID,
            [In, MarshalAs(UnmanagedType.U4)] uint nCmdexecopt,
            [In] IntPtr pvaIn,
            [In, Out] IntPtr pvaOut);
    }
   
    [ComImport, InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("B722BCCB-4E68-101B-A2BC-00AA00404770"), ComVisible(true)]
    public interface IOleCommandTarget
    {
        [return: MarshalAs(UnmanagedType.I4)]
        [PreserveSig]
        int QueryStatus(ref Guid pguidCmdGroup, int cCmds, [In, Out] OLECMD prgCmds, [In, Out] IntPtr pCmdText);
        [return: MarshalAs(UnmanagedType.I4)]
        [PreserveSig]
        int Exec(ref Guid pguidCmdGroup, int nCmdID, int nCmdexecopt, [In, MarshalAs(UnmanagedType.LPArray)] object[] pvaIn, ref int pvaOut);
    }

高手推荐些详细的资料，扫扫盲，谢谢

Answer 1

么有高人飘过吗？

Answer 2

看下MSDN的文档吧：

http://msdn.microsoft.com/zh-cn/library/aa288434(v=vs.71).aspx

http://msdn.microsoft.com/zh-cn/library/aa288455(v=vs.71).aspx

你可以买本书来看看，基本的内容通了才好。

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Cheers, Amy