MIDL在编译IDL文件时更改标识符的大小写 [英] MIDL changes case of identifier when compiling IDL file

问题描述

我有一个IDL片段，如下所示:

I've got a snippet of IDL that looks like this:

[ object, uuid(...), pointer_default(unique) ]
interface IVirtualMachine { /* ... */ }

[ object, uuid(...), pointer_default(unique) ]
interface IVirtualServer : IUnknown
{
    HRESULT FindVirtualMachine(
        [in] BSTR configurationName,
        [out,retval] IVirtualMachine **virtualMachine);
};

[ uuid(...), version(1.0) ]
library VirtualServerLib
{
    [ uuid(...) ]
    coclass VirtualServer
    {
        [default] interface IVirtualServer;
    };

    [ uuid(...) ]
    coclass VirtualMachine
    {
        [default] interface IVirtualMachine;
    };
};

...当我使用MIDL进行编译，然后查看生成的类型库时，VirtualMachine(大写V)变成了virtualMachine(小写V).

...when I compile it with MIDL and then look in the generated type library, VirtualMachine (upper-case V) has been turned into virtualMachine (lower-case V).

例如，如果我将我的同班同学称为XirtualMachine，那一切都很好.

If I call my coclass XirtualMachine, for example, it's all good.

什么鬼?

推荐答案

这是MIDL的错误/功能.它不允许相同的标识符以不同的大小写形式出现，因此从第一次看到该单词起，它将所有后续的单词实例都替换为大写字母.

This is a terrible bug/feature of MIDL. It doesn't allow the same identifier to appear with different casing, so it replaces all subsequent instances of a word with the casing from the first time it was seen.

请参见 KB220137

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