是否可以在非托管代码中使用属性？

发布于 2024-09-25 21:58:19 字数 1006 浏览 4 评论 0原文

我有一个非托管的 C++ 应用程序（非托管的含义：不使用任何花哨的 .Net 东西）。我想用一些元信息来扩展它，看起来我可以使用属性的概念。

我实际上想要实现的目标如下。从这样一个简单的类开始：

class Book
   {
   public:
      ...
   private:
      string m_name;
      string m_author;
      int    m_year;
   };

我想构建可以访问类的“元信息”的功能，并使用它动态地在其上构建逻辑，例如

包含 3 个编辑字段（名称、作者、年份）的
对话框具有 3 列的数据网格
序列化
逻辑将此类映射到具有 3 列的数据库表
...

我最疯狂的梦想是像这样修改此类：

[id="Book"]
class Book
   {
   public:
      ...
   private:
      [id="Name", defaultValue="", maximumLength=100]
      string m_name;

      [id="Author", defaultValue="", maximumLength=100]
      string m_author;

      [id="Year", defaultValue=2000, minimum=1900]
      int    m_year;
   };

然后能够获取此“元”信息来构建对话框，填充数据网格、序列化和反序列化实例……

但是，属性的概念是否仅限于 .Net/托管代码？

如果我可以在非托管代码中使用属性，是否可以做这样的事情？什么是一个好的起点？（示例，...）

此外，在其他平台上的其他编译器中是否可以找到相同（或相似）的概念？

我正在使用 Visual Studio 2010，并且如前所述，使用非托管/本机 C++。

原文

I have an unmanaged C++ application (unmanaged meaning: not using anything of the the fancy .Net stuff). I want to extend it with some meta information, and it looks like I could use the concept of attributes.

What I actually try to achieve is the following.
Starting from something a simple class like this:

class Book
   {
   public:
      ...
   private:
      string m_name;
      string m_author;
      int    m_year;
   };

I want to build functionality that can access the 'meta information' of the class and use it to dynamically build logic on it, e.g.

a dialog containing 3 edit fields (name, author, year)
a data grid with 3 columns
serialization logic
logic that maps this class to a database table with 3 columns
...

I my wildest dreams I imagine modifying this class like this:

[id="Book"]
class Book
   {
   public:
      ...
   private:
      [id="Name", defaultValue="", maximumLength=100]
      string m_name;

      [id="Author", defaultValue="", maximumLength=100]
      string m_author;

      [id="Year", defaultValue=2000, minimum=1900]
      int    m_year;
   };

And then being able to get this 'meta' information to build up dialogs, filling data grids, serializing and deserializing instances, ...

But, is the concept of attributes limited to .Net/managed code?

And if I could use attributes in unmanaged code, would it be possible to do something like this? And what is a good place to start? (examples, ...)

Also, can the same (or similar) concepts be found in other compilers, on other platforms?

I am using Visual Studio 2010 and, as said before, unmanaged/native C++.

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