visual studio c++添加文档注释，生成api文档

1 可自动添加文档注释的插件

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2 visual studio可通过/doc编译选项生成xml格式的代码，然后通过sandcastle等工具处理生成api文档

3 visual studio推荐的xml注释标记

<c>	<code>	<example>
<exception>1	<include>1	<list>
<para>	<param>1	<paramref>1
<permission>1	<remarks>	<returns>
<see>1	<seealso>1	<summary>
<value>

summary用来添加给类添加注释，para用来增加一行。

// xml_summary_tag.cpp
// compile with: /LD /clr /doc
// post-build command: xdcmake xml_summary_tag.dll

/// Text for class MyClass.
public ref class MyClass {
public:
   /// <summary>MyMethod is a method in the MyClass class.
   /// <para>Here's how you could make a second paragraph in a description. <see cref="System::Console::WriteLine"/> for information about output statements.</para>
   /// <seealso cref="MyClass::MyMethod2"/>
   /// </summary>
   void MyMethod(int Int1) {}

   /// text
   void MyMethod2() {}
};

param用来说明参数，name用单引号或者双引号指明函数参数，如果函数参数名称不正确，将出现编译错误。 

// xml_param_tag.cpp
// compile with: /clr /doc /LD
// post-build command: xdcmake xml_param_tag.dll
/// Text for class MyClass.
public ref class MyClass {
   /// <param name="Int1">Used to indicate status.</param>
   void MyMethod(int Int1) {
   }
};