Windows中的storage-class Attribute-优快云博客

本文详细介绍了C语言中__declspec(...)属性的使用方法及参数意义。这些参数包括thread、naked、dllimport和dllexport等，它们简化并标准化了微软特定的C语言扩展。文章还说明了这些属性如何应用于数据或函数声明，并指出它们不会重新定义函数本身的类型属性。

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1 先看C语言中的可以使用的__declspec(...)的参数。
下面是拷贝的微软msdn文档中的解释：

Extended attribute syntax simplifies and standardizes the Microsoft-specific extensions to 
the C language. The storage-class attributes that use extended attribute syntax include thread, 
naked, dllimport, and dllexport.

The extended attribute syntax for specifying storage-class information uses the __declspec keyword, 
which specifies that an instance of a given type is to be stored with 
a Microsoft-specific storage-class attribute (thread, naked, dllimport, or dllexport). 
Examples of other storage-class modifiers include the static and extern keywords. 
However, these keywords are part of the ANSI C standard and as such are not covered by 
extended attribute syntax.

Syntax
storage-class-specifier: 
__declspec ( extended-decl-modifier-seq ) /* Microsoft Specific */

extended-decl-modifier-seq: 
extended-decl-modifier opt

extended-decl-modifier-seq extended-decl-modifier

extended-decl-modifier: 
thread
naked
dllimport
dllexport

White space separates the declaration modifiers. Note that extended-decl-modifier-seq can be empty; 
in this case, __declspec has no effect.

The thread, naked, dllimport, and dllexport storage-class attributes are a property 
only of the declaration of the data or function to which they are applied; 
they do not redefine the type attributes of the function itself.
The thread attribute affects data only. The naked attribute affects functions only. 
The dllimport and dllexport attributes affect functions and data.

END Microsoft Specific

2 C中的storage-class attribute要比C++少很多。
只有微软提供的编译器才识别这些东西，比如naked在windows下的gcc编译器是被忽略的，也就是不会识别。（我试验过的）

转载于:https://www.cnblogs.com/jack204/archive/2011/12/05/2276684.html