静态struct链接器错误 [英] Static struct linker error

问题描述

我想在C ++中创建一个静态结构：

 
 static struct brushes 
 {
 static HBRUSH白色; 
 static HBRUSH yellow; 
}; 
 

但它不工作，我得到：

 
错误4错误LNK2001：未解析的外部符号public：static struct HBRUSH__ * Brushes :: white
 

p>

这个想法是能够使用 Brushes :: white ， Brushes :: yellow 整个程序，而无需创建画笔的实例。

解决方案

您必须在.cxx文件中定义静态成员，例如：

  HBRUSH刷子::白色; 
  

原因是头文件没有定义，只声明它。 p>

I'm trying to create a static struct in C++:

static struct Brushes
{
  static HBRUSH white ;
  static HBRUSH yellow ;
} ;

But its not working, I'm getting:

Error 4 error LNK2001: unresolved external symbol "public: static struct HBRUSH__ * Brushes::white"

Why?

The idea is to be able to use Brushes::white, Brushes::yellow throughout the program, without having to create an instance of Brushes.

解决方案

You have to define the static members somewhere, usually in the .cxx file, e.g.:

HBRUSH Brushes::white;

The reason is that the header file doesn't make the definition, it only declares it.

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