DEFINE_ENUM_FLAG_OPERATORS(x)的作用

sandro_zhang

于 2011-10-26 13:40:52 发布

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分类专栏： vc++ 文章标签： microsoft include windows c function build

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本文介绍了在Windows编程中使用的宏DEFINE_ENUM_FLAG_OPERATORS(x)。该宏允许对枚举类型进行位运算操作，解决编译错误。内容涉及Microsoft编译环境、C/C++函数及头文件的使用。

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#define DEFINE_ENUM_FLAG_OPERATORS(x)

今天编译XPS相关的Sample，出现以下错误：

1>c:\program files\microsoft sdks\windows\v7.1\include\msopc.h(440) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>c:\program files\microsoft sdks\windows\v7.1\include\msopc.h(447) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>c:\program files\microsoft sdks\windows\v7.1\include\msopc.h(447) : error C2733: second C linkage of overloaded function 'DEFINE_ENUM_FLAG_OPERATORS' not allowed
1>        c:\program files\microsoft sdks\windows\v7.1\include\msopc.h(447) : see declaration of 'DEFINE_ENUM_FLAG_OPERATORS'
1>Build log was saved at "file://c:\Program Files\Microsoft SDKs\Windows\v7.1\Samples\xps\XpsOMPrint\Debug\BuildLog.htm"
1>XpsOMPrint - 3 error(s), 0 warning(s)

经查阅，需在文档的最前面添加如下：

#define DEFINE_ENUM_FLAG_OPERATORS(x)
#include <stdio.h>
#include <comdef.h>
#include <windows.h>