请问高手: 怎么解决 char_t 被2个文件重复定义的问题?


2. 遇到2个C都定义了 char_t, 但是定义的意义又不一样.

// file: uemf.h

#defineT(x)__TXT(x)
#define__TXT(s)L ## s
typedef unsigned short char_t;
typedef unsigned shortuchar_t;

// file: pgixml.hpp

// Character interface macros
#ifdef PUGIXML_WCHAR_MODE
#define PUGIXML_TEXT(t) L ## t
#define PUGIXML_CHAR wchar_t
#else
#define PUGIXML_TEXT(t) t
#define PUGIXML_CHAR char
#endif

namespace pugi
{
// Character type used for all internal storage and operations; depends on PUGIXML_WCHAR_MODE
typedef PUGIXML_CHAR char_t;

#ifndef PUGIXML_NO_STL
// String type used for operations that work with STL string; depends on PUGIXML_WCHAR_MODE
typedef std::basic_string<PUGIXML_CHAR, std::char_traits<PUGIXML_CHAR>, std::allocator<PUGIXML_CHAR> > string_t;
#endif
}

题外话: 今天做个东西, 太复杂了
1. MFC 的类调用一个 C语言函数(goahead), 然后Goahead又要调用我的一个C++类. 要么预处理头有问题, 要么 error LNK2019: unresolved external symbol.
参考了 http://blog.csdn.net/qingkong8832/article/details/6688839
也没有解决.
[解决办法]
改个名字呗...
[解决办法]
namespace pugi{}
用这个空间的文件改成pugi::char

改下头文件顺序试试.