#include< windows.h>会导致很多语法错误 [英] #include <windows.h> causes a lot of syntax errors

问题描述

我的程序使用Qt和OpenGL。它在Linux和Mac下正确编译。
当在Windows上编译时，我需要#include windows.h才能使用OpenGL，代码如下：

My program uses Qt and OpenGL. It compiles correctly under Linux and Mac. When compiled on windows, I need to #include windows.h in order to use OpenGL, the code is like following,

#if defined(_WIN32) || defined(_WIN64) || defined(WIN32) || defined(WIN64)
#include <windows.h>
#endif
#ifdef __APPLE__
#include <OpenGL/glu.h>
#include <GLUT/glut.h>
#else
#include <GL/glu.h>
#include <GL/glut.h>
#endif

但是，有很多错误信息，例如

However, there are a lot of error messages like

 C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(167) : error C2146: syntax error : missing ')' before identifier 'PRPC_MESSAGE'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(167) : error C2165: 'left-side modifier' : cannot modify pointers to data
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(167) : error C2513: 'void *' : no variable declared before '='
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(167) : error C2440: 'initializing' : cannot convert from 'std::ostream' to 'void *'
        No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(168) : error C2059: syntax error : ')'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(226) : error C2146: syntax error : missing ')' before identifier 'RPC_MESSAGE'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(226) : warning C4229: anachronism used : modifiers on data are ignored
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(226) : error C2491: 'I_RpcNegotiateTransferSyntax' : definition of dllimport data not allowed
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(227) : error C2059: syntax error : ')'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(235) : error C2146: syntax error : missing ')' before identifier 'RPC_MESSAGE'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(235) : warning C4229: anachronism used : modifiers on data are ignored
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(235) : error C2491: 'I_RpcGetBuffer' : definition of dllimport data not allowed
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(236) : error C2059: syntax error : ')'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(242) : error C2146: syntax error : missing ')' before identifier 'RPC_MESSAGE'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(242) : warning C4229: anachronism used : modifiers on data are ignored
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(242) : error C2491: 'I_RpcGetBufferWithObject' : definition of dllimport data not allowed
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(244) : error C2059: syntax error : ')'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(251) : error C2146: syntax error : missing ')' before identifier 'RPC_MESSAGE'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(251) : warning C4229: anachronism used : modifiers on data are ignored
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(251) : error C2491: 'I_RpcSendReceive' : definition of dllimport data not allowed
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(252) : error C2059: syntax error : ')'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(259) : error C2146: syntax error : missing ')' before identifier 'RPC_MESSAGE'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(259) : warning C4229: anachronism used : modifiers on data are ignored
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(259) : error C2491: 'I_RpcFreeBuffer' : definition of dllimport data not allowed
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(260) : error C2059: syntax error : ')'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(267) : error C2146: syntax error : missing ')' before identifier 'PRPC_MESSAGE'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(267) : warning C4229: anachronism used : modifiers on data are ignored
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(267) : error C2491: 'I_RpcSend' : definition of dllimport data not allowed
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(268) : error C2059: syntax error : ')'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(275) : error C2146: syntax error : missing ')' before identifier 'PRPC_MESSAGE'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(275) : warning C4229: anachronism used : modifiers on data are ignored
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(275) : error C2491: 'I_RpcReceive' : definition of dllimport data not allowed
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(277) : error C2059: syntax error : ')'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(284) : error C2146: syntax error : missing ')' before identifier 'RPC_MESSAGE'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(284) : warning C4229: anachronism used : modifiers on data are ignored
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(284) : error C2491: 'I_RpcFreePipeBuffer' : definition of dllimport data not allowed
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(285) : error C2059: syntax error : ')'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(302) : error C2146: syntax error : missing ')' before identifier 'I_RPC_MUTEX'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(302) : warning C4229: anachronism used : modifiers on data are ignored
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(302) : error C2182: 'I_RpcRequestMutex' : illegal use of type 'void'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(302) : error C2491: 'I_RpcRequestMutex' : definition of dllimport data not allowed
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(303) : error C2059: syntax error : ')'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(438) : error C2061: syntax error : identifier 'cout'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(453) : error C2061: syntax error : identifier 'cout'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(479) : error C2061: syntax error : identifier 'cout'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(487) : error C2061: syntax error : identifier 'cout'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(534) : error C2061: syntax error : identifier 'cout'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(542) : error C2061: syntax error : identifier 'cout'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(728) : error C2061: syntax error : identifier 'cout'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(744) : error C2061: syntax error : identifier 'cout'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(754) : error C2146: syntax error : missing ')' before identifier 'UUID'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(754) : warning C4229: anachronism used : modifiers on data are ignored
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(754) : error C2491: 'I_UuidCreate' : definition of dllimport data not allowed
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(755) : error C2059: syntax error : ')'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(763) : error C2061: syntax error : identifier 'cout'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(771) : error C2061: syntax error : identifier 'cout'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(779) : error C2061: syntax error : identifier 'cout'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(838) : error C2061: syntax error : identifier 'cout'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(848) : error C2061: syntax error : identifier 'cout'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(873) : error C2144: syntax error : 'unsigned long' should be preceded by ')'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(873) : error C2448: 'I_RpcConnectionInqSockBuffSize' : function-style initializer appears to be a function definition
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(874) : error C2144: syntax error : 'unsigned long' should be preceded by ';'
C:\Program Files (x86)\Windows Kits\8.1\include\shared\rpcdcep.h(874) : fatal error C1903: unable to recover from previous error(s); stopping compilation

如果我不#include windows.h，那么这些错误不会出现。
我使用VS2013与Qt 5.3。

If I don't #include windows.h, then those errors will not appear. I am using VS2013 with Qt 5.3.

推荐答案

在Windows上的OpenGL绑定到WGL，

因此，您不能 #include< gl / gl.h> 通过包括< GL / glu.h> ）而不首先包括定义GDI / Windows预处理器令牌的一些特定于Windows的头部，例如 WINGDIAPI 和 APIENTRY 。但这实际上是Windows上的任何OpenGL程序绑定到任何Windows特定（头的明智）。程序。

OpenGL on Microsoft Windows is tied to WGL, which is in turn tied to GDI.

As a result, you cannot #include <gl/gl.h> (you are indirectly doing this by including <GL/glu.h>) without first including some Windows-specific header that defines GDI/Windows pre-processor tokens such as WINGDIAPI and APIENTRY. But that is actually the extent to which any OpenGL program on Windows is tied to anything Windows-specific (header wise).

WinDef.h 定义 APIENTRY 和 WinGDI.h 定义 WINGDIAPI - 包括 Windows.h 带来这两个头（和很多其他垃圾不幸的是）。所以包括 Windows.h 大多是方便;到 最低限度 在Windows上编译OpenGL软件，您应该 #include< WinDef.h> 后跟 #include< WinGDI.h> ，然后最后 #include< GL / gl.h> 。

WinDef.h defines APIENTRY and WinGDI.h defines WINGDIAPI - including Windows.h brings in both of those headers (and a lot of other garbage unfortunately). So including Windows.h is mostly a convenience; to minimally compile OpenGL software on Windows you should #include <WinDef.h> followed by #include <WinGDI.h> and then finally #include <GL/gl.h>.

或者，您可以在之前 #define WIN32_LEAN_AND_MEAN #include< Windows.h> ，它会 显着 减少通过包含该标题引入的不相关的事情的数量。许多Visual C ++项目实际上默认定义了预处理器定义，当它们第一次被创建时，你可能想要看看你的项目是否这样配置。

Alternatively, you can #define WIN32_LEAN_AND_MEAN just prior to #include <Windows.h> and it will significantly reduce the number of unrelated things that are brought in by including that header. Many Visual C++ projects actually define that pre-processor definition by default when they are first created, you might want to see if your project is configured that way.

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