PCH Warning: header stop cannot be in a macro or #if block - Visual C++ 2010 Express SP1

This is pasted from a website, which presumably was working. I did some googling and found that the issue I have now is a result of Visual C++ 2010 SP1, which I downloaded today, and is now giving me this error:

PCH Warning: header stop cannot be in a macro or #if block.

Hopefully someone will be able to help me with this!

#ifndef APP_STATE_H
#define APP_STATE_H

#include "Framework.h"

class AppState; //this line is giving me the error

//define two classes

#endif

Framework.h:

#ifndef OGRE_FRAMEWORK_H
#define OGRE_FRAMEWORK_H

#include <OgreCamera.h>
#include <OgreEntity.h>
#include <OgreLogManager.h>
#include <OgreOverlay.h>
#include <OgreOverlayElement.h>
#include <OgreOverlayManager.h>
#include <OgreRoot.h>
#include <OgreViewport.h>
#include <OgreSceneManager.h>
#include <OgreRenderWindow.h>
#include <OgreConfigFile.h>

#include <OISEvents.h>
#include <OISInputManager.h>
#include <OISKeyboard.h>
#include <OISMouse.h>

class OgreFramework : public Ogre::Singleton<OgreFramework>,OIS::KeyListener,OIS::MouseListener{
public:
    OgreFramework();
    ~OgreFramework();

    bool initOgre(Ogre::String wndTitle, OIS::KeyListener *pKeyListener = 0, OIS::MouseListener *pMouseListener = 0);
    void updateOgre(double timeSinceLastFrame);

    //OIS
    bool keyPressed(const OIS::KeyEvent &keyEventRef);
    bool keyReleased(const OIS::KeyEvent &keyEventRef);
    bool mouseMoved(c开发者_如何学Const OIS::MouseEvent &evt);
    bool mousePressed(const OIS::MouseEvent &evt, OIS::MouseButtonID id);
    bool mouseReleased(const OIS::MouseEvent &evt, OIS::MouseButtonID id);

    Ogre::Root* mRoot;
    Ogre::RenderWindow* mRenderWnd;
    Ogre::Viewport* mViewport;
    Ogre::Log* mLog;
    Ogre::Timer* mTimer;

    //OIS
    OIS::InputManager* mInputMgr;
    OIS::Keyboard* mKeyboard;
    OIS::Mouse* mMouse;
private:
    OgreFramework(const OgreFramework&);
    OgreFramework& operator= (const OgreFramework&);
};

#endif

I had the same issue and was looking for a solution. Following worked for me:

Add #pragma once at the start of the file (even before the #ifndef APP_STATE_H header guard)

You probably used a project template to get started and threw away the pre-generated source code files. Those project templates like to turn on precompiled headers because it is such a time-saver. Right-click your project in the Solution Explorer window, Properties, C/C++, Precompiled Headers. Change the "Precompiled Header" setting to "Not Using".

1.Close the Project. 2.Reopen the project,and all ok. this is my expeirence.

move the #include statements outside the #if #end block

Rebuilding IntelliSense database solves the problem.

1. Close Visual Studio
2. Delete [SolutionName].sdf
3. Delete DllWrappers.opensdf
4. Delete ipch folder
5. Open Visual Studio

I had the same problem. My solution was to add a missing ';' at the end of a class definition. Although this does not seem to apply to your problem, others who come here with the same error might find this helpful.

This is probable a day late and a dollar short but I had the same error when I accidentally put my header file in a .cpp file instead of a .h file. I will post it though in case it can help someone.

I just added a referenct to the header file (#include "header.h") and it helped.

I found that my .h file was actually being treated as a .cpp file! Right click on the file in the Solution Explorer > All Configurations > Item Type: C/C++ header

Make sure the item type is not C/C++ compiler or other.

Once you add a .cpp file and have it include the header this error should go away. I've read some where else this is a bug.

I use Visual Studio to edit Linux projects. For me, the issue was present when I include string.h in my precompiled header file. It was caused by lines that have an __asm statement, for example:

__THROW __asm ("memchr") __attribute_pure__ __nonnull ((1));

The solution was to define the following macro under Project Properties, Configuration Properties, C/C++, Preprocessor, Preprocessor Defines:

__asm(x)=

In my case I was wrapping the whole .cpp file inside of #ifdef directive and getting this error.

The issue is, when using precompiled header, your standard precompiled header include needs to be outside of that!

For example:

#include "pch.h" // <- outside of any #if pragma directive

#ifdef EXAMPLE_DIRECTIVE

#include "another_header.h" // <- any other headers can be included inside

class AppState {}; // etc, your code here

#endif

Note that this issue can likely be also caused by some header you're including, which includes PCH header itself. If that's the case, just copy the import of PCH header from that file to the top of the file you're getting the error in, above the #if block.