Multiple definition

[Arjan B]

Ik krijg in mijn project een fout "multiple definition of 'AGE_ErrorString' ".
Nu zou ik dan denken dat ik ergens AGE_ErrorString twee keer definieer of dat ik twee headers elkaar laat includen ofzo..
Maar ik zie nergens waar ik dat doe

Ziet iemand misschien waarom hij zo'n fout zou geven?

AGE.h

 /* Include this only once */
#ifndef AGE_H
#define AGE_H

 /* Don't include MFC */
#define WIN32_LEAN_AND_MEAN
 /* Windows header */
#include <windows.h>
 /* AGE typedef header */
#include "AGE_Types.h"
 /* AGE error header */
#include "AGE_Error.h"

..........

#endif

AGE_Types.h

/* Include this only once */
#ifndef AGE_TYPES_H
#define AGE_TYPES_H

 /* Typedefs */
typedef signed   char  AGEint8;
typedef unsigned char  AGEuint8;
typedef signed   short AGEint16;
typedef unsigned short AGEuint16;
typedef signed   long  AGEint32;
typedef unsigned long  AGEuint32;
typedef signed   int   AGEint;
typedef unsigned int   AGEuint;
typedef          float AGEfloat;
typedef          bool  AGEbool;
typedef          char* AGEstring;

#endif

main.cpp

 /* Don't include MFC */
#define WIN32_LEAN_AND_MEAN
 /* Windows header */
#include <windows.h>
 /* AGE header */
#include "AGE.h"

.................

AGE_Error.h

 /* Include this only once */
#ifndef AGE_ERROR_H
#define AGE_ERROR_H

 /* AGE typedef header */
#include "AGE.h"

 /* Return error enumeration */
enum AGE_Error
{
  AGE_NoError = 0,
  AGE_ErrorRegisterClass,
  AGE_ErrorCreateWindow
};

 /* String array holding explanation about the error */
AGEstring AGE_ErrorString[3] =
{
  "No error has occurred.\n",
  "Could not register the window class.\n",
  "Could not create the window.\n"
};

#endif

AGE.cpp

 /* Complement header file */
#include "AGE.h"

...................

Alvast bedankt ^^.


----------------------------------


Edit: Snap nu eindelijk de debugger van Dev-C++ een beetje.. Hij geeft aan dat die fout ergens in de constructor van AGE_Window zit..

 /* Include this only once */
#ifndef AGE_H
#define AGE_H

 /* Don't include MFC */
#define WIN32_LEAN_AND_MEAN
 /* Windows header */
#include <windows.h>
 /* AGE typedef header */
#include "AGE_Types.h"
 /* AGE error header */
#include "AGE_Error.h"

 /* Window procedure declaration */
LRESULT CALLBACK WindowProcedure(HWND hWnd, UINT iMsg, WPARAM wParam, LPARAM lParam);

 /* AGE_Window class */
class AGE_Window
{
  public:
    AGE_Window();
    ~AGE_Window();
    AGE_Error Init(HINSTANCE hInstance, AGEstring szCaption, AGEuint16 iWidth, AGEuint16 iHeight,
                   AGEuint16 iBPP, const AGEstring szClassName = "AGE_App" );
  private:
    HWND      m_hWnd;
    AGEstring m_Caption;
    AGEuint16 m_iScreenWidth;
    AGEuint16 m_iScreenHeight;
    AGEuint16 m_iScreenBPP;
};

#endif

AGE.cpp

/* Complement header file */
#include "AGE.h"

 /* Constructor */
AGE_Window::AGE_Window()
{    //  <-------------------------- Daar geeft ie fout
   /* Init members */
  m_hWnd          = NULL;
  m_Caption       = "An AGE application";
  m_iScreenWidth  = 640;
  m_iScreenHeight = 480;
  m_iScreenBPP    = 16;
}

 

[Arjan B]

Een reactie op een ander forum heeft voor een oplossing gezorgd ^^:

Gepost door D Drmmr:
In het bestand AGE_Error.h definieer je de variabele AGE_ErrorString. Je moet hem in het .h bestand alleen declareren en in het .cpp bestand pas definiëren.

// .h file
extern AGEstring AGE_ErrorString[3];
// .cpp file
AGEstring AGE_ErrorString[3] =
{
  "No error has occurred.\n",
  "Could not register the window class.\n",
  "Could not create the window.\n"
};