problem class Singleton

Bonjour,

Je cherche a cr�er une classe singleton.
J'ai suivi le tuto mais je rencontre une erreur:

Voici le .h

Code:

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class Ressources_Manager { public: static Ressources_Manager& Instance();   private: Ressources_Manager& operator= (const Ressources_Manager&){} Ressources_Manager (const Ressources_Manager&){}   static Ressources_Manager& m_instance; Ressources_Manager(); virtual ~Ressources_Manager();   sf::Texture H_Sp_Prairie; sf::Image Img_H_Prairie;   void Load_Textures(); void Load_Images(); };

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et le .cpp

Code:

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Ressources_Manager Ressources_Manager::m_instance=Ressources_Manager();   Ressources_Manager::Ressources_Manager() {   Load_Images(); Load_Textures(); }   Ressources_Manager::~Ressources_Manager() {   }   Ressources_Manager& Ressources_Manager::Instance() { return m_instance; }   void Ressources_Manager::Load_Images() { Img_H_Prairie.loadFromFile("Image/HexaTestSize.bmp"); Img_H_Prairie.createMaskFromColor(sf::Color(255,255,255)); }   void Ressources_Manager::Load_Textures() { H_Sp_Prairie.loadFromImage(Img_H_Prairie); }

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et l'erreur affich�e est:

In file included from ..\RessourcesManager.cpp:8:0:
..\RessourcesManager.h: In member function 'itpro::res::Ressources_Manager& itpro::res::Ressources_Manager::operator=(const itpro::res::Ressources_Manager&)':
..\RessourcesManager.h:23:60: warning: no return statement in function returning non-void [-Wreturn-type]
..\RessourcesManager.cpp: At global scope:
..\RessourcesManager.cpp:13:41: error: conflicting declaration 'itpro::res::Ressources_Manager itpro::res::Ressources_Manager::m_instance'
In file included from ..\RessourcesManager.cpp:8:0:
..\RessourcesManager.h:26:30: error: 'itpro::res::Ressources_Manager::m_instance' has a previous declaration as 'itpro::res::Ressources_Manager& itpro::res::Ressources_Manager::m_instance'
..\RessourcesManager.cpp:13:41: error: declaration of 'itpro::res::Ressources_Manager& itpro::res::Ressources_Manager::m_instance' outside of class is not definition [-fpermissive]
..\RessourcesManager.cpp:13:71: error: invalid initialization of non-const reference of type 'itpro::res::Ressources_Manager&' from an rvalue of type 'itpro::res::Ressources_Manager'


Une id�e?

Merci

Mea culpa,

Dans mon.h :
static Ressources_Manager& m_instance;

au lieu de:
static Ressources_Manager m_instance;