static member initialization

[high_flyer]

Hi,

I have the following case:
I have a static member variable (NOT const!), that should manage unique information shared by all class instances, and I would like to initialize that variable one time.
This is what I did:
Header:

class FrmPower : public QWidget
{
Q_OBJECT
 public:
     typedef enum { NONE=0,A,B,C,D } BUS;
 private:
  static BUS m_BorC;
  //rest of the class
};

class FrmPower : public QWidget
{
Q_OBJECT
 public:
     typedef enum { NONE=0,A,B,C,D } BUS;
 private:
  static BUS m_BorC;
  //rest of the class
};

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And in the implementation file (cpp) (in global scope):

FrmPower::BUS m_BorC = FrmPower::NONE;

FrmPower::BUS m_BorC = FrmPower::NONE;

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But I get multiple definition linking error for 'm_BorC' which I don't get, since it is not visible outside the implementation of FrmPower.

Any idea how to resolve this?

Thanks in advance.