I am using an unmanaged pointer and need to take the address of this
and pass it to a function (a pointer to a pointer). If the pointer is
defined as a global variable it will work, however if I move it into a
class variable I get teh following error:

error C2440: 'type cast' : cannot convert from 'IDevMgr *__gc * ' to
'IDevMgr ** '

Basically I want to go from:

IDevMgr *gDev;

public __gc class CMyClass
{
};

to:

public __gc class CMyClass
{
  private:
     IDevMgr *m_Dev;
};

and then do a:

MyFunc(&m_Dev);

from a member function in CMyClass. MyFunc(&gDev) will work fine
though.