C / C++ / MFC

class MyClass
{
private:
  typedef std::map<UINT,MyClass *> MapFromIdToMyClass
 
  static MapFromIdToMyClass idToMyClass;
protected:
  UINT SetTimer(UINT uElapse)
  {
    UINT id=::SetTimer(NULL,0,uElapse,staticTimerProc);
    if(id){
      idToMyClass[id]=this;
    }
    return id;
  }
 
  BOOL KillTimer(UINT id)
  {
    MapFromIdToMyClass::iterator it=idToMyClass.find(id);
    assert(it!=idToMyClass.end());
    if(!::KillTimer(NULL,id)) return FALSE;
    idToMyClass.erase(it);
    return TRUE;
  }
 
  static VOID CALLBACK staticTimerProc(HWND,UINT,UINT id,DWORD dwTime)
  {
    MapFromIdToMyClass::iterator it=idToMyClass.find(id);
    assert(it!=idToMyClass.end());
    (it->second)->TimerProc(id,dwTime);
  }
 
  void TimerProc(UINT id,DWORD dwTime)
  {
    ... //your stuff here
  }
  ...
);