如何在数组中存储指向比较std :: sort函数的指针？

Question

我需要在课堂上进行排序：

typedef bool (*fcomp)(int,int);

class mf : public QAbstractTableModel{Q_OBJECT
public:

  //horisontalHeader struct
  struct hs {
    QString h;//column name
    Qt::AlignmentFlag a;//align
    fcomp s;//compare function for std::sort
  };

  //data 
  hs h[cc]={
  {t("Function"),Qt::AlignCenter,cf},
  {t("Errors"),Qt::AlignCenter,cer}
  };

  bool cf(int li,int lj){return
    (QString::localeAwareCompare(tf->r[li].f_name,tf->r[lj].f_name)<0);}

  bool cer(int li,int lj){return
    ((tf->r[li].f_er)<(tf->r[lj].f_er));}

  void dosort(int column){
       std::sort(
       i.begin(),
       i.begin()+rowCount(),
       h[column].s);
  }

如何声明比较函数将它们存储在数组中？

编译错误：

cannot convert 'bool (mf::*)(int, int)' to 
'fcomp {aka bool (*)(int, int)}' in initialization

在我使用How to do one quick sort procedure for different structures之前的方法之前，我不喜欢它：

// compare func for column 0
struct fcmp0{bool operator()(mNrow * li,mNrow * lj){
return   (QString::localeAwareCompare(*(li->f_name),*(lj->f_name))<0);
}} f0;

//compare func for column 1
struct fcmp1{bool operator()(mNrow * li,mNrow * lj){
return  ((li->f_er)<(lj->f_er));
}} f1;

if (column==0) {std::sort(r.begin(),r.end(),f0);}
else if (column==1) {std::sort(r.begin(),r.end(),f1);}