C++Builder method pointers (VCL)

//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "Unit1A.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
//#include <Vcl.ExtCtrls.hpp>
//#include <Vcl.ComCtrls.hpp>
#include <Vcl.Dialogs.hpp>
#include <map>
// *pragma push explicit rcti
#pragma explicit_rtti methods (__published, public) properties (__published, public)

class TTestClass : public TObject {
    String  FName;

    public :
        __property
        String  Name          =     { read = FName };
        void    DoGetRequest  ()    { ShowMessage( __FUNC__ ); }
        void    DoPostRequest ()    { ShowMessage( __FUNC__ ); }
};

typedef void (TTestClass::* TResourceFunc)();
typedef std::map <String,   TResourceFunc>     TResourceFuncsList;

void    f( TTestClass* tc, TResourceFunc rf )  {  (tc->*rf)();  }

TForm1* Form1;

__fastcall TForm1::TForm1(TComponent* Owner) : TForm(Owner)  { }


void __fastcall TForm1::Button1Click(TObject *Sender)  {

    TTestClass* tc = new TTestClass();
    //f( tc, &TTestClass::DoGetRequest  );
    //f( tc, &TTestClass::DoPostRequest );

    TResourceFuncsList rfl { {"Get Request",  &TTestClass::DoGetRequest},
                             {"Post Request", &TTestClass::DoPostRequest}
                           };
    f( tc, rfl["Get Request" ] );
    f( tc, rfl["Post Request"] );
}

// --- --- --- --- ---

/*
#ifndef Unit1AH
#define Unit1AH
//---------------------------------------------------------------------------
#include <System.Classes.hpp>
#include <Vcl.Controls.hpp>
#include <Vcl.StdCtrls.hpp>
#include <Vcl.Forms.hpp>

class TForm1 : public TForm
{
  __published:  // IDE-managed Components
      TButton*         Button1;
      void __fastcall  Button1Click (TObject*   Sender);
  public:       // User declarations
           __fastcall  TForm1       (TComponent* Owner);
};
extern PACKAGE TForm1* Form1;
#endif
*/