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Need a little help with Delphi to C++ conversion

 
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Csimbi
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Joined: 14 Jul 2007
Posts: 3331
PostPosted: Sat Feb 23, 2013 12:13 am    Post subject: Need a little help with Delphi to C++ conversion Reply with quote
Hi all,
How do I convert this Pascal code to C++?
In specific, the 'function (...)' part;.

Code:
procedure TItems.Sort(Compare: TItemSortCompare);
begin
  if (List<>nil) and (Count>1) then
    QSort(List, 0, Count-1,
      function(Item1, Item2: Pointer): Integer
      begin
        Result := Compare(Item1, Item2);
      end);

This is how far I got, but the compiler won't eat it:
Code:
void __fastcall TItems::Sort(TItemSortComparator fCompare)
{
  if (List!=NULL && Count>1)
    QSort(List, 0, iCount-1,
      int __fastcall (TItemPointer *Item1, TItemPointer* Item2)
      {
        return fCompare(Item1, Item2);
      }
}


Thanks!
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mgr.inz.Player
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PostPosted: Sat Feb 23, 2013 7:58 am    Post subject: Reply with quote
Post whole pascal code.
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Csimbi
I post too much
Reputation: 97

Joined: 14 Jul 2007
Posts: 3331
PostPosted: Sat Feb 23, 2013 9:06 am    Post subject: Reply with quote
It's not my code, so I'd rather not. But, that's the whole procedure, I just missed the last "end;" from it.
All I need to know is how the QSort call would be done in C++.
Thanks!
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mgr.inz.Player
I post too much
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Joined: 07 Nov 2008
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PostPosted: Sat Feb 23, 2013 9:26 am    Post subject: Reply with quote
remove that __fastcall

or something like this:
Code:
int (__fastcall *pfComparator)(TItemPointer*, TItemPointer*);

int __fastcall comparator(TItemPointer* Item1, TItemPointer* Item1)
{
  return fCompare(Item1, Item2);
}

void __fastcall TItems::Sort(TItemSortComparator fCompare)
{
  if (List!=NULL && Count>1)
  {
    pfComparator = &comparator;
    QSort(List, 0, iCount-1, pfComparator);
  }
}

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Csimbi
I post too much
Reputation: 97

Joined: 14 Jul 2007
Posts: 3331
PostPosted: Wed Feb 27, 2013 10:19 pm    Post subject: Reply with quote
Worked, thanks!
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