Solved

How to declare my TList->sort function in (Class)header?

Posted on 2009-06-29
3
723 Views
Last Modified: 2013-11-17
I'm using Borland C++ Builder and I've written my own sort function to sort a TList.

The code is:

int __fastcall my_sort_function(void *Item1, void *Item2){

      ... compare something
      return(result);
}

Im using it to do: MySortList->Sort(my_sort_function);

That works well!

The Question is:
How to declare
int __fastcall my_sort_function(void *Item1, void *Item2)
in the header file to make it a class member?

Reason: I'd like to give "my_sort_function" access to some class members.

This may be a stupid question? But I'm very new to C++ and learn the basic concepts now. Can anyone help me?


Thanks in advance!
0
Comment
Question by:hasnpapa
  • 2
3 Comments
 
LVL 31

Accepted Solution

by:
Zoppo earned 500 total points
ID: 24737200
Hi hasnpapa,

you'll have to implement your function as a 'static' method. Then the function can even access i.e. protected members. In the function you have to cast the void-pointers to pointers of the class.


Hope that helps,

ZOPPO
0
 

Author Closing Comment

by:hasnpapa
ID: 31597974
Thnks a lot - that helps me out! :-)
0
 
LVL 31

Expert Comment

by:Zoppo
ID: 24743565
You're welcome ...

have a nice day,

best regards,

ZOPPO
0

Featured Post

Free Tool: Postgres Monitoring System

A PHP and Perl based system to collect and display usage statistics from PostgreSQL databases.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Eclipse. How to move up/down source folders 4 94
VS2015 Redefinition errors 4 67
Installshield for Embarcadero EX 10.1 Berlin 4 59
DCT of  2D array using fftw in c++ 9 60
Here is a helpful source code for C++ Builder programmers that allows you to manage and manipulate HTML content from C++ code, while also handling HTML events like onclick, onmouseover, ... Some objects defined and used in this source include: …
Basic understanding on "OO- Object Orientation" is needed for designing a logical solution to solve a problem. Basic OOAD is a prerequisite for a coder to ensure that they follow the basic design of OO. This would help developers to understand the b…
The viewer will learn how to use and create new code templates in NetBeans IDE 8.0 for Windows.
The viewer will be introduced to the member functions push_back and pop_back of the vector class. The video will teach the difference between the two as well as how to use each one along with its functionality.

791 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question