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

Posted on 2009-06-29
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Medium Priority
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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!
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Question by:hasnpapa
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3 Comments
 
LVL 31

Accepted Solution

by:
Zoppo earned 2000 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
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Author Closing Comment

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

Expert Comment

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

have a nice day,

best regards,

ZOPPO
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