Re: How to operate dynamicly allocated data

[Lindley M French <lfrench1 gmu edu>]

Well, the way that seems obvious to me would be to attach the newly allocated data in some way to the user_data pointer passed to the first callback, and have it accessible via the user_data pointer of the second callback as well.

In the simplest case, the pointer passed to the first would be the address of the pointer passed to the second.

----- Original Message -----
From: Daniel Lewandowski <dereach gmail com>
Date: Friday, February 22, 2008 4:30 pm
Subject: How to operate dynamicly allocated data

> Hi,
> I'd like to ask about idea how to make in program written in C/gtk
> operation on dynamic allocated data between few callback function.
> 
> I  have two buttons.
> On clicked first I call callback and inside this function I read data
> from file. Data is  allocated inside dynamic structure like this one:
> 
> X = g_new0 (gfloat, number_of_my_data_in_file);
> 	
> Now I'd like to have access to this data when I clicked other button
> later, in other callback function.
> 
> How to do this ?
> 
> 
> Daniel
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