Re: gtk_tree_model_get() malloc/free question

[Evan Martin <martine cs washington edu>]

On Sun, Dec 22, 2002 at 09:44:11PM -0500, Mike wrote:
> But I'm not sure that tells me if I need to g_malloc "place_string_here"
> and free it when I'm done or if I'm going to be passed a copy of the
> string that I need to free afterwards or if I'm passed a copy of the
> pointer that I ignore when I'm done with it. I've tried it by both
> allocating memory and freeing it and by just passing it a pointer and
> both *seem* to work so I'm not real clear on how I should handle it.

You're passing in a pointer to a gchar* (a gchar**), so it's actually
changing your variable.  If you did something like this:

char *foo = g_malloc(...);
gtk_tree_model_get(..., &foo, ...);
// at this point foo no longer points to the allocated memory.

If the function were the sort that expected a preallocated buffer, it
would take a pointer to the buffer as an argument: a plain char*.

-- 
      Evan Martin
martine cs washington edu
  http://neugierig.org