GPtrArray has no insert?

[Martin Kalbfuß <ma kalbfuss web de>]

Hi,

I make a library to handle group of bitmaps for the allegro lib. The
allegro bitmap type is a pointer type.

So a GPtrArray would be the right choice. But I can't see any insertion
function like the GArray has. Is such a function not present or is it
simply not documented?

And what happens when I try to access a non existent element with an out
of range index? The documentation says nothing about this?

Thanks,
Martin