Re: Gtk::Editable::on_insert_text

[Antonio Coralles <noche suapie reflex at>]

Antonio Coralles wrote:

> I just was thinking about the most elegant way of restricting the chars
> a user can enter into a Gtk::Entry. At first i thought I should do that
> by overriding on_changed() but then, after looking at the dokumentation
> for Gtk::Editable the functions
>
> virtual void  insert_text_vfunc (const Glib::ustring& text, int& position)
> virtual void  on_insert_text (const Glib::ustring& text, int* position)
>
> caught my attention. The problem is that these functions are completeley
> undocumented - especially I don't understand what i should do with int&
> / int* position - what happens when i change the value of
> position/*position ? Are these functions at least suitable for my
> purpose ? Should i call [when overriding] the base class routines if i
> want a char to be accepted and avoid that if i don't want that ?
Ok, after experimenting a bit I achieved what I wanted to do by 
overriding insert_text_vfunc. text is the text which would be inserted 
and position the position where inserting starts - which can be modified 
through &. If I want the insertion to take place I call the base class 
insert_text_vfunc. Eventually I can pass a modified string to that 
method ...
So the question that remains is what on_insert_text is for and why does 
it use int* instead of int& ?

Antonio