Re: Text insertion problem

[Paolo Molaro <lupus ximian com>]

On 02/21/01 Gregory S Hayes wrote:
> > When inserting text into a textbox I get the following error:
> >
> > Gtk-CRITICAL **: file gtktext.c: line 879 (gtk_text_set_point):
> > assertion `index <= TEXT_LENGTH (text)' failed.
>
> I figured it out, see below:
>
>
> sub on_fileselection_ok_button_clicked {
>         my $filename = $fileselection->get_filename;
>         my $index = 0;
>         $textbox->freeze;
>         $textbox->delete_text;
>         open (FILE, $filename);
>         while (<FILE>) {
>                 $textbox->insert_text($_, $index);
>                 $index = $textbox->get_point();
>         }
>         $textbox->thaw;
> }

When I coded Gtk::Editable::text_insert() I assumed it accepted
-1 as the index to mean end of buffer like all the other gtk_editable_*()
functions. This would be a useful DWIM fuctionality. It turn out it is a 
bit inconsistent and Owen doesn't want to change it in gtk+ 1.2.x for 
compatibility reasons (it will be fixed in Gtk 2.0, though).
I just fixed cvs to do the right thing anyway fro Gtk::Entry and Gtk::Text 
widgets.
Also note that insert_text() returns the new position, so you can just use:

        $index = $textbox->insert_text($_, $index);

instead of calling get_point() later.

lupus

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