Gtk2::Editable(3) User Contributed Perl Documentation Gtk2::Editable(3)

Gtk2::Editable - wrapper for GtkEditable

Glib::Interface
+----Gtk2::Editable

  • $start_pos (integer)
  • $end_pos (integer)

$editable->delete_text ($start_pos, $end_pos)

  • $start_pos (integer)
  • $end_pos (integer)

$editable->set_editable ($is_editable)

$is_editable (boolean)

  • $new_text (string)
  • ... (list)

$editable->set_position ($position)

$position (integer)

$editable->select_region ($start, $end)

  • $start (integer)
  • $end (integer)

Returns integers, start and end.

The "insert-text" signal handler can optionally alter the text to be inserted. It may

  • Return no values for no change. Be sure to end with an empty "return".
    sub my_insert_text_handler {
      my ($widget, $text, $len, $pos, $userdata) = @_;
      print "inserting '$text' at char position '$pos'\n";
      return;  # no values
    }
    
  • Return two values "($text, $pos)" which are the new text and character position.
    sub my_insert_text_handler {
      my ($widget, $text, $len, $pos, $userdata) = @_;
      return (uc($text), $pos);  # force to upper case
    }
    
  • Return no values and modify the text in $_[1] and/or position in $_[3]. For example,
    sub my_insert_text_handler {
      $_[1] = uc($_[1]);   # force to upper case
      $_[3] = 0;           # force position to the start
      return;  # no values
    }
    

Note that currently in a Perl subclass of a "Gtk2::Editable" widget, a class closure (ie. class default signal handler) for "insert-text" does not work this way. It instead sees the C level "($text, $len, $pos_pointer)", where $pos_pointer is a machine address and cannot be used easily. Hopefully this will change in the future. A "signal_chain_from_overridden" with the args as passed works, but for anything else the suggestion is to use a "signal_connect" instead.

Gtk2, Glib::Interface

Copyright (C) 2003-2011 by the gtk2-perl team.

This software is licensed under the LGPL. See Gtk2 for a full notice.

2022-05-29 perl v5.36.0