Package: gtk

Interface gtk:editable

Superclasses

gobject:object, common-lisp:standard-object, common-lisp:t

Documented Subclasses

gtk:entry, gtk:search-entry, gtk:spin-button

Direct Slots

None

Details

The gtk:editable interface is an interface which should be implemented by text editing widgets, such as the gtk:entry widget and the gtk:spin-button widget. It contains functions for generically manipulating an editable widget, a large number of action signals used for key bindings, and several signals that an application can connect to to modify the behavior of a widget.

Examples

As an example of the latter usage, by connecting the following handler to the "insert-text" signal, an application can convert all entry into a widget into uppercase. 
;; Handler for the "insert-text" signal
(setf handlerid
      (g:signal-connect entry "insert-text"
          (lambda (editable text length position)
            (g:signal-handler-block editable handlerid)
            (gtk:editable-insert-text editable
                                      (string-upcase text)
                                      (cffi:mem-ref position :intptr))
            (g:signal-stop-emission editable "insert-text")
            (g:signal-handler-unblock editable handlerid))))

Signal Details

The "changed" signal 
lambda (editable)    :run-last
editable
The gtk:editable widget that received the signal.
The signal is emitted at the end of a single user visible operation on the contents of the gtk:editable widget. For example, a paste operation that replaces the contents of the selection will cause only one signal emission, even though it is implemented by first deleting the selection, then inserting the new content, and may cause multiple "notify::text" signals to be emitted.
The "delete-text" signal 
lambda (editable start end)    :run-last
editable
The gtk:editable widget that received the signal.
start
The integer for the start position.
end
The integer for the end position.
The signal is emitted when text is deleted from the widget by the user. The default handler for this signal will normally be responsible for deleting the text, so by connecting to this signal and then stopping the signal with the g:signal-stop-emission function, it is possible to modify the range of deleted text, or prevent it from being deleted entirely. The start and end parameters are interpreted as for the gtk:editable-delete-text function.
The "insert-text" signal 
lambda (editable text length pos)    :run-last
editable
The gtk:editable widget that received the signal.
text
The string for the new text to insert.
length
The integer for the length of the new text, in bytes, or -1 if text is nul-terminated.
pos
The pointer to an integer with the position, in characters, at which to insert the new text. This is an in-out parameter. After the signal emission is finished, it should point after the newly inserted text. The Lisp value of pos is returned by the (cffi:mem-ref pos :intptr) call.
The signal is emitted when text is inserted into the widget by the user. The default handler for this signal will normally be responsible for inserting the text, so by connecting to this signal and then stopping the signal with the g:signal-stop-emission function, it is possible to modify the inserted text, or prevent it from being inserted entirely.
 

Inherited Slot Access Functions

g:object-has-reference
g:object-pointer

See also

gtk:entry
gtk:spin-button
2025-07-08