diff --git a/contact.scm b/contact.scm
index 2e77c7c..9fe193b 100644
--- a/contact.scm
+++ b/contact.scm
@@ -14,6 +14,7 @@
 ;; along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 (import (chicken io)
+        (chicken string)
         qt-light)
 
 
@@ -47,11 +48,36 @@
 
 ;; Connect callback functions to widgets’ signals.
 (define (window-callbacks window)
-  (let ([file→exit (qt:find window "actionQuit")])
+  (let* ([file→exit (qt:find window "actionQuit")])
+    ;; We connect to https://doc.qt.io/qt-6/qaction.html#triggered
     (if file→exit
         (qt:connect
          file→exit "triggered()"
-         (qt:receiver exit)))))
+         (qt:receiver exit))))
+  (textbox-callbacks window))
+
+
+;; Connect a text-printing callback to each textbox.
+(define (textbox-callbacks window)
+  (let* ([property-names
+          '("address" "city" "company" "county" "eMail" "fax"
+            "homePhone" "name" "nickname" "state" "url"
+            "workPhone" "zip")]
+         [textboxes
+          ;; The texbox widgets are all named like “countryLineEdit”.
+          (map (lambda (property)
+                 (qt:find window (conc property "LineEdit")))
+               property-names)])
+    ;; Cycle through each textbox, connecting them to a callback that prints
+    ;; their contents each time you type in text.
+    (map (lambda (textbox)
+           (if textbox
+               ;; We connect to https://doc.qt.io/qt-6/qlineedit.html#textChanged
+               ;; … and print the value of https://doc.qt.io/qt-6/qlineedit.html#text-prop
+               (qt:connect textbox "textChanged(QString)"
+                           (qt:receiver
+                            (lambda () (print (qt:property textbox "text")))))))
+         textboxes)))
 
 
 (init)