+ case GDK_KEY_c:
+ case GDK_KEY_C:
+ pitch = SCORE_PITCH_C;
+ break;
+ case GDK_KEY_d:
+ case GDK_KEY_D:
+ pitch = SCORE_PITCH_D;
+ break;
+ case GDK_KEY_e:
+ case GDK_KEY_E:
+ pitch = SCORE_PITCH_E;
+ break;
+ case GDK_KEY_f:
+ case GDK_KEY_F:
+ pitch = SCORE_PITCH_F;
+ break;
+ case GDK_KEY_g:
+ case GDK_KEY_G:
+ pitch = SCORE_PITCH_G;
+ break;
+ case GDK_KEY_a:
+ case GDK_KEY_A:
+ pitch = SCORE_PITCH_A;
+ break;
+ case GDK_KEY_b:
+ case GDK_KEY_B:
+ pitch = SCORE_PITCH_B;
+ break;
+ }
+
+ if ((key->keyval >= GDK_KEY_A && key->keyval <= GDK_KEY_G) ||
+ (key->keyval >= GDK_KEY_a && key->keyval <= GDK_KEY_g))
+ {
+ score_note_t *note;
+
+ note = scherzo_add_note (scherzo, pitch, octave);
+ _judge_note (scherzo, note);
+ gtk_widget_queue_draw (scherzo->window);
+
+ return TRUE;
+ }
+
+
+ /* Allow an unhandled event to propagate to other handlers. */
+ return FALSE;
+}
+
+static int
+on_key_release_event (unused (GtkWidget *widget),
+ GdkEventKey *key,
+ void *user_data)
+{
+ scherzo_t *scherzo = user_data;
+ int octave = scherzo->challenge.note->octave;
+ score_pitch_t pitch;
+
+ switch (key->keyval) {
+ case GDK_KEY_c:
+ case GDK_KEY_C:
+ pitch = SCORE_PITCH_C;
+ break;
+ case GDK_KEY_d:
+ case GDK_KEY_D:
+ pitch = SCORE_PITCH_D;
+ break;
+ case GDK_KEY_e:
+ case GDK_KEY_E:
+ pitch = SCORE_PITCH_E;
+ break;
+ case GDK_KEY_f:
+ case GDK_KEY_F:
+ pitch = SCORE_PITCH_F;
+ break;
+ case GDK_KEY_g:
+ case GDK_KEY_G:
+ pitch = SCORE_PITCH_G;
+ break;
+ case GDK_KEY_a:
+ case GDK_KEY_A:
+ pitch = SCORE_PITCH_A;
+ break;
+ case GDK_KEY_b:
+ case GDK_KEY_B:
+ pitch = SCORE_PITCH_B;
+ break;
+ }
+
+ if ((key->keyval >= GDK_KEY_A && key->keyval <= GDK_KEY_G) ||
+ (key->keyval >= GDK_KEY_a && key->keyval <= GDK_KEY_g))
+ {
+ scherzo_remove_note (scherzo, pitch, octave);
+ _score_challenge (scherzo);
+ gtk_widget_queue_draw (scherzo->window);
+
+ return TRUE;