-typedef void (*AccessibleEventListenerCB) (AccessibleEvent *event,
- void *user_data);
-typedef SPIBoolean (*AccessibleKeystrokeListenerCB) (AccessibleKeystroke *stroke,
- void *user_data);
+typedef void (*AccessibleEventListenerCB) (const AccessibleEvent *event,
+ void *user_data);
+typedef SPIBoolean (*AccessibleKeystrokeListenerCB) (const AccessibleKeystroke *stroke,
+ void *user_data);