Its 'state' field is of type GdkPropertyState.
https://bugzilla.gnome.org/show_bug.cgi?id=677775
* <function>XSendEvent</function>).
* @atom: the property that was changed.
* @time: the time of the event in milliseconds.
- * @state: whether the property was changed (%GDK_PROPERTY_NEW_VALUE) or
- * deleted (%GDK_PROPERTY_DELETE).
+ * @state: (type GdkPropertyState): whether the property was changed
+ * (%GDK_PROPERTY_NEW_VALUE) or deleted (%GDK_PROPERTY_DELETE).
*
* Describes a property change on a window.
*/