System [00 00 00 00 00 00 00 00 04 00 00 00 00 00 00 00] 1.0.3300.0 1.0.5000.0 2.0.0.0 4.0.0.0 Gtk# is thread aware, but not thread safe; See the <link location="node:gtk-sharp/programming/threads">Gtk# Thread Programming</link> for details. System.Delegate System.Runtime.InteropServices.ComVisible(true) System.Object To be added. To be added. To be added. provides a mechanism to publish services that you can request to have created when needed, rather than the service being created immediately when the designer loads. You can use a callback function if the service is not essential and may not be used. A service published by using a does not use as many additional resources if it is not requested and created. To use a callback function to publish your service, pass a to the method of an .

Provides a callback mechanism that can create an instance of a service on demand.