glib-sharp 2.10.0.0 Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details. Exception emitted by GError receipt from native methods. When a native method takes a GError parameter to report failures in method invocation, if the GError parameter is set after method invocation this Exception is thrown to report the error. System.Exception Constructor Internal constructor. a handle to the native GError pointer. This constructor is public so that generated code in assemblies outside of glib-sharp.dll can access it, but it should not be necessary to use it from application code.