GMainContext with which the source is associated.
You can call this on a source that has been destroyed, provided
GMainContext it was attached to still exists (in which
case it will return that
GMainContext). In particular, you can
always call this function on the source returned from
g_main_current_source(). But calling this function on a source
GMainContext has been destroyed is an error.
GMainContext with which the
source is associated, or
NULL if the context has not
yet been added to a source.
|The data is owned by the instance.|
|The return value can be |