Specifies the type of function passed to g_io_add_watch() or g_io_add_watch_full(), which is called when the requested condition on a #GIOChannel is satisfied.
the function should return %FALSE if the event source should be removed
See Implementation
Specifies the type of function passed to g_io_add_watch() or g_io_add_watch_full(), which is called when the requested condition on a #GIOChannel is satisfied.