the priority of the idle source. Typically this will be in the range between G_PRIORITY_DEFAULT_IDLE and G_PRIORITY_HIGH_IDLE.
process to watch. On POSIX the pid of a child process. On Windows a handle for a process (which doesn't have to be a child).
data to pass to function
function to call when the idle is removed, or NULL
the ID (greater than 0) of the event source.
Sets a function to be called when the child indicated by pid exits, at the priority priority. If you obtain pid from g_spawn_async() or g_spawn_async_with_pipes() you will need to pass G_SPAWN_DO_NOT_REAP_CHILD as flag to the spawn function for the child watching to work. Note that on platforms where GPid must be explicitly closed (see g_spawn_close_pid()) pid must not be closed while the source is still active. Typically, you will want to call g_spawn_close_pid() in the callback function for the source. GLib supports only a single callback per process id. This internally creates a main loop source using g_child_watch_source_new() and attaches it to the main loop context using g_source_attach(). You can do these steps manually if you need greater control. Since 2.4