Reports an error in an idle function. Similar to g_simple_async_report_gerror_in_idle(), but takes over the caller's ownership of error, so the caller does not have to free it any more.
a GObject, or NULL
a GAsyncReadyCallback
user data passed to callback.
the GError to report
Deprecated: Use Task.reportError.
2.28
Reports an error in an idle function. Similar to g_simple_async_report_gerror_in_idle(), but takes over the caller's ownership of error, so the caller does not have to free it any more.