Queries the events reported for the fd corresponding to
source during the last poll.
The return value of this function is only defined when the function
is called from the check or dispatch functions for
This API is only intended to be used by implementations of
Do not call this API on a
GSource that you did not create.
As the name suggests, this function is not available on Windows.
Available since: 2.36
The tag from
The data is owned by the caller of the method.