of this enumeration correspond to the @readfds,
@writefds, and @exceptfds arguments to the
<function>select</function> system call.
+</para>
@GDK_INPUT_READ: the file descriptor has become available for reading.
(Or, as is standard in Unix, a socket or pipe was closed
at the other end; this is the case if a subsequent read
on the file descriptor returns a count of zero.)
-
@GDK_INPUT_WRITE: the file descriptor has become available for writing.
-
@GDK_INPUT_EXCEPTION: an exception was raised on the file descriptor.
<!-- ##### USER_FUNCTION GdkInputFunction ##### -->