1 <!-- ##### SECTION Title ##### -->
4 <!-- ##### SECTION Short_Description ##### -->
5 Callbacks on file descriptors
7 <!-- ##### SECTION Long_Description ##### -->
9 The functions in this section are used to establish
10 callbacks when some condition becomes true for
11 a file descriptor. They are currently just wrappers around
12 the <link linkend="glib-IO-Channels">IO Channel</link>
16 <!-- ##### SECTION See_Also ##### -->
21 <term><link linkend="glib-The-Main-Event-Loop">GLib Main Loop</link></term>
22 <listitem><para>The main loop in which input callbacks run.</para></listitem>
26 <term><link linkend="glib-IO-Channels">IO Channels</link></term>
27 <listitem><para>A newer and more flexible way of doing IO
28 callbacks.</para></listitem>
34 <!-- ##### SECTION Stability_Level ##### -->
37 <!-- ##### FUNCTION gdk_input_add_full ##### -->
48 <!-- ##### ENUM GdkInputCondition ##### -->
50 A set of bit flags used to specify conditions for which
51 an input callback will be triggered. The three members
52 of this enumeration correspond to the @readfds,
53 @writefds, and @exceptfds arguments to the
54 <function>select</function> system call.
57 @GDK_INPUT_READ: the file descriptor has become available for reading.
58 (Or, as is standard in Unix, a socket or pipe was closed
59 at the other end; this is the case if a subsequent read
60 on the file descriptor returns a count of zero.)
61 @GDK_INPUT_WRITE: the file descriptor has become available for writing.
62 @GDK_INPUT_EXCEPTION: an exception was raised on the file descriptor.
64 <!-- ##### USER_FUNCTION GdkInputFunction ##### -->
66 A callback function that will be called when some condition
70 @data: the user data passed to gdk_input_add() or gdk_input_add_full().
71 @source: the source where the condition occurred.
72 @condition: the triggering condition.
75 <!-- ##### USER_FUNCTION GdkDestroyNotify ##### -->
77 A callback function called when a piece of user data is
78 no longer being stored by GDK. Will typically free the
79 structure or object that @data points to.
85 <!-- ##### FUNCTION gdk_input_add ##### -->
95 <!-- ##### FUNCTION gdk_input_remove ##### -->
97 Remove a callback added with gdk_input_add() or
101 @tag: the tag returned when the callback was set up.