/usr/include/xfce4/libxfcegui4/xfce_systemtray.h is in libxfcegui4-dev 4.10.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (c) 2003-2004 Benedikt Meurer <benny@xfce.org>
* Copyright (c) 2003-2004 Olivier Fourdan <fourdan@xfce.org>
* All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* A complete system tray implementation. See the specification:
*
* http://www.freedesktop.org/standards/systemtray.html
*/
#ifndef __HAVE_XFCE_SYSTEM_TRAY_H__
#define __HAVE_XFCE_SYSTEM_TRAY_H__
#if defined(LIBXFCEGUI4_COMPILATION) || !defined(XFCE_DISABLE_DEPRECATED)
#include <glib.h>
#if defined (GTK_CHECK_VERSION) && GTK_CHECK_VERSION(2,2,0)
#include <gdk/gdkscreen.h>
#endif
#include <gtk/gtkwidget.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xmd.h>
G_BEGIN_DECLS
/*
* Tray icons can send "opcodes" to the system tray. These are X client
* messages, sent with NoEventMask, a message_type of _NET_SYSTEM_TRAY_OPCODE,
* and format 32.
*/
#define SYSTEM_TRAY_REQUEST_DOCK 0
#define SYSTEM_TRAY_BEGIN_MESSAGE 1
#define SYSTEM_TRAY_CANCEL_MESSAGE 2
typedef struct _XfceSystemTray XfceSystemTray;
typedef struct _XfceSystemTrayClass XfceSystemTrayClass;
#define XFCE_TYPE_SYSTEM_TRAY (xfce_system_tray_get_type())
#define XFCE_SYSTEM_TRAY(obj) \
G_TYPE_CHECK_INSTANCE_CAST(obj, xfce_system_tray_get_type(), \
XfceSystemTray)
#define XFCE_SYSTEM_TRAY_CLASS(klass) \
G_TYPE_CHECK_CLASS_CAST(klass, xfce_system_tray_get_type(), \
XfceSystemTrayClass)
#define XFCE_IS_SYSTEM_TRAY(obj) \
G_TYPE_CHECK_INSTANCE_TYPE(obj, xfce_system_tray_get_type())
#define XFCE_SYSTEM_TRAY_ERROR (xfce_system_tray_error_quark())
/* errors */
enum
{
XFCE_SYSTEM_TRAY_ERROR_GET_SELECTION_FAILED
};
struct _XfceSystemTray
{
GObject parent;
/*
* The specification requires three Atoms to be used by the system
* tray.
*/
struct
{
/* _NET_SYSTEM_TRAY_MESSAGE_DATA */
Atom message_data;
/* _NET_SYSTEM_TRAY_OPCODE */
Atom opcode;
/* _NET_SYSTEM_TRAY_Sn */
Atom selection;
}
atoms;
/* an invisible window */
GtkWidget *window;
/* list of client sockets */
GHashTable *sockets;
/* list of pending balloon messages */
GList *messages;
};
/*
* Description:
*
* message_new(tray, socket, id, timeout, text)
* message_clear(tray, socket, id)
*/
struct _XfceSystemTrayClass
{
GObjectClass parent;
void (*icon_docked) (XfceSystemTray *tray, GtkWidget *item);
void (*icon_undocked) (XfceSystemTray *tray, GtkWidget *item);
void (*selection_cleared) (XfceSystemTray *tray);
void (*message_new) (XfceSystemTray *tray, GtkWidget *item, guint id, guint timeout,
const gchar *text);
void (*message_clear) (XfceSystemTray *tray, GtkWidget *item, guint id);
};
/* get XfceSystemTray error source identifier */
GQuark xfce_system_tray_error_quark (void);
/* get XfceSystemTray object type identifier */
GType xfce_system_tray_get_type (void);
/* create a new system tray */
XfceSystemTray *xfce_system_tray_new (void);
/* register a system tray for a specific screen */
gboolean xfce_system_tray_register (XfceSystemTray *tray,
Screen *screen, GError **error);
/* unregister a system tray */
void xfce_system_tray_unregister (XfceSystemTray *tray);
/* check if a system tray is already running for the screen */
gboolean xfce_system_tray_check_running (Screen *screen);
G_END_DECLS
#endif /* !XFCE_DISABLE_DEPRECATED */
#endif /* !__HAVE_XFCE_SYSTEM_TRAY_H__ */
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