2 // Generated by gtkmmproc -- DO NOT MODIFY!
3 #ifndef _GLIBMM_IOCHANNEL_H
4 #define _GLIBMM_IOCHANNEL_H
10 /* Copyright (C) 2002 The gtkmm Development Team
12 * This library is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU Library General Public
14 * License as published by the Free Software Foundation; either
15 * version 2 of the License, or (at your option) any later version.
17 * This library is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * Library General Public License for more details.
22 * You should have received a copy of the GNU Library General Public
23 * License along with this library; if not, write to the Free
24 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include <glibmm/error.h>
29 #include <glibmm/main.h>
30 #include <glibmm/refptr.h>
31 #include <glibmm/ustring.h>
32 #include <glib/gtypes.h>
35 #include <glibmmconfig.h>
37 GLIBMM_USING_STD(string)
39 #ifndef DOXYGEN_SHOULD_SKIP_THIS
40 extern "C" { typedef struct _GIOChannel GIOChannel; }
50 /** @addtogroup glibmmEnums Enums and Flags */
53 * @ingroup glibmmEnums
64 * @ingroup glibmmEnums
76 * @ingroup glibmmEnums
77 * @par Bitwise operators:
78 * <tt>%IOFlags operator|(IOFlags, IOFlags)</tt><br>
79 * <tt>%IOFlags operator&(IOFlags, IOFlags)</tt><br>
80 * <tt>%IOFlags operator^(IOFlags, IOFlags)</tt><br>
81 * <tt>%IOFlags operator~(IOFlags)</tt><br>
82 * <tt>%IOFlags& operator|=(IOFlags&, IOFlags)</tt><br>
83 * <tt>%IOFlags& operator&=(IOFlags&, IOFlags)</tt><br>
84 * <tt>%IOFlags& operator^=(IOFlags&, IOFlags)</tt><br>
88 IO_FLAG_APPEND = 1 << 0,
89 IO_FLAG_NONBLOCK = 1 << 1,
90 IO_FLAG_IS_READABLE = 1 << 2,
91 IO_FLAG_IS_WRITEABLE = 1 << 3,
92 IO_FLAG_IS_SEEKABLE = 1 << 4,
93 IO_FLAG_GET_MASK = 0x0,
94 IO_FLAG_SET_MASK = 0x1
97 /** @ingroup glibmmEnums */
98 inline IOFlags operator|(IOFlags lhs, IOFlags rhs)
99 { return static_cast<IOFlags>(static_cast<unsigned>(lhs) | static_cast<unsigned>(rhs)); }
101 /** @ingroup glibmmEnums */
102 inline IOFlags operator&(IOFlags lhs, IOFlags rhs)
103 { return static_cast<IOFlags>(static_cast<unsigned>(lhs) & static_cast<unsigned>(rhs)); }
105 /** @ingroup glibmmEnums */
106 inline IOFlags operator^(IOFlags lhs, IOFlags rhs)
107 { return static_cast<IOFlags>(static_cast<unsigned>(lhs) ^ static_cast<unsigned>(rhs)); }
109 /** @ingroup glibmmEnums */
110 inline IOFlags operator~(IOFlags flags)
111 { return static_cast<IOFlags>(~static_cast<unsigned>(flags)); }
113 /** @ingroup glibmmEnums */
114 inline IOFlags& operator|=(IOFlags& lhs, IOFlags rhs)
115 { return (lhs = static_cast<IOFlags>(static_cast<unsigned>(lhs) | static_cast<unsigned>(rhs))); }
117 /** @ingroup glibmmEnums */
118 inline IOFlags& operator&=(IOFlags& lhs, IOFlags rhs)
119 { return (lhs = static_cast<IOFlags>(static_cast<unsigned>(lhs) & static_cast<unsigned>(rhs))); }
121 /** @ingroup glibmmEnums */
122 inline IOFlags& operator^=(IOFlags& lhs, IOFlags rhs)
123 { return (lhs = static_cast<IOFlags>(static_cast<unsigned>(lhs) ^ static_cast<unsigned>(rhs))); }
126 /** Exception class for IOChannel errors.
128 class IOChannelError : public Glib::Error
144 IOChannelError(Code error_code, const Glib::ustring& error_message);
145 explicit IOChannelError(GError* gobject);
148 #ifndef DOXYGEN_SHOULD_SKIP_THIS
150 static void throw_func(GError* gobject);
151 friend void wrap_init(); // uses throw_func()
156 #ifndef DOXYGEN_SHOULD_SKIP_THIS
157 class GlibmmIOChannel;
160 /** IOChannel aims to provide portable I/O support for files, pipes
161 * and sockets, and to integrate them with the GLib main event loop.
163 * Note that IOChannels implement an automatic implicit character set
164 * conversion to the data stream, and usually will not pass by default
165 * binary data unchanged. To set the encoding of the channel, use e.g.
166 * set_encoding("ISO-8859-15"). To set the channel to no encoding, use
167 * set_encoding() without any arguments.
169 * You can create an IOChannel with one of the static create methods, or
170 * implement one yourself, in which case you have to 1) override all
171 * _vfunc() members. 2) set the GIOChannel flags in your constructor.
173 * @note This feature of being able to implement a custom Glib::IOChannel is
174 * deprecated in glibmm 2.2. The vfunc interface has not yet stabilized
175 * enough to allow that -- the C++ wrapper went in by pure accident. Besides,
176 * it isn't terribly useful either. Thus please refrain from overriding any
179 class IOChannel : public sigc::trackable
182 #ifndef DOXYGEN_SHOULD_SKIP_THIS
183 typedef IOChannel CppObjectType;
184 typedef GIOChannel BaseObjectType;
185 #endif /* DOXYGEN_SHOULD_SKIP_THIS */
191 virtual ~IOChannel();
193 /** Open a file @a filename as an I/O channel using mode @a mode.
194 * This channel will be closed when the last reference to it is dropped,
195 * so there is no need to call close() (though doing so will not cause
196 * problems, as long as no attempt is made to access the channel after
198 * @param filename The name of the file to open.
199 * @param mode One of <tt>"r"</tt>, <tt>"w"</tt>, <tt>"a"</tt>,
200 * <tt>"r+"</tt>, <tt>"w+"</tt>, <tt>"a+"</tt>. These have the
201 * same meaning as in <tt>fopen()</tt>.
202 * @return An IOChannel for the opened file.
203 * @throw Glib::FileError
205 static Glib::RefPtr<IOChannel> create_from_file(const std::string& filename, const std::string& mode);
208 /** Creates an I/O channel from a file descriptor.
209 * On Unix, IOChannels created with this function work for any file
210 * descriptor or socket.
212 * On Win32, this can be used either for files opened with the MSVCRT (the
213 * Microsoft run-time C library) <tt>_open()</tt> or <tt>_pipe()</tt>,
214 * including file descriptors 0, 1 and 2 (corresponding to <tt>stdin</tt>,
215 * <tt>stdout</tt> and <tt>stderr</tt>), or for Winsock <tt>SOCKET</tt>s. If
216 * the parameter is a legal file descriptor, it is assumed to be such,
217 * otherwise it should be a <tt>SOCKET</tt>. This relies on <tt>SOCKET</tt>s
218 * and file descriptors not overlapping. If you want to be certain, call
219 * either create_from_win32_fd() or create_from_win32_socket() instead as
222 * The term file descriptor as used in the context of Win32 refers to the
223 * emulated Unix-like file descriptors MSVCRT provides. The native
224 * corresponding concept is file <tt>HANDLE</tt>. There isn't as of yet
225 * a way to get IOChannels for Win32 file <tt>HANDLE</tt>s.
227 static Glib::RefPtr<IOChannel> create_from_fd(int fd);
230 /* defined(DOXYGEN_SHOULD_SKIP_THIS) actually does the opposite of what it looks like... */
231 #if defined(G_OS_WIN32) || defined(DOXYGEN_SHOULD_SKIP_THIS)
233 /** Create an I/O channel for C runtime (emulated Unix-like) file descriptors.
234 * After calling add_watch() on a I/O channel returned by this function, you
235 * shouldn't call read() on the file descriptor. This is because adding
236 * polling for a file descriptor is implemented on Win32 by starting a thread
237 * that sits blocked in a <tt>%read()</tt> from the file descriptor most of
238 * the time. All reads from the file descriptor should be done by this
239 * internal GLib thread. Your code should call only IOChannel::read().
241 static Glib::RefPtr<IOChannel> create_from_win32_fd(int fd);
244 /** Create an I/O channel for a winsock socket. The parameter should be a
245 * <tt>SOCKET</tt>. Contrary to I/O channels for file descriptors (on Win32),
246 * you can use normal <tt>recv()</tt> or <tt>recvfrom()</tt> on sockets even
247 * if GLib is polling them.
249 static Glib::RefPtr<IOChannel> create_from_win32_socket(int socket);
252 #endif /* defined(G_OS_WIN32) || defined(DOXYGEN_SHOULD_SKIP_THIS) */
254 /** Read a single UCS-4 character.
255 * @retval unichar The Unicode character.
256 * @return The status of the operation.
257 * @throw Glib::IOChannelError
258 * @throw Glib::ConvertError
261 /** This function cannot be called on a channel with <tt>0</tt> encoding.
262 * @param thechar A location to return a character.
263 * @param error A location to return an error of type G::ConvertError
264 * or G::IOChannelError.
265 * @return A G::IOStatus.
267 IOStatus read(gunichar& unichar);
269 /** Read a character sequence into memory.
270 * @param buf A buffer to read data into.
271 * @param count The size of the buffer in bytes. Note that the buffer may
272 * not be complelely filled even if there is data in the buffer if the
273 * remaining data is not a complete character.
274 * @retval bytes_read The number of bytes read. This may be zero even on
275 * success if @a count < 6 and the channel's encoding is not <tt>""</tt>.
276 * This indicates that the next UTF-8 character is too wide for the buffer.
277 * @return The status of the operation.
278 * @throw Glib::IOChannelError
279 * @throw Glib::ConvertError
282 /** Replacement for g_io_channel_read() with the new API.
283 * @param buf A buffer to read data into.
284 * @param count The size of the buffer. Note that the buffer may
285 * not be complelely filled even if there is data
286 * in the buffer if the remaining data is not a
287 * complete character.
288 * @param bytes_read The number of bytes read. This may be zero even on
289 * success if count < 6 and the channel's encoding is non-<tt>0</tt>.
290 * This indicates that the next UTF-8 character is too wide for
292 * @param error A location to return an error of type G::ConvertError
293 * or G::IOChannelError.
294 * @return The status of the operation.
296 IOStatus read(char* buf, gsize count, gsize& bytes_read);
298 /** Read a maximum of @a count bytes into @a str.
299 * @param count The maximum number of bytes to read.
300 * @retval str The characters that have been read.
301 * @return The status of the operation.
302 * @throw Glib::IOChannelError
303 * @throw Glib::ConvertError
305 IOStatus read(Glib::ustring& str, gsize count);
307 /** Read a whole line.
308 * Reads until the line separator is found, which is included
309 * in the result string.
310 * @retval line The line that was read.
311 * @return The status of the operation.
312 * @throw Glib::IOChannelError
313 * @throw Glib::ConvertError
315 IOStatus read_line(Glib::ustring& line);
318 /** Reads all the remaining data from the file.
319 * @retval str The resulting string.
320 * @return Glib::IO_STATUS_NORMAL on success. This function never
321 * returns Glib::IO_STATUS_EOF.
322 * @throw Glib::IOChannelError
323 * @throw Glib::ConvertError
325 IOStatus read_to_end(Glib::ustring& str);
328 /** Write a string to the I/O channel.
329 * Note that this method does not return the number of characters written.
330 * If the channel is blocking and the returned value is
331 * Glib::IO_STATUS_NORMAL, the whole string was written.
332 * @param str the string to write.
333 * @return The status of the operation.
334 * @throw Glib::IOChannelError
335 * @throw Glib::ConvertError
337 IOStatus write(const Glib::ustring& str);
339 /** Write a memory area of @a count bytes to the I/O channel.
340 * @param buf The start of the memory area.
341 * @param count The number of bytes to write.
342 * @retval bytes_written The number of bytes written to the channel.
343 * @return The status of the operation.
344 * @throw Glib::IOChannelError
345 * @throw Glib::ConvertError
348 /** Replacement for g_io_channel_write() with the new API.
350 * On seekable channels with encodings other than <tt>0</tt> or UTF-8, generic
351 * mixing of reading and writing is not allowed. A call to g_io_channel_write_chars()
352 * may only be made on a channel from which data has been read in the
353 * cases described in the documentation for g_io_channel_set_encoding().
354 * @param buf A buffer to write data from.
355 * @param count The size of the buffer. If -1, the buffer
356 * is taken to be a nul-terminated string.
357 * @param bytes_written The number of bytes written. This can be nonzero
358 * even if the return value is not G::IO_STATUS_NORMAL.
359 * If the return value is G::IO_STATUS_NORMAL and the
360 * channel is blocking, this will always be equal
361 * to @a count if @a count >= 0.
362 * @param error A location to return an error of type G::ConvertError
363 * or G::IOChannelError.
364 * @return The status of the operation.
366 IOStatus write(const char* buf, gssize count, gsize& bytes_written);
368 /** Write a single UCS-4 character to the I/O channel.
369 * @param unichar The character to write.
370 * @return The status of the operation.
371 * @throw Glib::IOChannelError
372 * @throw Glib::ConvertError
375 /** This function cannot be called on a channel with <tt>0</tt> encoding.
376 * @param thechar A character.
377 * @param error A location to return an error of type G::ConvertError
378 * or G::IOChannelError.
379 * @return A G::IOStatus.
381 IOStatus write(gunichar unichar);
383 /** Seek the I/O channel to a specific position.
384 * @param offset The offset in bytes from the position specified by @a type.
385 * @param type A SeekType. The type Glib::SEEK_TYPE_CUR is only allowed in
386 * those cases where a call to set_encoding() is allowed. See the
387 * documentation for set_encoding() for details.
388 * @return The status of the operation.
389 * @throw Glib::IOChannelError
390 * @throw Glib::ConvertError
393 /** Replacement for g_io_channel_seek() with the new API.
394 * @param offset The offset in bytes from the position specified by @a type .
395 * @param type A G::SeekType. The type G::SEEK_CUR is only allowed in those
396 * cases where a call to g_io_channel_set_encoding()
397 * is allowed. See the documentation for
398 * g_io_channel_set_encoding() for details.
399 * @param error A location to return an error of type G::IOChannelError.
400 * @return The status of the operation.
402 IOStatus seek(gint64 offset, SeekType type = SEEK_TYPE_SET);
404 /** Flush the buffers of the I/O channel.
405 * @return The status of the operation.
406 * @throw Glib::IOChannelError
407 * @throw Glib::ConvertError
410 /** Flushes the write buffer for the GIOChannel.
411 * @param error Location to store an error of type G::IOChannelError.
412 * @return The status of the operation: One of
413 * G::IO_CHANNEL_NORMAL, G::IO_CHANNEL_AGAIN, or
414 * G::IO_CHANNEL_ERROR.
418 /** Close the I/O channel.
419 * Any pending data to be written will be flushed if @a flush is <tt>true</tt>.
420 * The channel will not be freed until the last reference is dropped.
421 * Accessing the channel after closing it is considered an error.
422 * @param flush Whether to flush() pending data before closing the channel.
423 * @return The status of the operation.
424 * @throw Glib::IOChannelError
427 /** Close an IO channel. Any pending data to be written will be
428 * flushed if @a flush is <tt>true</tt>. The channel will not be freed until the
429 * last reference is dropped using g_io_channel_unref().
430 * @param flush If <tt>true</tt>, flush pending.
431 * @param err Location to store a G::IOChannelError.
432 * @return The status of the operation.
434 IOStatus close(bool flush = true);
436 /** Get the IOChannel internal buffer size.
437 * @return The buffer size.
440 /** Gets the buffer size.
441 * @return The size of the buffer.
443 gsize get_buffer_size() const;
445 /** Set the internal IOChannel buffer size.
446 * @param size The buffer size the IOChannel should use.
449 /** Sets the buffer size.
450 * @param size The size of the buffer. 0 == pick a good size.
452 void set_buffer_size(gsize size);
454 /** Get the current flags for a IOChannel, including read-only
455 * flags such as Glib::IO_FLAG_IS_READABLE.
457 * The values of the flags Glib::IO_FLAG_IS_READABLE and
458 * Glib::IO_FLAG_IS_WRITEABLE are cached for internal use by the channel when
459 * it is created. If they should change at some later point (e.g. partial
460 * shutdown of a socket with the UNIX <tt>shutdown()</tt> function), the user
461 * should immediately call get_flags() to update the internal values of these
463 * @return Bitwise combination of the flags set on the channel.
466 /** Gets the current flags for a G::IOChannel, including read-only
467 * flags such as G::IO_FLAG_IS_READABLE.
469 * The values of the flags G::IO_FLAG_IS_READABLE and G::IO_FLAG_IS_WRITEABLE
470 * are cached for internal use by the channel when it is created.
471 * If they should change at some later point (e.g. partial shutdown
472 * of a socket with the UNIX shutdown() function), the user
473 * should immediately call g_io_channel_get_flags() to update
474 * the internal values of these flags.
475 * @return The flags which are set on the channel.
477 IOFlags get_flags() const;
479 /** Set flags on the IOChannel.
480 * @param flags Bitwise combination of the flags to set.
481 * @return The operation result code.
482 * @throw Glib::IOChannelError
485 /** Sets the (writeable) flags in @a channel to ( @a flags & G::IO_CHANNEL_SET_MASK).
486 * @param flags The flags to set on the IO channel.
487 * @param error A location to return an error of type G::IOChannelError.
488 * @return The status of the operation.
490 IOStatus set_flags(IOFlags flags);
492 /** Set the buffering status of the I/O channel.
493 * The buffering state can only be set if the channel's encoding is
494 * <tt>""</tt>. For any other encoding, the channel must be buffered.
496 * A buffered channel can only be set unbuffered if the channel's internal
497 * buffers have been flushed. Newly created channels or channels which have
498 * returned Glib::IO_STATUS_EOF not require such a flush. For write-only
499 * channels, a call to flush() is sufficient. For all other channels, the
500 * buffers may be flushed by a call to seek(). This includes the possibility
501 * of seeking with seek type Glib::SEEK_TYPE_CUR and an offset of zero. Note
502 * that this means that socket-based channels cannot be set unbuffered once
503 * they have had data read from them.
505 * The default state of the channel is buffered.
507 * @param buffered Whether to set the channel buffered or unbuffered.
510 /** The buffering state can only be set if the channel's encoding
511 * is <tt>0</tt>. For any other encoding, the channel must be buffered.
513 * A buffered channel can only be set unbuffered if the channel's
514 * internal buffers have been flushed. Newly created channels or
515 * channels which have returned G::IO_STATUS_EOF
516 * not require such a flush. For write-only channels, a call to
517 * g_io_channel_flush() is sufficient. For all other channels,
518 * the buffers may be flushed by a call to g_io_channel_seek_position().
519 * This includes the possibility of seeking with seek type G::SEEK_CUR
520 * and an offset of zero. Note that this means that socket-based
521 * channels cannot be set unbuffered once they have had data
524 * On unbuffered channels, it is safe to mix read and write
525 * calls from the new and old APIs, if this is necessary for
526 * maintaining old code.
528 * The default state of the channel is buffered.
529 * @param buffered Whether to set the channel buffered or unbuffered.
531 void set_buffered(bool buffered);
533 /** Get the buffering status of the I/O channel.
534 * @return The buffering status of the channel.
537 /** Returns whether @a channel is buffered.
538 * @return <tt>true</tt> if the @a channel is buffered.
540 bool get_buffered() const;
542 /** Returns an IOCondition depending on whether there is data to be
543 * read/space to write data in the internal buffers in the I/O channel.
544 * Only the flags Glib::IO_IN and Glib::IO_OUT may be set.
545 * @return Bitwise combination of Glib::IOCondition flags.
548 /** This function returns a G::IOCondition depending on whether there
549 * is data to be read/space to write data in the
550 * internal buffers in the G::IOChannel. Only the flags G::IO_IN and
551 * G::IO_OUT may be set.
552 * @return A G::IOCondition.
554 IOCondition get_buffer_condition() const;
556 /** Returns whether the file/socket/whatever associated with the I/O channel
557 * will be closed when the channel receives its final unref and is destroyed.
558 * The default value of this is <tt>true</tt> for channels created by
559 * create_from_file(), and <tt>false</tt> for all other channels.
560 * @return Whether the channel will be closed on the final unref of the
564 /** Returns whether the file/socket/whatever associated with @a channel
565 * will be closed when @a channel receives its final unref and is
566 * destroyed. The default value of this is <tt>true</tt> for channels created
567 * by g_io_channel_new_file(), and <tt>false</tt> for all other channels.
568 * @return Whether the channel will be closed on the final unref of
569 * the GIOChannel data structure.
571 bool get_close_on_unref() const;
573 /** Setting this flag to <tt>true</tt> for a channel you have already closed
574 * can cause problems.
575 * @param do_close Whether to close the channel on the final unref of the
576 * IOChannel object. The default value of this is <tt>true</tt> for channels
577 * created by create_from_file(), and <tt>false</tt> for all other channels.
580 /** Setting this flag to <tt>true</tt> for a channel you have already closed
581 * can cause problems.
582 * @param do_close Whether to close the channel on the final unref of
583 * the GIOChannel data structure. The default value of
584 * this is <tt>true</tt> for channels created by g_io_channel_new_file(),
585 * and <tt>false</tt> for all other channels.
587 void set_close_on_unref(bool do_close);
589 /** Sets the encoding for the input/output of the channel.
590 * The internal encoding is always UTF-8. The default encoding for the
591 * external file is UTF-8. The encoding <tt>""</tt> is safe to use with
594 * The encoding can only be set if one of the following conditions
597 * -# The channel was just created, and has not been written to or read from
599 * -# The channel is write-only.
600 * -# The channel is a file, and the file pointer was just repositioned by a
601 * call to seek_position(). (This flushes all the internal buffers.)
602 * -# The current encoding is <tt>""</tt> or UTF-8.
603 * -# One of the read methods has just returned Glib::IO_STATUS_EOF (or, in
604 * the case of read_to_end(), Glib::IO_STATUS_NORMAL).
605 * -# The read() method has returned Glib::IO_STATUS_AGAIN or thrown
606 * a Glib::Error exception. This may be useful in the case of
607 * ConvertError::ILLEGAL_SEQUENCE. Returning one of these statuses
608 * from read_line() or read_to_end() does <em>not</em> guarantee that
609 * the encoding can be changed.
611 * Channels which do not meet one of the above conditions cannot call
612 * seek_position() with a seek type of Glib::SEEK_TYPE_CUR and, if they
613 * are "seekable", cannot call write() after calling one of the API
616 * @param encoding The encoding name, or <tt>""</tt> for binary.
617 * @return Glib::IO_STATUS_NORMAL if the encoding was successfully set.
618 * @throw Glib::IOChannelError
620 IOStatus set_encoding(const std::string& encoding = std::string());
623 /** Get the encoding of the I/O channel.
624 * @return The current encoding of the channel.
626 std::string get_encoding() const;
629 void set_line_term(const std::string& term = std::string());
632 std::string get_line_term() const;
635 /** Creates an IOSource object.
636 * Create a slot from a function to be called when condition is met
637 * for the channel with sigc::ptr_fun() or sigc::mem_fun() and pass
638 * it into the connect() function of the returned IOSource object.
639 * Polling of the channel will start when you attach a MainContext
640 * object to the returned IOSource object using its attach() function.
642 * Glib::signal_io().connect() is a simpler interface to the same
643 * functionality, for the case where you want to add the source to the
644 * default main context.
645 * @param condition The condition to watch for.
646 * @return An IOSource object that can be polled from a MainContext's event loop.
648 Glib::RefPtr<IOSource> create_watch(IOCondition condition);
651 virtual void reference() const;
652 virtual void unreference() const;
655 GIOChannel* gobj() { return gobject_; }
656 const GIOChannel* gobj() const { return gobject_; }
659 GIOChannel* gobject_;
661 /** Constructor that should be used by derived classes.
662 * Use this constructor if you want to inherit from IOChannel.
663 * It will set up a GIOChannel that will call the vfuncs of your
664 * class even if it is being used from C code, and it will keep
665 * a reference to the C++ code while the GIOChannel exists.
670 #ifndef DOXYGEN_SHOULD_SKIP_THIS
671 IOChannel(GIOChannel* gobject, bool take_copy);
674 virtual IOStatus read_vfunc(char* buf, gsize count, gsize& bytes_read);
675 virtual IOStatus write_vfunc(const char* buf, gsize count, gsize& bytes_written);
676 virtual IOStatus seek_vfunc(gint64 offset, SeekType type);
677 virtual IOStatus close_vfunc();
678 virtual IOStatus set_flags_vfunc(IOFlags flags);
679 virtual IOFlags get_flags_vfunc();
680 virtual Glib::RefPtr<Glib::Source> create_watch_vfunc(IOCondition cond);
682 #ifndef DOXYGEN_SHOULD_SKIP_THIS
683 friend class Glib::GlibmmIOChannel;
689 Glib::RefPtr<IOChannel> wrap(GIOChannel* gobject, bool take_copy = false);
694 #endif /* _GLIBMM_IOCHANNEL_H */