### Struct

# GLib IOFuncs

#### Description [src]

    struct GIOFuncs {
      GIOStatus (* io_read) (
        GIOChannel* channel,
        gchar* buf,
        gsize count,
        gsize* bytes_read,
        GError** error
      );;
      GIOStatus (* io_write) (
        GIOChannel* channel,
        const gchar* buf,
        gsize count,
        gsize* bytes_written,
        GError** error
      );;
      GIOStatus (* io_seek) (
        GIOChannel* channel,
        gint64 offset,
        GSeekType type,
        GError** error
      );;
      GIOStatus (* io_close) (
        GIOChannel* channel,
        GError** error
      );;
      GSource* (* io_create_watch) (
        GIOChannel* channel,
        GIOCondition condition
      );;
      void (* io_free) (
        GIOChannel* channel
      );;
      GIOStatus (* io_set_flags) (
        GIOChannel* channel,
        GIOFlags flags,
        GError** error
      );;
      GIOFlags (* io_get_flags) (
        GIOChannel* channel
      );;
    }

A table of functions used to handle different types of `GIOChannel` in a generic way.

###### Structure members

`io_read:` `GIOStatus (* io_read) ( GIOChannel* channel, gchar* buf, gsize count, gsize* bytes_read, GError** error )`

  Reads raw bytes from the channel. This is called from various functions such as `g_io_channel_read_chars()` to read raw bytes from the channel. Encoding and buffering issues are dealt with at a higher level.

`io_write:` `GIOStatus (* io_write) ( GIOChannel* channel, const gchar* buf, gsize count, gsize* bytes_written, GError** error )`

  Writes raw bytes to the channel. This is called from various functions such as `g_io_channel_write_chars()` to write raw bytes to the channel. Encoding and buffering issues are dealt with at a higher level.

`io_seek:` `GIOStatus (* io_seek) ( GIOChannel* channel, gint64 offset, GSeekType type, GError** error )`

  Seeks the channel. This is called from `g_io_channel_seek()` on channels that support it.

`io_close:` `GIOStatus (* io_close) ( GIOChannel* channel, GError** error )`

  Closes the channel. This is called from `g_io_channel_close()` after flushing the buffers.

`io_create_watch:` `GSource* (* io_create_watch) ( GIOChannel* channel, GIOCondition condition )`

  Creates a watch on the channel. This call corresponds directly to g_io_create_watch().

`io_free:` `void (* io_free) ( GIOChannel* channel )`

  Called from `g_io_channel_unref()` when the channel needs to be freed. This function must free the memory associated with the channel, including freeing the `GIOChannel` structure itself. The channel buffers have been flushed and possibly `io_close` has been called by the time this function is called.

`io_set_flags:` `GIOStatus (* io_set_flags) ( GIOChannel* channel, GIOFlags flags, GError** error )`

  Sets the `GIOFlags` on the channel. This is called from `g_io_channel_set_flags()` with all flags except for `G_IO_FLAG_APPEND` and `G_IO_FLAG_NONBLOCK` masked out.

`io_get_flags:` `GIOFlags (* io_get_flags) ( GIOChannel* channel )`

  Gets the `GIOFlags` for the channel. This function need only return the `G_IO_FLAG_APPEND` and `G_IO_FLAG_NONBLOCK` flags; `g_io_channel_get_flags()` automatically adds the others as appropriate.