## GMimeObject GMimeObject — Abstract MIME objects |

## Synopsis

                        GMimeObject;
    void                (*GMimePartFunc)                    (GMimeObject *part,
                                                             gpointer user_data);
    void                g_mime_object_register_type         (const char *type,
                                                             const char *subtype,
                                                             GType object_type);
    GMimeObject*        g_mime_object_new_type              (const char *type,
                                                             const char *subtype);
    void                g_mime_object_ref                   (GMimeObject *object);
    void                g_mime_object_unref                 (GMimeObject *object);
    void                g_mime_object_set_content_type      (GMimeObject *object,
                                                             GMimeContentType *mime_type);
    const GMimeContentType* g_mime_object_get_content_type  (GMimeObject *object);
    void                g_mime_object_set_content_type_parameter
                                                            (GMimeObject *object,
                                                             const char *name,
                                                             const char *value);
    const char*         g_mime_object_get_content_type_parameter
                                                            (GMimeObject *object,
                                                             const char *name);
    void                g_mime_object_set_content_id        (GMimeObject *object,
                                                             const char *content_id);
    const char*         g_mime_object_get_content_id        (GMimeObject *object);
    void                g_mime_object_add_header            (GMimeObject *object,
                                                             const char *header,
                                                             const char *value);
    void                g_mime_object_set_header            (GMimeObject *object,
                                                             const char *header,
                                                             const char *value);
    const char*         g_mime_object_get_header            (GMimeObject *object,
                                                             const char *header);
    void                g_mime_object_remove_header         (GMimeObject *object,
                                                             const char *header);
    char*               g_mime_object_get_headers           (GMimeObject *object);
    ssize_t             g_mime_object_write_to_stream       (GMimeObject *object,
                                                             GMimeStream *stream);
    char*               g_mime_object_to_string             (GMimeObject *object);

## Object Hierarchy

      GObject
       +----GMimeObject
             +----GMimePart
             +----GMimeMultipart
             +----GMimeMessagePart
             +----GMimeMessage

## Description

GMimeObject is an abstract class from which all Message and MIME parts are derived.

## Details

### GMimeObject

    typedef struct _GMimeObject GMimeObject;

### GMimePartFunc ()

    void                (*GMimePartFunc)                    (GMimeObject *part,
                                                             gpointer user_data);

The function signature for a callback to `g_mime_message_foreach_part()` and `g_mime_multipart_foreach()`.

`part` : | A MIME part.
`user_data` : | User-supplied callback data.

### g_mime_object_register_type ()

    void                g_mime_object_register_type         (const char *type,
                                                             const char *subtype,
                                                             GType object_type);

Registers the object type `object_type` for use with the `g_mime_object_new_type()` convenience function.

Note: You may use the wildcard "*" to match any type and/or subtype.

`type` : | mime type
`subtype` : | mime subtype
`object_type` : | object type

### g_mime_object_new_type ()

    GMimeObject*        g_mime_object_new_type              (const char *type,
                                                             const char *subtype);

Performs a lookup of registered GMimeObject subclasses, registered using `g_mime_object_register_type()`, to find an appropriate class capable of handling MIME parts of type `type`/`subtype`. If no class has been registered to handle that type, it looks for a registered class that can handle `type`. If that also fails, then it will use the generic part class, GMimePart.

`type` : | mime type
`subtype` : | mime subtype
Returns : | an appropriate GMimeObject registered to handle mime-types of `type`/`subtype`.

### g_mime_object_ref ()

    void                g_mime_object_ref                   (GMimeObject *object);

### Warning

`g_mime_object_ref` is deprecated and should not be used in newly-written code.

Ref's a MIME object.

WARNING: This method is deprecated. Use `g_object_ref()` instead.

`object` : | mime object

### g_mime_object_unref ()

    void                g_mime_object_unref                 (GMimeObject *object);

### Warning

`g_mime_object_unref` is deprecated and should not be used in newly-written code.

Unref's a MIME object.

WARNING: This method is deprecated. Use `g_object_unref()` instead.

`object` : | mime object

### g_mime_object_set_content_type ()

    void                g_mime_object_set_content_type      (GMimeObject *object,
                                                             GMimeContentType *mime_type);

Sets the content-type for the specified MIME object.

`object` : | MIME object
`mime_type` : | MIME type

### g_mime_object_get_content_type ()

    const GMimeContentType* g_mime_object_get_content_type  (GMimeObject *object);

Gets the Content-Type object for the given MIME object or `NULL` on fail.

`object` : | MIME object
Returns : | the content-type object for the specified MIME object.

### g_mime_object_set_content_type_parameter ()

    void                g_mime_object_set_content_type_parameter
                                                            (GMimeObject *object,
                                                             const char *name,
                                                             const char *value);

Sets the content-type param `name` to the value `value`.

`object` : | MIME object
`name` : | param name
`value` : | param value

### g_mime_object_get_content_type_parameter ()

    const char*         g_mime_object_get_content_type_parameter
                                                            (GMimeObject *object,
                                                             const char *name);

Gets the value of the content-type param `name` set on the MIME part `object`.

`object` : | MIME object
`name` : | param name
Returns : | the value of the requested content-type param or `NULL` on if the param doesn't exist.

### g_mime_object_set_content_id ()

    void                g_mime_object_set_content_id        (GMimeObject *object,
                                                             const char *content_id);

Sets the Content-Id of the MIME object.

`object` : | MIME object
`content_id` : | content-id (addr-spec portion)

### g_mime_object_get_content_id ()

    const char*         g_mime_object_get_content_id        (GMimeObject *object);

Gets the Content-Id of the MIME object or NULL if one is not set.

`object` : | MIME object
Returns : | a const pointer to the Content-Id header.

### g_mime_object_add_header ()

    void                g_mime_object_add_header            (GMimeObject *object,
                                                             const char *header,
                                                             const char *value);

Adds an arbitrary header to the MIME object.

`object` : | mime object
`header` : | header name
`value` : | header value

### g_mime_object_set_header ()

    void                g_mime_object_set_header            (GMimeObject *object,
                                                             const char *header,
                                                             const char *value);

Sets an arbitrary header on the MIME object.

`object` : | mime object
`header` : | header name
`value` : | header value

### g_mime_object_get_header ()

    const char*         g_mime_object_get_header            (GMimeObject *object,
                                                             const char *header);

Gets the value of the requested header if it exists or `NULL` otherwise.

`object` : | mime object
`header` : | header name
Returns : | the value of the header `header` if it exists or `NULL` otherwise.

### g_mime_object_remove_header ()

    void                g_mime_object_remove_header         (GMimeObject *object,
                                                             const char *header);

Removed the specified header if it exists.

`object` : | mime object
`header` : | header name

### g_mime_object_get_headers ()

    char*               g_mime_object_get_headers           (GMimeObject *object);

Allocates a string buffer containing all of the MIME object's raw headers.

`object` : | mime object
Returns : | an allocated string containing all of the raw MIME headers.

### g_mime_object_write_to_stream ()

    ssize_t             g_mime_object_write_to_stream       (GMimeObject *object,
                                                             GMimeStream *stream);

Write the contents of the MIME object to `stream`.

`object` : | mime object
`stream` : | stream
Returns : | -1 on fail.

### g_mime_object_to_string ()

    char*               g_mime_object_to_string             (GMimeObject *object);

Allocates a string buffer containing the contents of `object`.

`object` : | mime object
Returns : | an allocated string containing the contents of the mime object.