## gimpplugin

gimpplugin — Functions useful for plugins, e.g. registration and progress indicators.

## Synopsis

    gboolean            gimp_plugin_domain_register         (const gchar *domain_name,
                                                             const gchar *domain_path);
    gboolean            gimp_plugin_help_register           (const gchar *domain_name,
                                                             const gchar *domain_uri);
    gboolean            gimp_plugin_icon_register           (const gchar *procedure_name,
                                                             GimpIconType icon_type,
                                                             const guint8 *icon_data);
    gboolean            gimp_plugin_menu_register           (const gchar *procedure_name,
                                                             const gchar *menu_path);
    gboolean            gimp_plugin_menu_branch_register    (const gchar *menu_path,
                                                             const gchar *menu_name);
    gboolean            gimp_plugin_set_pdb_error_handler   (GimpPDBErrorHandler handler);
    GimpPDBErrorHandler gimp_plugin_get_pdb_error_handler   (void);

## Description

Functions useful for plugins, e.g. registration and progress indicators.

## Details

### gimp_plugin_domain_register ()

    gboolean            gimp_plugin_domain_register         (const gchar *domain_name,
                                                             const gchar *domain_path);

Registers a textdomain for localisation.

This procedure adds a textdomain to the list of domains Gimp searches for strings when translating its menu entries. There is no need to call this function for plug-ins that have their strings included in the 'gimp-std-plugins' domain as that is used by default. If the compiled message catalog is not in the standard location, you may specify an absolute path to another location. This procedure can only be called in the query function of a plug-in and it has to be called before any procedure is installed.

`domain_name` : | The name of the textdomain (must be unique).
`domain_path` : | The absolute path to the compiled message catalog (may be NULL).
Returns : | TRUE on success.

### gimp_plugin_help_register ()

    gboolean            gimp_plugin_help_register           (const gchar *domain_name,
                                                             const gchar *domain_uri);

Register a help path for a plug-in.

This procedure registers user documentation for the calling plug-in with the GIMP help system. The domain_uri parameter points to the root directory where the plug-in help is installed. For each supported language there should be a file called 'gimp-help.xml' that maps the help IDs to the actual help files.

`domain_name` : | The XML namespace of the plug-in's help pages.
`domain_uri` : | The root URI of the plug-in's help pages.
Returns : | TRUE on success.

### gimp_plugin_icon_register ()

    gboolean            gimp_plugin_icon_register           (const gchar *procedure_name,
                                                             GimpIconType icon_type,
                                                             const guint8 *icon_data);

### gimp_plugin_menu_register ()

    gboolean            gimp_plugin_menu_register           (const gchar *procedure_name,
                                                             const gchar *menu_path);

Register an additional menu path for a plug-in procedure.

This procedure installs an additional menu entry for the given procedure.

`procedure_name` : | The procedure for which to install the menu path.
`menu_path` : | The procedure's additional menu path.
Returns : | TRUE on success.

Since GIMP 2.2

### gimp_plugin_menu_branch_register ()

    gboolean            gimp_plugin_menu_branch_register    (const gchar *menu_path,
                                                             const gchar *menu_name);

Register a sub-menu.

This procedure installs a sub-menu which does not belong to any procedure. The menu-name should be the untranslated menu label. GIMP will look up the translation in the textdomain registered for the plug-in.

`menu_path` : | The sub-menu's menu path.
`menu_name` : | The name of the sub-menu.
Returns : | TRUE on success.

Since GIMP 2.4

### gimp_plugin_set_pdb_error_handler ()

    gboolean            gimp_plugin_set_pdb_error_handler   (GimpPDBErrorHandler handler);

Sets an error handler for procedure calls.

This procedure changes the way that errors in procedure calls are handled. By default GIMP will raise an error dialog if a procedure call made by a plug-in fails. Using this procedure the plug-in can change this behavior. If the error handler is set to `GIMP_PDB_ERROR_HANDLER_PLUGIN`, then the plug-in is responsible for calling `gimp_get_pdb_error()` and handling the error whenever one if its procedure calls fails. It can do this by displaying the error message or by forwarding it in its own return values.

`handler` : | Who is responsible for handling procedure call errors.
Returns : | TRUE on success.

Since GIMP 2.6

### gimp_plugin_get_pdb_error_handler ()

    GimpPDBErrorHandler gimp_plugin_get_pdb_error_handler   (void);

Retrieves the active error handler for procedure calls.

This procedure retrieves the currently active error handler for procedure calls made by the calling plug-in. See `gimp_plugin_set_pdb_error_handler()` for details.

Returns : | Who is responsible for handling procedure call errors.

Since GIMP 2.6