## gnome-vfs-module-callback-module-api gnome-vfs-module-callback-module-api — invoking callbacks from a gnome-vfs module to ask the application for necessary information (authentication, ...) |

## Synopsis

    gboolean            gnome_vfs_module_callback_invoke    (const char *callback_name,
                                                             gconstpointer in,
                                                             gsize in_size,
                                                             gpointer out,
                                                             gsize out_size);

## Description

## Details

### gnome_vfs_module_callback_invoke ()

    gboolean            gnome_vfs_module_callback_invoke    (const char *callback_name,
                                                             gconstpointer in,
                                                             gsize in_size,
                                                             gpointer out,
                                                             gsize out_size);

Invoke a default callback for `callback_name`, with in arguments specified by `in` and `in_size`, and out arguments specified by `out` and `out_size`.

This function should only be called by gnome-vfs modules.

If this function is called from an async job thread, it will invoke the current async handler for `callback_name`, if any. If no async handler is set, or the function is not called from an async job thread, the regular handler, if any, will be invoked instead. If no handler at all is found for `callback_name`, the function returns `FALSE`.

`callback_name` : | name of the module callback to set.
`in` : | in argument for this callback; the exact type depends on the specific callback.
`in_size` : | size of the in argument; useful for sanity-checking.
`out` : | out argument for this callback; the exact type depends on the specific callback.
`out_size` : | size of the out argument; useful for sanity-checking.
Returns : | `TRUE` if a callback was invoked, `FALSE` if none was set.