Function

EDataBookBookBackendCustomOpFunc

since: 3.26

Declaration

void
(* EBookBackendCustomOpFunc) (
  EBookBackend* book_backend,
  gpointer user_data,
  GCancellable* cancellable,
  GError** error
)

Description [src]

A callback prototype being called in a dedicated thread, scheduled by e_book_backend_schedule_custom_operation().

Available since: 3.26

Parameters

book_backend

Type: EBookBackend

An EBookBackend.

The data is owned by the caller of the function.
user_data

Type: gpointer

A function user data, as provided to e_book_backend_schedule_custom_operation().

The argument can be NULL.
The data is owned by the caller of the function.
cancellable

Type: GCancellable

An optional GCancellable, as provided to e_book_backend_schedule_custom_operation().

The argument can be NULL.
The data is owned by the caller of the function.
error

Type: GError **

The return location for a recoverable error.

The argument can be NULL.
If the return location is not NULL, then you must initialize it to a NULL GError*.
The argument will be left initialized to NULL by the function if there are no errors.
In case of error, the argument will be set to a newly allocated GError; the caller will take ownership of the data, and be responsible for freeing it.