EDataBook.BookCache.search_with_callback

### Method

# EDataBook BookCachesearch_with_callback

since: 3.26

#### Declaration [src]

    gboolean
    e_book_cache_search_with_callback (
      EBookCache* book_cache,
      const gchar* sexp,
      EBookCacheSearchFunc func,
      gpointer user_data,
      GCancellable* cancellable,
      GError** error
    )

#### Description [src]

Similar to e_book_cache_search(), but calls the `func` for each found contact.

Available since: 3.26

#### Parameters

`sexp`

  Type: `const gchar*`

  Search expression; use `NULL` or an empty string to get all stored contacts.

  The argument can be `NULL`.
  The data is owned by the caller of the method.
  The value is a NUL terminated UTF-8 string.

`func`

  Type: `EBookCacheSearchFunc`

  An `EBookCacheSearchFunc` callback to call for each found row.

`user_data`

  Type: `gpointer`

  User data for `func`.

  The argument can be `NULL`.
  The data is owned by the caller of the method.

`cancellable`

  Type: `GCancellable`

  Optional `GCancellable` object, or `NULL`.

  The argument can be `NULL`.
  The data is owned by the caller of the method.

`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 method 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.

#### Return value

Type: `gboolean`

`TRUE` on success, otherwise `FALSE` is returned and `error` is set appropriately.