backward_async

Description:

[ Version ( since = "3.10" ) ]
public async bool backward_async (TextIter iter, Cancellable? cancellable, out TextIter match_start, out TextIter match_end, out bool has_wrapped_around) throws Error

The asynchronous version of backward.

See the documentation of backward for more details.

See the AsyncResult documentation to know how to use this function.

If the operation is cancelled, the callback will only be called if cancellable was not null. backward_async takes ownership of cancellable, so you can unref it after calling this function.

Parameters:

this	a SourceSearchContext.
iter	start of search.
cancellable	a Cancellable, or null.
callback	a TaskReadyCallback to call when the operation is finished.
user_data	the data to pass to the `callback` function.