query_tasks_async

Description:

public async void query_tasks_async (TasksTasklist tasklist, Query? query, Cancellable? cancellable, owned QueryProgressCallback? progress_callback)

Queries the service to return a list of tasks in the given tasklist, which match query.

this, tasklist and query are all reffed when this function is called, so can safely be unreffed after this function returns.

Get the results of the query using query_async.end in the callback.

For more details, see query_tasks, which is the synchronous version of this function, and query_async, which is the base asynchronous query function.

this	a TasksService
tasklist	a TasksTasklist
query	a Query with the query parameters, or `null`
cancellable	optional Cancellable object, or `null`
progress_callback	a QueryProgressCallback to call when an entry is loaded, or `null`
callback	a TaskReadyCallback to call when the query is finished
destroy_progress_user_data	the function to call when `progress_callback` will not be called any more, or `null`. This function will be called with `progress_user_data` as a parameter and can be used to free any memory allocated for it.
progress_user_data	data to pass to the `progress_callback` function
user_data	data to pass to the `callback` function