Checks if @task's #GCancellable has been cancelled, and if so, sets
@task's error accordingly and completes the task (see
g_task_return_pointer() for more discussion of exactly what this
means).
Return: %TRUE if @task has been cancelled, %FALSE if not
Checks if @task's #GCancellable has been cancelled, and if so, sets @task's error accordingly and completes the task (see g_task_return_pointer() for more discussion of exactly what this means).
Return: %TRUE if @task has been cancelled, %FALSE if not