Creates a new asynchronous queue and sets up a destroy notify function that is used to free any remaining queue items when the queue is destroyed after the final unref. Since 2.16
function to free queue elements
ConstructionException GTK+ fails to create the object.
See Implementation
Creates a new asynchronous queue and sets up a destroy notify function that is used to free any remaining queue items when the queue is destroyed after the final unref. Since 2.16