choose

Description:

public async int choose (Window? parent, Cancellable? cancellable) throws Error

This function shows the alert to the user.

The callback will be called when the alert is dismissed. It should call [method@Gtk.AlertDialog.choose_finish] to obtain the result.

It is ok to pass `NULL` for the callback if the alert does not have more than one button. A simpler API for this case is [ method@Gtk.AlertDialog.show].

Parameters:

this	a `GtkAlertDialog`
parent	the parent `GtkWindow`
cancellable	a `GCancellable` to cancel the operation
callback	a callback to call when the operation is complete
user_data	data to pass to `callback`