This class describes an exception thrown by the PPL tasks layer in order to force the current task to cancel. It is also thrown by the get() method on task, for a canceled task. 
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#include <pplxcancellation_token.h>
This class describes an exception thrown by the PPL tasks layer in order to force the current task to cancel. It is also thrown by the get() method on task, for a canceled task. 
Constructs a task_canceled  object. 
Constructs a task_canceled  object.