The handle and handle classes are different!

The definition of the handle class on the C ++ primer is unclear. Baidu gave a "handle" and found that this was a mess. After a long time of struggle, I was also excited by my predecessors.

Later, we found that the handle and the handle class are two concepts. The handle is a Windows system string used to uniquely identify the resource, and the handle class is a language-level thing.

From Baidu

The handle class actually points toPointerTo replace the actual copying object.PointerTo improve memory efficiency and access speed. It is particularly useful when it comes to replication control of large and complex objects and objects that cannot be copied or are not easy to copy.

The handle class is not a pointer, but it can contain pointers. It is used to conveniently operate on objects. You can analyze and release resources by yourself.