Recently I wrote a C ++ program about getlasterror.
Source: Internet
Author: User
Recently, the school curriculum design was written in the C ++ factory model. C ++ does not automatically throw an exception. Therefore, only one hresult (typedef long hresult) can be returned after many items are judged. If the hresult is 0, it is normal. Otherwise, an error code is returned.
This is just a common design, but it brings about huge problems. For example, many things, such as createnode (used to create a linked list), can be returned if a null error is returned. However, this error code cannot be taken out. At this time, we can actually design a public class for returning errors. Code. This is why some functions of Microsoft use hresult to return, and some must use getlasterror.
Since C ++ is rarely written, this course design has failed ...... Close-up ArticleI would like to encourage myself to study and study c ++ in depth this summer.
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