callback system definition

We all know that objects are the encapsulation bodies of data and methods. In C ++, they are data members and member functions. The program designer changes the object state by executing various methods of the object (that is, changing the attribute

We all know that objects are the encapsulation bodies of data and methods. In C ++, they are data members and member functions. The program designer changes the object state by executing various methods of the object (that is, changing the attribute

Callback is used for inter-layer collaboration. The upper layer installs the function at the lower layer, which is the callback. The lower layer triggers the callback under certain conditions. For example, as a driver, it is an underlying layer,

One, callback function When looking at LWIP, see Using callback function, look at a foreigner company OPC source code, see Use callback function. Look at some of my domestic code (my company software, etc.) is useless. So, I have a lot of

Functions of the callback function 1. What is callback? There are always some interfaces between software modules. In terms of calling methods, they can be divided into three types: Synchronous call, callback and asynchronous call. Synchronous call

From: http://blog.163.com/william_djj@126/blog/static/351665012009324114710982/   1. What is callback? There are always some interfaces between software modules. In terms of calling methods, they can be divided into three types: Synchronous call,

This article is based on the protocol stack 1.3.2, please respect the originalGeneral Introduction :Osal provides a timer that can function with a callback function, which is implemented mainly in the OSAL_CTIMER.C and osal_cbtimer.h two files. The

Join me in learning WCF (9) -- Implementation of the WCF callback operation and the wcf callbackI. Introduction In the previous article, we introduced the Session support for WCF. In this article, we will detail the operations supported by WCF. In

A hook is actually a program segment for message processing. It is called by the system and mounted to the system. When a specific message is sent, the hook program first captures the message before it reaches the target form, that is, the hook

Android interface callback mechanism details, android callback When using the interface callback, I found a common error, that is, the implementation in the callback function may be done using multithreading or asynchronous tasks, this will cause us