What is the purpose of message?
There are three purposes for a message: inform, persuade or goodwill.
The first purpose is to inform where a message can be used to communicate routine, repetitive, daily tasks, instructions, codes, steps and procedures in the workplace..
What is message map in VC ++?
Message Maps is the Microsoft Foundation Class Library message map facility. … This message-map facility is designed to be similar to virtual functions but has additional benefits not possible with C++ virtual functions. Message Maps maps the user action into the appropriate MFC class functions to handle it.
What is message and its types?
There are three types of messages: Nominal, Expressive (sometimes called Emotional) and Predicative, (sometimes called Propositional).
How message map works in an MFC application?
MFC uses a technique called Message Maps. A Message Map is a table that associates messages with functions. When you receive a message, MFC will go through your Message Map and search for a corresponding Message Handler.
What is Afx_msg?
The afx_msg keyword suggests the effect of the C++ virtual keyword by distinguishing the handlers from other CWnd member functions. … To override a handler defined in a base class, simply define a function with the same prototype in your derived class and to make a message-map entry for the handler.
What is the example of message?
Message definitions. The definition of a message is a short communication sent from one person to another or the central theme or idea of a communication. An example of a message is what you leave for someone on an answering machine when you have tried to call him and he wasn’t there.
What are the four types of messages?
There are four main types of communication we use on a daily basis: Verbal, nonverbal, written and visual.