Many Windows functions have been named with a verb-noun model to help you remember and become familiar with the function. The function name indicates both what the function does (verb) and the target of its action (noun).
All function names begin with an uppercase letter. If the name is composed of several words, each word begins with an uppercase letter and all words are adjoined (no spaces or underscore characters separate the words). Some examples of function names are shown below:
CreateWindow
RegisterClass
SetMapMode