[C++] MS에서 사용하는 헝가리안 표기법

Hungarian Notation 

Win32 follows a notation convention called Hungarian Notation. In Hungarian Notation the 

first character or first several characters of a variable or parameter name identifies that 

variable or parameters type. Here are some of the most common Hungarian Notation 

prefixes: 

b or f—used as a prefix for booleans (f stands for flag). 

c—used as a prefix to chars.1

n—used as a prefix to shorts. 

h—used as a prefix for a handle. Handles in Win32 are numbers used to identify resources or 

windows. They are not pointers or pointers to pointers. Think of them as ID numbers. 

l—used as a prefix to a long. 

w—used as a prefix to a word. 

dw—used as a prefix to a double word. 

s—used as a prefix to a string. 

sz—used as a prefix to a null-terminated string.2

p—used as a prefix to a pointer. 

lp—used as a prefix to a long pointer (this is the same as a pointer in Win32 and is a relic 

from Win16). 

fn—used as a prefix to function parameters. 

 

Win32 Data Types 

Win32 includes its own set of data types. These data types are usually written with all capital 

letters and are typically #defined or typedef’ed somewhere in the Windows header files. 

They often follow similar conventions to Hungarian Notation. An H before a data type name, 

for example represents a handle while an LP represents a long pointer. 

Most of them are pretty obvious WORD, for example is obviously a word (which is a 16-bit 

unsigned integer in Win32). Here are a few of the more common types you should be 

familiar with: 

LPSTR—long pointer to a string (equivalent to a pointer to a string for Win32). 

LPCSTR—long pointer to a constant string. 

BOOL—a Windows’ Boolean. Note that this is not quite the same as a C++ bool, use the 

constants TRUE and FALSE with Windows’ BOOLs and true and false with C++ 

bools. 

UINT—unsigned integer. 

Win32 Constants 

An identifier with all uppercase characters may also represent a constant integer value. In 

this case, the first two characters are followed by an underscore and the first two characters 

identify the type of constant. For example WM_COMMAND constant integer which 

identifies a particular windows message. ES_RIGHT is a constant integer which can be used 

to request a particular style of edit window (one in which the text is right aligned). 

LVS_REPORT is a constant integer which is used to request a list control with list view style 

including multi-column report display format. 

MFC Naming 

MFC has its own set of naming conventions: 

m_—all member variables are preceded with an m_. 

On—all message handlers function should be preceded with On (e.g., OnSize). Note 

however, that not all functions that begin with On are true Win32 message handlers. For 

example OnInitialUpdate is not a Win32 message handler, and there is no corresponding 

WM_INITIALUPDATE Windows message.

출처 : http://web.stanford.edu/

h04-naming.pdf