Variable naming conventions

Since Windows programs are generally very long, programmers may forget the meaning of the defined variables after a while. To help you remember and differentiate variables, Microsoft has created a naming convention for Windows, called Hungarian notation ). Hungarian notation provides a set of prefix characters, as shown in Table 1.1. These prefixes can also be combined.

Table 1.1 Hungarian notation

Prefix	Meaning
A	Array
B	Boolean (INT)
By	Unsigned characters (bytes)
C	Character (byte)
CB	Byte Count
RGB	Long Integer that saves RGB color values
CX, Cy	Short INTEGER (calculate the length of X and Y)
DW	Unsigned long integer
FN	Function
H	Handle
I	Integer)
M _	Class data member
N	Short or integer
NP	Near pointer
P	Pointer

Continue table

Prefix	Meaning
L	Long Integer
Lp	Long pointer
S	String
SZ	String ending with zero
TM	Body Size
W	Unsigned integer
X, Y	Unsigned integer (representing the coordinates of X or Y)