Hungarian Notation

Developed by Charles Symonyi
Prevalent in Win32 code
Composed by the sequence
1. Tag (indicates type)
2. Base name (distinguishes identifiers with same type)
3. Qualifier (standard differentiators)
Often abused to encode hardware-dependent types (e.g. WORD)

Primitive Types

Construct	Meaning
b	Flag (boolean) primitive type
dw	Double word (32 bit wide) with arbitrary contents
w	Word with arbitrary contents (typically unsigned)
b	Byte with arbitrary contents
ch	Character
sz	Pointer to first character of a null-terminated string
h	Handle of a heap-allocated object
fn	Function
i	Integer
l	Long integer (32-bit wide)
n	Short integer (16-bit wide)

Type Constructions

Construct	Meaning
pX	Pointer to X
dX	Difference between two instances of X
cX	Count of instances of type X
mpX Y	Array (map) of Ys indexed by X
rgX	Array (range) of Xs
iX	Index to array rg X
cbX	Size of instances of X in bytes
cwX	Size of instances of X in words

Name Qualifiers

Construct	Meaning
XFirst	First element of an ordered set of type X values
XLast	Last element of an ordered set of type X values.
XNext	Next element of an ordered set of type X values
XPrev	Previous element of an ordered set of type X values
XLim	The upper limit of a range of X values.
XMac	The current upper limit
XNil	A special Nil value of type X
XT	A temporary value of type X

VB Primitive Types

Construct	Meaning
cur	Currency
time	Time
date	Date
dt	Date and time combined
qry	Database query
tbl	Database table

VB Common Controls

Construct	Meaning
frm	Form
mnu	Form menu
cmd	Command button
chk	Check button
opt	Radio button
lbl	Text label
txt	Text edit box
pb	Picture box
pic	Picture
lst	List box
cbo	Combo box
tmr	Timer