Naming Conventions for Parameters

Most DDE parameter names and local variables. These variables have a prefix that indicates the general type of the parameter, followed by one or more words that describe the content of the parameter. Prefixes presented in this book are:

a

Atom

c

Character (a 1-byte value)

f

Bit flags packed into a 16-bit integer

h

16-bit handle

p

Short (16-bit) pointer

lp

Long (32-bit) pointer

w

Short (16-bit) unsigned integer

u

Unsigned integer

sz

Null-terminated character string