如何将C/C++程序转译成Delphi(四)

2.3. #defines as constants

C and C++ use #defines in several ways. In a C header file #define can be used

for declaring a constant

for declaring a symbol for conditional compilation

for macros

This chapter describes the translation of #define into Delphi constants.

The format for declaring constants in C is:

#define NameOfConstant Value

For example:

#define TIME_ZONE_ID_UNKNOWN 0

#define TIME_ZONE_ID_STANDARD 1

#define TIME_ZONE_ID_DAYLIGHT 2

The translation in Delphi is:

CONST

TIME_ZONE_ID_UNKNOWN = 0;

TIME_ZONE_ID_STANDARD = 1;

TIME_ZONE_ID_DAYLIGHT = 2;

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2.3.1. Hexadecimal values

C uses the prefix 0x to specify a hexadecimal value. For example, the C declaration

#define MY_CONSTANT 0xFF

translates to Delphi as

CONST

MY_CONSTANT = $FF;

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