Windows API

ID #1020

How to read from application environment variable?

You need use Windows API function GetEnvironmentVariable. Let see the example for reading of content %TEMP%: 
MAP
  MODULE('kernel32.lib')
GetEnvironmentVariable(*CSTRING lpName,*CSTRING lpBuffer,ULONG nSize), |
    ULONG,RAW,PASCAL,PROC,
  END
END

! Data Section
EnvVariable       CSTRING('TEMP')
EnvVariableBuffer CSTRING(255)
EnvVariableSize   ULONG

! Code Section
EnvVariableSize = SIZE(EnvVariableBuffer)
GetEnvironmentVariable(EnvVariable,EnvVariableBuffer,EnvVariableSize)
MESSAGE('Your temporary directory is: ' & EnvVariableBuffer)

Tags: environment

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Last update: 2007-07-17 09:30
Author: Aleksey Timkov
Revision: 1.6

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