Return the value of an environment variable.
Source position: osutilsh.inc line 27
| function GetEnvironmentVariable( | 
| const EnvVar: AnsiString | 
| ):AnsiString; overload; | 
| const EnvVar: UnicodeString | 
| ):UnicodeString; overload; | 
GetEnvironmentVariable returns the value of the EnvVar environment variable. If the specified variable does not exist or EnvVar is empty, an empty string is returned.
| 
 | Return an environment variable by index. | |
| 
 | Return the number of variables in the environment. |