Retrieves an environment variable value.
function GetEnvironmentVariable(const Name: string): string; overload;
AnsiString GetEnvironmentVariable(const AnsiString Name);
SysUtils
Call GetEnvironmentVariable to retrieve the value of an environment variable, passed as Name, for the current process.
The case of the specified environment variable Name is ignored.
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Environment variable name |
Environment value |
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ALLUSERSPROFILE |
Generic user profile. |
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APPDATA |
Path of the application data folder. |
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CLIENTNAME |
Name of Client machine. |
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COMMONPROGRAMFILES |
Path of common program files folder. |
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COMPUTERNAME |
Name of Computer code is running on. |
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COMSPEC |
Path of the cmd.exe program. |
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HOMEDRIVE |
Current home drive designation, such as 'C:' |
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HOMEPATH |
Path to current location for document storage. |
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LOGONSERVER |
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NUMBER_OF_PROCESSORS |
Number of processors on current machine. |
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OS |
Base name of the Operating System. Note that Windows XP is given as Windows_NT. |
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PATH |
The current program path. |
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PATHEXT |
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PROCESSOR_ARCHITECTURE |
Type of CPU architecture. For example, X86 for Intel Pentium processors. |
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PROCESSOR_IDENTIFIER |
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PROCESSOR_LEVEL |
More detailed description of the CPU architecture. |
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PROCESSOR_REVISION |
Processor revision level. |
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PROGRAMFILES |
Path of the program files folder. |
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SESSIONNAME |
Name of the current OS session. |
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SYSTEMDRIVE |
Drive the OS operates from. |
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SYSTEMROOT |
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TEMP |
Path of the temporary files folder. |
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TMP |
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USERDOMAIN |
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USERNAME |
Name of the current user. |
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USERPROFILE |
Path of the folder holding the current user's information. |
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WINDIR |
Path of the Windows folder. |
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