qb64/internal/help/ENVIRON.txt

The [[ENVIRON]] statement is used to temporarily set or change an environmental string value.


{{PageSyntax}}
: [[ENVIRON]] {{Parameter|stringExpression$}}


{{PageDescription}}
* The {{Parameter|stringExpression$}} must include the environmental parameter ID and the setting:
** Using an '''=''' sign: [[ENVIRON]] "parameterID=setting"
** Using a space: [[ENVIRON]] "parameterID setting"
* If the parameter ID did not previously exist in the environmental string table, it is appended to the end of the table.
* If a parameter ID did exist, it is deleted and the new value is appended to end of the list.
* The [[_ENVIRONCOUNT]] function returns the number of key/value pairs that currently exist.
* Any changes made at runtime are discarded when your program ends.


{{PageSeeAlso}}
* [[ENVIRON$]], [[_ENVIRONCOUNT]]
* [[Windows Environment]]


{{PageNavigation}}