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ABL Reference
ABL Syntax Reference : OS-DRIVES function
 

OS-DRIVES function

(Windows only)
Returns a comma-separated list of available drives.

Syntax

OS-DRIVES

Example

The following procedure populates a selection list with the output of the OS-DRIVES function, and then displays the list and prompts the user to select a drive. The procedure then informs the user that subsequent writes will be to the selected drive.
r-os-drv.p
DEFINE VARIABLE drives AS CHARACTER NO-UNDO LABEL "Select a Drive"
VIEW-AS SELECTION-LIST INNER-CHARS 3 INNER-LINES 5.

DEFINE FRAME f
drives.

drives:LIST-ITEMS = OS-DRIVES.
UPDATE drives WITH FRAME f.
MESSAGE "Files will be written to drive" INPUT drives:SCREEN-VALUE.

Note

On platforms other than Windows, OS-DRIVES compiles and executes, but returns the empty string ("").