OpenEdge Development:<br />Progress 4GL Reference OS-DRIVES function

Release 10.1A: OpenEdge Development:
Progress 4GL Reference

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
  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 ("").