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 ("").