This call determines the current default drive for the requesting process.
DosQCurDisk
(DriveNumber, LogicalDriveMap)
DriveNumber (PUSHORT) - output
Address of
the number of the default drive, for example:
Value
Definition
1
A
2
B
.
.
.
LogicalDriveMap
(PULONG) - output
Address of the bit map (stored
in the low-order portion of the 32-bit, doubleword area) where the system
returns the mapping of the logical drives. Logical Drives A to Z have a
one-to-one mapping with the bit positions 0 to 25 of the map; for example,
bit 0 is drive A, bit 1 is drive B, and so forth. The settings of these
bits indicate which drives exist: