en:docs:fapi:dosqcurdisk
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—en:docs:fapi:dosqcurdisk [2018/08/28 09:00] – created prokushev
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 +This call determines the current default drive for the requesting process.
 +
 +==Syntax==
 + DosQCurDisk (DriveNumber, LogicalDriveMap)
 +
 +==Parameters==
 +;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:
 + '''Value  Definition'''
 + 0       The logical drive does not exist.
 + 1       The logical drive exists.
 +
 +==Return Code==
 +rc (USHORT) - return
 +Return code description is:
 +* 0 NO_ERROR
 +
 +==Bindings==
 +===C Binding===
 +<PRE>
 +#define INCL_DOSFILEMGR
 +
 +USHORT  rc = DosQCurDisk(DriveNumber, LogicalDriveMap);
 +PUSHORT DriveNumber;     /* Default drive number (returned) */
 +PULONG  LogicalDriveMap; /* Drive map area (returned) */
 +
 +USHORT  rc;              /* return code */
 +</PRE>
 +
 +===MASM Binding===
 +<PRE>
 +EXTRN  DosQCurDisk:FAR
 +INCL_DOSFILEMGR     EQU 1
 +
 +PUSH@  WORD    DriveNumber     ;Default drive number (returned)
 +PUSH@  DWORD   LogicalDriveMap ;Drive map area (returned)
 +CALL   DosQCurDisk
 +
 +Returns WORD
 +
 +=== Note ===
 +
 +Text based on http://www.edm2.com/index.php/DosQCurDisk
 +
 +{{page>en:templates:fapi}}
 +