en:docs:fapi:dosqcurdisk

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en:docs:fapi:dosqcurdisk [2018/08/28 11:00] (current)
prokushev created
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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}}
 +
  

en/docs/fapi/dosqcurdisk.txt · Last modified: 2018/08/28 11:00 by prokushev