wpQueryLogicalDrive - Syntax

This instance method returns the logical drive number that is represented by this disk object.

#define INCL_WINWORKPLACE
#include <os2.h>

WPDisk     *somSelf;   /*  Pointer to the object on which the method is being invoked. */
ULONG       ulDiskID;  /*  Logical drive identifier. */

ulDiskID = _wpQueryLogicalDrive(somSelf);