This method is specific to version 2.1, or higher, of the OS/2 operating system.
This instance method is used to lock or unlock removable media in drives that support this feature.
#define INCL_WINWORKPLACE #include <os2.h> WPDisk *somSelf; /* Pointer to the object on which the method is being invoked. */ BOOL fLock; /* Lock flag. */ ULONG ulReturnCall; /* Return code from DosDevIOCtl category 8 Function 40. */ ulReturnCall = _wpLockDrive(somSelf, fLock);