HGetVol
HGetVol Obtain default volume/directory name and reference #include <Files.h> File Manager (PBxxx)
StringPtr volName; volume name (maximum length of 28 characters) short * vRefNum; volume or working directory reference number
long *dirID; volume's directory ID
Use HGetVol to get the vRefNum and dirID of the current default volume or directory. It is similar to PBGetVol, except it uses refNums and dirID's
noErr (0) No error
nsvErr (-35) No such volume
paramErr (-50) No default volume
Notes: The ioNamePtr field can be NIL to ignore the name. Otherwise, it should
point to a 28-byte buffer to hold the maximum 27-character name of the
default volume. Note that this does NOT return a multiple-name directory
name, even when a previous SetVol set the default to a working directory.