File Handling (Generic)

• Dir - Returns a filename that matches a pattern
  
  
  
  •  temp $ = Dir ("*.*")
  
  
• CurDir - Returns the current directory
  
  
  
  • temp$ = CurDir
  
  
• MkDir - Creates a directory
  
  
  
  •  mkdir  ( "newdirectoryname" )
  
  
• ChDir - Changes the current directory to a new location
  
  
  
  •  chdir  ( "newdirectoryname" )
  
  
• ChDrive - Changes the current drive
  
  
  
  •  ChDirve  "A"
  
  
• RmDir - Removes the indicated directory
  
  
  
  •  rmdir  ( "directoryname" )
  
  
• Freefile - Returns an unused file handle
  
  
  
  •  i  = freefile
  
  
• Open - Opens a file for access, locking it from other applications
  
  
  
  • open "filename" for input as #1
  
  
• Close - Closes a file so that other applications may access it
  
  
  
  • close #1
  
  
• LOF - Returns the length of a file in bytes
  
  
  
  •  i  = lof ( #1 )
  
  
• EOF - Returns a boolean value to indicate if the end of a file has been reached
  
  
  
  •  statusvariable  = eof ( #1 )
  
  
• Name As - Renames a file
  
  
  
  • name "filename1" as "filename2"
  
  
• Kill - Deletes a file
  
  
  
  • kill "filename"
  
  
• Fileattr - Returns attribute information about a file
  
  
  
  •  i  = int ( tempvariable )
  
  
• GetAttr - Returns attributes of a file or directory
  
  
  
  •  i  = GetAttr("c:\windows\temp")
  
  
• SetAttr - Sets the attributes of a file
  
  
  
  •  SetAttr  pathname, vbHidden
  
  
• Reset - Closes all disk files opened by the OPEN statement
  
  
  
  • Reset
  
  
• FileDateTime - Returns data file was created or last edited
  
  
  
  •  FileDateTime  ( filename )
  
  
• FileLen - Returns length of file in bytes
  
  
  
  •  FileLen  ( filename )
  
  
• FileCopy - Copies a file to a new name
  
  
  
  •  FileCopy  sourcefile, destinationfile
  
  
• Lock - Controls access to a part or all of a file opened by OPEN
  
  
  
  • Lock #1
  
  
• UnLock - Restores access to a part or all of a file opended by OPEN
  
  
  
  •  UnLock  #1
  
  
• Width # - Set the output line width used by the OPEN statement
  
  
  
  • Width #2, 80

File Handling - ASCII-specific

• Line Input - Reads an entire line of ASCII text
  
  
  
  • line input #1, tempvariable$
  
  
• Write - Puts data in a file, with separators for the data
  
  
  
  • write #1, tempvariable$
  
  
• Print - Puts data in a file with no separators
  
  
  
  • print #1, tempvariable$
  
  
•  Spc - Used in a print statement to move a number of spaces
  
  
  
  • Print #2, var1 spc(15) var2
  
  
• Tab - Used in a print statement to move to TAB locations
  
  
  
  • Print #2, var1 Tab(20) var2

File Handling - Binary-specific

• Get - Reads data from a file
  
  
  
  • get #1, anyvariable
  
  
• Put - Puts data into a file
  
  
  
  • put #1, anyvariable
  
  
• Seek - Moves the current pointer to a defined location in a file
  
  
  
  • seek #1, 26
  
  
• Input
  
  
  
  • input #1, anyvariable
  
  
• Loc - Returns current position with an open file
  
  
  
  •  i  = Loc(#2)