File Mode Constants

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This topic lists all file mode constants that can used in Object Pascal file routines. These constants are individually described at SysUtils Constants.


Constant Description
fmOpenRead Specifies that a file should be opened for reading only.
fmOpenReadWrite Specifies that a file should be opened for reading and writing.
fmOpenWrite Specifies that a file should be opened for writing only.
fmShareCompat Specifies file sharing that is FCB-compatible.

The File Control Block contains the drive and file names, the file type, and information used by Windows when opening files.

fmShareDenyNone Specifies file sharing that does not prevent file access by other applications.
fmShareDenyRead Specifies file sharing that prevents file read access by other applications.
fmShareDenyWrite Specifies file sharing that prevents file write access by other applications.
fmShareExclusive Specifies file sharing that prevents any file access by other applications.


See Also