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 FCLOSE()
 Close an open binary file and write DOS buffers to disk
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 Syntax

     FCLOSE(<nHandle>) --> lError

 Arguments

     <nHandle> is the file handle obtained previously from FOPEN() or
     FCREATE().

 Returns

     FCLOSE() returns false (.F.) if an error occurs while writing;
     otherwise, it returns true (.T.).

 Description

     FCLOSE() is a low-level file function that closes binary files and
     forces the associated DOS buffers to be written to disk.  If the
     operation fails, FCLOSE() returns false (.F.).  FERROR() can then be
     used to determine the reason for the failure.  For example, attempting
     to use FCLOSE() with an invalid handle returns false (.F.), and FERROR()
     returns DOS error 6, invalid handle.  See FERROR() for a complete list
     of error numbers.

     Warning!  This function allows low-level access to DOS files and
     devices.  It should be used with extreme care and requires a thorough
     knowledge of the operating system.

 Examples

     .  This example uses FCLOSE() to close a newly created binary
        file and displays an error message if the close fails:

        #include "Fileio.ch"
        //
        nHandle := FCREATE("Testfile", FC_NORMAL)
        IF !FCLOSE(nHandle)
           ? "Error closing file, error number: ", FERROR()
        ENDIF

 Files:  Library is CLIPPER.LIB.