FLUSH function
Purpose:
FLUSH forces any data held in a write to file buffer
to be written to the file. The file remains open after FLUSH has
executed.
Syntax:
RetVal = FLUSH(hFile AS FILE)
Return Value:
- Data type: INTEGER
RetVal If successful, 0. If not successful,
EOF is returned and errno is set to indicate the error.
Parameters:
- Data type: FILE
hFile The handle of file to be flushed.
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