March 2000
Intermediate to advanced
576 pages
18h 13m
English
Content preview from Delphi in a Nutshell
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Name
FileMode Variable
Syntax
var FileMode: Integer;
Description
When
opening a binary file with Reset, Delphi always
opens the file using the mode specified by
FileMode. The possible values for
FileMode are as
follows:
- 0
Read only
- 1
Write only
- 2
Read and write
The default value is 2.
Tips and Tricks
To open an existing file for read-only access, be sure to set
FileModeto zero before callingReset. If you do not setFileMode,Resetwill fail when trying to open a read-only file, such as a file on a CD-ROM.To append to a binary file, set
FileModeto 1 or 2, open the file withReset, seek to the end of the file, and then begin writing.FileModeis not used when opening text files.FileModeis not used when opening a binary file withRewrite.
See Also
| Reset Procedure |
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