| Description |
The CloseFile procedure closes an open file given by FileHandle.
The file must have been assigned, and opened with Append, Reset or ReWrite.
The file is closed, and the handle is made available for further assignment to files.
|
|
| Related commands |
| Append |
|
Open a text file to allow appending of text to the end |
| AssignFile |
|
Assigns a file handle to a binary or text file |
| AssignPrn |
|
Treats the printer as a text file - an easy way of printing text |
| DeleteFile |
|
Delete a file specified by its file name |
| Erase |
|
Erase a file |
| RenameFile |
|
Rename a file or directory |
| Reset |
|
Open a text file for reading, or binary file for read/write |
| ReWrite |
|
Open a text or binary file for write access |
| TextFile |
|
Declares a file type for storing lines of text |
|
|
|
| Example code : Closing after write and read operations |
// Full Unit code.
// -----------------------------------------------------------
// You must store this code in a unit called Unit1 with a form
// called Form1 that has an OnCreate event called FormCreate.
unit Unit1;
interface
uses
// The System unit does not need to be defined
Forms, Dialogs;
type
TForm1 = class(TForm)
procedure FormCreate(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm} // Include form definitions
procedure TForm1.FormCreate(Sender: TObject);
var
myFile : TextFile;
text : string;
begin
// Try to open the Test.txt file for writing to
AssignFile(myFile, 'Test.txt');
ReWrite(myFile);
// Write a couple of well known words to this file
WriteLn(myFile, 'Hello');
WriteLn(myFile, 'World');
// Close the file
CloseFile(myFile);
// Reopen the file in read only mode
Reset(myFile);
// Display the file contents
while not Eof(myFile) do
begin
ReadLn(myFile, text);
ShowMessage(text);
end;
// Close the file for the last time
CloseFile(myFile);
end;
end.
|
| Hide full unit code |
Hello
World
|
|