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CMPLIB32.DCL problems

1. Close Delphi
2. Look for a file called CMPLIB32.~DC in the same directory where you'd normally find CMPLIB32.DCL. By default, this would be in "C:\Program Files\Borland\Delphi 2.0\Bin"
3. Copy CMPLIB32.~DC (backup of the last good compile of the components library) to CMPLIB32.DCL.
4. Restart Delphi and open the recovered CMPLIB32.DCL using "Component | Open Library..." menu option.

If you can't find the CMPLIB32.~DC, most likely your last option is to copy the CMPLIB32.DCL file that came with your Delphi install disk(s). Once you retrieve the original components file, you must reinstall components that you had installed since the original installation of Delphi.

var
  f : TextFile;
begin
  AssignFile( f, 'LPT1' );
  Rewrite( f );

  //
  // do your printing here...
  //
  WriteLn( f, 'hello, world!');

  CloseFile( f );
end;