Delphi Programmer's Resources/Examples

Getting a temporary filename from Windows:

{
  This sample code is presented as is.
  Although every reasonable effort has been
  made to insure the soundness of the example
  below, Idioma Software inc. makes no warranty
  of any kind with regard to this program sample
  either implicitly or explicitly.

  This program example may be freely distributed for the
  use of writing computer programs only. Any other use of
  this material requires written permission from Idioma Software inc.

  (c) 1997 Idioma Software inc. All rights reserved.
 }

{
 This example shows how to get a temporary file name
}
function TempFileName : String;
{Author Jon Vote 10/97}

const Unique : word = 0;

var DriveLetter : char;
    pTempFileName : pchar;
    dummy         : word;
    Prefix : pChar;

begin
 Prefix := 'TMP';
 pTempFileName := StrAlloc(256);
 DriveLetter := GetTempDrive(' ');
 {convert 'A' to '1', ... 'C' to '3' - etc}
 DriveLetter := chr(ord(DriveLetter) - 18);
 dummy := GetTempFileName(DriveLetter, PreFix, Unique, pTempFileName);
 ShowMessage('Temp filename is: ' + strpas(pTempFileName));
 TempFileName := strpas(pTempFileName);
end;