Compilation conditionnelle (directive)

De Wiki1000

begin
  {$IFDEF XX}
  // code if XX is defined
  {$ELSE}
  // code if XX is not defined
  {$ENDIF}
end;

begin
  {$IFNDEF XX}
  // code if XX is not defined
  {$ELSE}
  // code if XX is defined
  {$ENDIF}
end;