[NumLock]

все знают - в справке пример есть:

FindFirst, FindNext, FindClose example

Код:

procedure TForm1.Button1Click(Sender: TObject);

var
  sr: TSearchRec;
  FileAttrs: Integer;
begin
  StringGrid1.RowCount := 1;
  if CheckBox1.Checked then
    FileAttrs := faReadOnly
  else
    FileAttrs := 0;
  if CheckBox2.Checked then
    FileAttrs := FileAttrs + faHidden;
  if CheckBox3.Checked then
    FileAttrs := FileAttrs + faSysFile;
  if CheckBox4.Checked then
    FileAttrs := FileAttrs + faVolumeID;
  if CheckBox5.Checked then

    FileAttrs := FileAttrs + faDirectory;
  if CheckBox6.Checked then
    FileAttrs := FileAttrs + faArchive;
  if CheckBox7.Checked then

    FileAttrs := FileAttrs + faAnyFile;

  with StringGrid1 do
  begin
    RowCount := 0;

    if FindFirst(Edit1.Text, FileAttrs, sr) = 0 then

    begin
      repeat
        if (sr.Attr and FileAttrs) = sr.Attr then
        begin
        RowCount := RowCount + 1;
        Cells[1,RowCount-1] := sr.Name;
        Cells[2,RowCount-1] := IntToStr(sr.Size);
        end;
      until FindNext(sr) <> 0;
      FindClose(sr);
    end;
  end;
end;