Title: use the autocomplete feature in a combobox?
{
Ever wondered how to make a combobox
with autocomplete like the one in the explorer?
The trick is in the CB_FINDSTRING API call.
}
var
LastKey: Word;
procedure TForm1.ComboBox1KeyDown(Sender: TObject; var Key: Word;
Shift: TShiftState);
begin
LastKey := Key;
end;
procedure TForm1.ComboBox1Change(Sender: TObject);
var
Srch: string;
ix: Integer;
begin
Srch := combobox1.Text;
if LastKey = $08 then
begin
LastKey := 0;
Exit;
end;
LastKey := 0;
ix := combobox1.Perform(CB_FINDSTRING, - 1, Longint(PChar(Srch)));
if ix CB_ERR then
begin
combobox1.ItemIndex := ix;
combobox1.SelStart := Length(Srch);
combobox1.SelLength := (Length(combobox1.Text) - Length(Srch));
end;
end;