procedure TForm1.ApplicationEvents1Message(var Msg: tagMSG;
var Handled: Boolean);
begin
if (Msg.message = wm_char) then //key press
begin
if (Msg.wParam = 45) then //'-'鍵
begin
TrackBar1.Position := TrackBar1.Position-1;
end
else if (Msg.wParam = 43) or (Msg.wParam = 61) then //'+'鍵 大键盘61,小键盘43
begin
TrackBar1.Position := TrackBar1.Position+1;
end;