//ROLETE DO MOUSE NOS COMPONENTES

 

void __fastcall TForm1::ApplicationEvents1Message(tagMSG &Msg,

      bool &Handled)

{

 if (Msg.message == WM_MOUSEWHEEL)

  {

    Msg.message = WM_KEYDOWN;

    Msg.lParam = 0;

    Msg.wParam = ((signed long)Msg.wParam > 0 ? VK_UP : VK_DOWN);

    Handled = false;

  }       

}