protected override void WndProc(ref Message m)
{
// Don't process these messages here, because they will change the focus to this control
if((m.Msg == General.WM_LBUTTONDOWN) || (m.Msg == General.WM_LBUTTONDBLCLK) ||
(m.Msg == General.WM_MBUTTONDOWN) || (m.Msg == General.WM_MBUTTONDBLCLK) ||
(m.Msg == General.WM_RBUTTONDOWN) || (m.Msg == General.WM_RBUTTONDBLCLK))
return;
base.WndProc(ref m);
}