/* override system windows message of Serial put in or pull out */
protected override void DefWndProc(ref Message m)
{
if (m.Msg == (int)WMS.WM_DEVICECHANGE) //device state change, put in or pull out
{
if (m.WParam.ToInt32() == (Int32)DBT.DBT_DEVICEREMOVECOMPLETE) //USB serial device remove
{
btnChangeCloseUartUI();
com.ClearUIAsyncHandle();
dsPortName.DataSource = SelfdefSerial.GetPortNames();
}
else if (m.WParam.ToInt32() == (Int32)DBT.DBT_DEVICEARRIVAL) //USB serial device put in
{
dsPortName.DataSource = SelfdefSerial.GetPortNames();
}
}
base.DefWndProc(ref m);
}
private void dsPortName_DropDown(object sender, EventArgs e)
{
string [] portname = SelfdefSerial.GetPortNames();
dsPortName.DataSource = portname;
}