private void tsmiCloseDevice_Click(object sender, EventArgs e)
{
m_mutex.WaitOne();
DeviceForm activeDeviceForm = GetActiveDeviceForm();
if (activeDeviceForm != null)
{
activeDeviceForm.DeviceFormClose(true);
activeDeviceForm.Close();
comPortTreeForm.RemovePort(activeDeviceForm.devInfo.ComPortInfo.ComPort);
}
comPortTreeForm.FindNodeToOpen();
m_mutex.ReleaseMutex();
}