private void backgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
if (e.Error != null)
MessageBox.Show("Error: " + e.Error.Message);
else if (e.Cancelled)
StatusText("GCode send canceled.");
else if(e.Result.Equals(E_RESPONSE.E_OK))
StatusText("All the G-code was sent.");
else
MessageBox.Show("Error during send commands.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
enableControlsForPrinting();
// LogGPlotDisplay();
}