Please consider replacing the "There only can be one instance of NinjaTrader" error

[Neil_]

I find the current "Error There only can be one instance of NinjaTrader running at a time (NinjaTrader/2)." error message and subsequent paragraph to be a bit jarring:



Please consider replacing this error message with the behavior of focusing on the currently running instance of NinjaTrader. That way when the user double-clicks on NinjaTrader wanting to go to NinjaTrader the user is taken to NinjaTrader.

Here is C# that will focus on the currently running instance of NinjaTrader:

bool successfullyAcquiredNinjaTraderMutex;
using (new Mutex(true, "NinjaTrader.exe", out successfullyAcquiredNinjaTraderMutex))
{
  if (successfullyAcquiredNinjaTraderMutex)
  {
    Application.Run(new NinjaTraderMainForm());
  }
  else
  {
    IntPtr soleInstanceOfNinjaTrader
      = Process.GetProcessesByName("NinjaTrader")[0].MainWindowHandle;
    SetForegroundWindow(soleInstanceOfNinjaTrader);
  }
}

[DllImport("user32.dll")]
private static extern bool SetForegroundWindow(IntPtr windowHandle);

[NinjaTrader_Ray]

Thanks for the suggestion and for kindly providing code sample.