/// <summary>
/// Check whether the GUI process has already been started.
/// </summary>
public static bool CheckSingleton(string processName, IntPtr windowHandle)
{
if (IsDuplicateInstance(processName) && !Settings.Default.IsRestarting)
{
windowHandle.ActivateWindow();
Exit();
return(false);
}
Settings.Default.IsRestarting = false;
return(true);
}