I have a simple application that I would like to sort of automate via switches. But when I do run it via switches I don't really want a user interface showing. I just want it to run, do it's job, print stuff out in the console, and exit. On the other hand if I don't run it with any switches I want the user interface to pop up. And in this case I don't really want a console window hanging around in the background.
Is there any way I can do this, or do I have to create two separate projects, one Console Application and one Windows Application?
Without implementing your own version of a console window the answer is no. When Windows loads you executable it decides whether or not to give you a console window based on data in the PE header. So you can make a windowed app not have a window but you can't make a windoed app have a console.