Dialog Box Entirely From C

Hi all,

I need to be able to pop up a dialog box to get some text from the user. Now the hard part, I need to do it entirely in C++ with no script calls.

Does anyone have any example of how to do this? I'm confident it can be done, but am a little lost on where to start.

I need to be able to do this all from C++ because the state of the process is in question (e.g. I'm in the catch portion of an exception and I am trying to fail gracefully.)

Thanks
Todd