Onscreen Error Logger?

I try to stay away from the DXUT code, so I have no idea how to do what you want. If I were you, I'd just write everything to a file. Especially for errors that you will quickly fix and never see again (hopefully). I would just create a file, write the error to it, and close it every time I got an error. You could change the filename to keep all the errors, or just overwrite the file each error and view the last error.

Hope that helps.

Agreed. Any decent text editor (Kate/whatever Gnome provides, UltraEdit, BBEdit, jEdit) will usually have a reload option to reload a logfile from disk if changes are detected, so writing your own such application functionality is kind of pointless anyways.

I generally use both: a runtime console (used to display logging and enter scripting commands) and a file saved to disk. It wasn't much work at all to implement the console (just draw a shaded quad and text), and is pretty useful. Also, with the disk file, it is important to flush the file writing after each log entry - otherwise, if the app crashes, you can lose the un-written logging entries.