Usually you have to suffer the pain of the disk-writes because you need the log-file to analyze the reason of some crash and then the unflushed memory buffer to loose would not help much...
The problem of disk space is normally solved by log rotating (parameters line maxlogfilesize and maxlogfilecount of a usual logging framework).
Indeed - I want to add cyclic logs (or rotating, if you wish) to the logging lib - in the very near future. Still, Darren, I think it should be pretty easy do do such a class yourself - I assume it should not be too difficult. Best, John -- John Torjo, Contributing editor, C/C++ Users Journal -- "Win32 GUI Generics" -- generics & GUI do mix, after all -- http://www.torjo.com/win32gui/ -- v1.5 - tooltips at your fingertips (work for menus too!) + bitmap buttons (work for MessageBox too!) + tab dialogs, hyper links, lite html