That fixed it! Thanks.
FYI, I'm also having issues with the Logitech mouse item mentioned in other messages. The main issue involves not being able to use the middle button for double-clicking on anything within Code::Blocks, although other programs are not affected. It is probably a wxWidgets thing, so there is probably not much you can do about it.
Another issue I'm having is that my tooltips for my program, that displayed correctly using two other development environments, now come out looking like they are Unicode. What used to be "Create new performance" now comes out as a square and a squiggly (tilde?). It is probably something to do with using the XP headers rather than the older headers in the other two environments. I've tried to ensure that Unicode is not defined, but have not yet gotten to the bottom of the problem. It looks like I'm going to have to tear into WinDbg, so more learning is directly in my future. I'll try to post what I come up with, unless anyone has seen this before, and has a solution.
Again, many thanks.
David