I am using both Purify & BoundChecker. They can coexists just fine. Some leaks better detected by BC (Gui & COm) others much better caught by Purify. First I check with BoundChecker ( better UI + integration ). Next switch to purify rebuild project to rid of BC code. My main complain about purify is if code containts InitCommonControlsEx calls purify goes nutz. Brian

Are you attempting to steal the focus anywhere in your program? Nish Sonork ID 100.9786 voidmain www.busterboy.org If you don't find me on CP, I'll be at Bob's HungOut

This true for all the cases where I've wanted to change the font on a particular control, but it does NOT work when you attempt it on a file dialog for some reason. I'm truly stumped. Thanks for your reply, though.