>>The "Little Arrows" Appearance button is a handy addition to the range of >>controls, but it is hard to use. The demo below shows a way of making the >>button behave properly. >Great stuff. > >I use OS 8.1... I get a basic Appearance Manager with that. Were I to stick >some code that uses that into a program, without a check for App Mgr, what >would happen to someone using OS 7.5 or otherwise non-appearance OS? > >No buttons showing up then? Are some of these in the system file of the >older OS too? Little Arrows buttons were introduced with MacOS 8. Earlier than that I would expect the control simply not to be drawn, but a crash is of course possible. if ( system( _sysVers ) < 800 ) then "You_are_toast" Robert P.