The link on the web page says not posted since 2008 so suggested I start a new topic - but does not seem to an area dedicated to Component Building.
I read and folllowed this topic in the process of migrating a few components I modified for my use in Delphi and wanted to convert to update my limited program repertoire to Lazarus, one in particular was a composite component (several others on a panel);
The results were initially not good - all sorts of errors especially when deleting the components but when I re-read the page - the section
Using embedded (visual) components
surely ControlStyle csNoDesignSelectable should be added to ControlStyle not eliminated - the name is kind of presumably descripitive.
Well the improvements since I added it instead have been much better and am getting there, I hope.