Hey Marco, I still have your Delphi 5 book :-) FWIIW, where I work, I started using Delphi 5 when it came out. As of now we have about a dozen D5 desktop applications all essential for the core business that are in active use and supported as necessary, running happily on Windows 10. I don't see why it won't continue like this for another 15 years... The bosses (who are non-programmers) don't really care that D5 is o…
Try to replace it with Virtual TreeView: http://www.jam-software.com/virtual-treeview/ https://github.com/Virtual-TreeView/Virtual-TreeView/