Wie kann dies erreicht werden? VirtualTreeView

[newfixes]

Zitat von Daniel:

we do have an english-speaking forum, that might be more suitable for you?
https://en.delphipraxis.net
If you want to use it - what is absolutely your decision - you can copy your account to the english forum using the following page:
https://www.delphipraxis.net/pages/clone_account.html

Vielen Dank！