On Fri, 20 Nov 2015 18:57:10 +0000, TheDGuy wrote: > Thanks for your reply, > > now it gets more clear for me but how am i able to access the TreeView > within the CustomButton-Class? If i declare TreeView and TreeStore > public i get "static variable list cannot be read at compile time"? > > auto list = new List(); > auto treeView = new LanguageTree(list);
You need to declare them at the module scope but initialize them inside your main function, so: List list; LanguageTree treeView; then inside your main function: list = new List(); treeView = new LanguageTree(list);