I added tristate to the UDF TV Explorer, but is not working right, it does not select any subfolders ... and i'm having trouble with some functions also as: MyCtrlSetItemState() MyCtrlGetItemState() CheckChildItems() *I think the problem of the tristate is here* CheckParents() *or here* TV Explorer here: and functions used to add a tristate came of this topic: Video of the problem: https://dl.dropbox.com/u/58055873/Tv%20Explorer%20Treeview.wmv the result are atacched! Can someone try to fix please? thanks and sorry for my bad English! TVExplorer Tristate.rar