So I've just started tonight with AutoIt, trying to create something simple for myself. Can't understand how to check if a treeviewitem is checked and if it is checked, add results to my listview in accordance to which treeviewitem's are checked. Here's what I have right now: #include <GuiConstantsEx.au3> #include <AVIConstants.au3> #include <TreeViewConstants.au3> ; GUI GuiCreate("Sample", 800, 400) GuiSetIcon(@SystemDir & "\mspaint.exe", 0) GuiCtrlCreateLabel(