^t::

Gui, Add, TreeView

P1 := TV_Add("First parent")

P1C1 := TV_Add("Parent 1's first child", P1) ; Specify P1 to be this item's parent.

P2 := TV_Add("Second parent")

P2C1 := TV_Add("Parent 2's first child", P2)

P2C2 := TV_Add("Parent 2's second child", P2)

P2C2C1 := TV_Add("Child 2's first child", P2C2)

Gui, Show ; Show the window and its TreeView.

return

GuiClose: ; Exit the script when the user closes the TreeView's GUI window.

ExitApp