Can more than one treeviewnode in a tree be selected at once?

Thanks man. I tried this, but don't see any difference. The listview is the one that really matters.

I am starting a new project right now. Getting this to work is fundamental, and I am losing time and money as long as it doesn't work.

Any ideas? I found something somewhere saying that constant equals $0004.

w=640
h=480
Global window=CreateWindow(PROGRAMTITLE,(ClientWidth(Desktop())-w)/2,(ClientHeight(Desktop())-h)/2,w,h,0)

list=CreateListBox(x,y,ClientWidth(window),ClientHeight(window)-y,window)
SetGadgetLayout list,1,1,1,1
For n=1 To 100
	AddGadgetItem list,"item "+n
	Next

hwnd=QueryObject(list,1)
SetWindowLong hwnd,$0004,1

Repeat
	Select WaitEvent()
		Case $803
			End
		End Select
	Forever