1:

 if TreeView1.Selected=TreeView1.Items.Item[1] then					

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5:

  for x:=0 to TreeView.Items.Count-1 do begin
     if TreeView.Items[x].Selected = True then begin
         break;
     end;
  end;					

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9:

var node: TTreeNode;

...

node:=TreeView1.Items.AddChild(TreeView1.Items[0],'Child1');

...

if node.selected then ...					

1:

 if TreeView1.Items[3].item[0].Selected=True then