TreeGadget How to know Item Number ?

[Fig]

I would like to figure out what is the item number of each item because I need to use them to SetGagdetItemData.
Actually, AddGadgetItem use -1 for position and I don't know how to get the item number assigned.
How do I do that ?

Code: Select all

  If OpenWindow(0, 0, 0, 355, 180, "TreeGadget", #PB_Window_SystemMenu | #PB_Window_ScreenCentered)
    TreeGadget(0, 10, 10, 160, 160)                                         ; TreeGadget standard
    TreeGadget(1, 180, 10, 160, 160, #PB_Tree_CheckBoxes | #PB_Tree_NoLines)  ; TreeGadget with Checkboxes + NoLines
    For ID = 0 To 1
      For a = 0 To 10
        AddGadgetItem (ID, -1, "Normal Item "+Str(a), 0, 0) ; if you want to add an image, use
        AddGadgetItem (ID, -1, "Node "+Str(a), 0, 0) 
        AddGadgetItem(ID, -1, "Sub-Item 1", 0, 1)
        AddGadgetItem(ID, -1, "Sub-Item 2", 0, 1)
        AddGadgetItem(ID, -1, "Sub-Item 3", 0, 1)
        AddGadgetItem(ID, -1, "Sub-Item 4", 0, 1)
        AddGadgetItem (ID, -1, "File "+Str(a), 0, 0)
      Next
    Next
    Repeat : Until WaitWindowEvent() = #PB_Event_CloseWindow
  EndIf

[wombats]

If using -1 for the position, immediately after, you can use CountGadgetItems(gadget) - 1.

[Fig]

Thank you... It will do the job.