How to put event for treeview

[scila1996 0]

#include <GUIConstantsEx.au3>
#include <GuiTreeView.au3>
#include <WindowsConstants.au3>
#include <MsgBoxConstants.au3>

Opt("GUIOnEventMode",1)

Local $hGUI = GUICreate("ControlTreeView Example", 212, 212)
Local $iTreeView_1 = GUICtrlCreateTreeView(6, 6, 200, 160, BitOR($TVS_HASBUTTONS, $TVS_HASLINES, $TVS_LINESATROOT, $TVS_CHECKBOXES), $WS_EX_CLIENTEDGE)
Local $hTreeView_1 = ControlGetHandle($hGUI, "", $iTreeView_1)
Local $but = GUICtrlCreateButton("Click Me",120,175,70,30)
Local $iRoot = GUICtrlCreateTreeViewItem(" Select Drive", $iTreeView_1)
Local $dg = DriveGetDrive("FIXED")

For $itest = 1 To $dg[0]
    GUICtrlCreateTreeViewItem(StringUpper($dg[$itest]), $iRoot)
Next
    _GUICtrlTreeView_Expand($iTreeView_1)
    GUISetState(@SW_SHOW, $hGUI)

GUISetOnEvent(-3,"_clickexit")

Func _clickexit()
    Exit
EndFunc

While 1
    Sleep(10)
WEnd

I have created a list of tree drive 

 

But I know the event or set the variable if one or more of the selected drive 

I have 2 problems 

 

+ If I check the box "Select Drive" ---> automatic check on the drive 

 

+ Click Me When click will list the selected drive

[jguinch 350]

An example >here (with onevent mode)