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z-order of desktop's icons & child window

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Hi, all!

I know insert a GUI (window) inside Desktop:

#Include <WinAPI.au3>
#Include <Constants.au3>

$hGui1 = GUICreate("GUI Embedder",420,300,-1,-1,$WS_POPUP)
$btclose=GUICtrlCreateButton("Fermer / Close",100,125,220,50)
$origParent1 = DllCall("user32.dll", "int", "SetParent", "hwnd", $hGui1, "hwnd",$hbureau)
WinMove($hGui1, "", 80,50)
While 1
    $Msg = GUIGetMsg()    
    If ($Msg=$GUI_EVENT_CLOSE) Or ($Msg=$btclose) Then
        DllCall("user32.dll", "int", "SetParent", "hwnd", $hGui1, "hwnd", $origParent1[0])
But the GUI is over icons. Now, I would want it below icons (like background-screen/wallpaper).

I tried

_WinAPI_SetWindowPos($hGui1, $HWND_BOTTOM, 80, 50, 420, 300, $SWP_NOACTIVATE)

to change z-order, but that works with a window inside desktop.

An idea?

Edited by Michel Claveau
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Thank you.

But the word "trivial" is not synonym of "impossible".

If it is possible, we can re-create (replace) the old (XP) ActiveDesktop, which does not exist any more in Vista & Win-7, with an Autoit's script.

I think you are unlikely to be able to do that. I suspect the desktop is continually updated to ensure that the z-order is kept as required.

Maybe instead you could create your window, and copy all the icons and shortcuts on the desktop into your window.

Serial port communications UDF Includes functions for binary transmission and reception.printing UDF Useful for graphs, forms, labels, reports etc.Add User Call Tips to SciTE for functions in UDFs not included with AutoIt and for your own scripts.Functions with parameters in OnEvent mode and for Hot Keys One function replaces GuiSetOnEvent, GuiCtrlSetOnEvent and HotKeySet.UDF IsConnected2 for notification of status of connected state of many urls or IPs, without slowing the script.
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