GUI Handle not displaying with -1

[charvi]

Looks like a bug... the example below does not work in stable 3.2.12.1 nor in beta 3.2.13.11

Replace the -1 with the $h handle and it will work.

Was the -1 not meaning 'the last GUI' ?

#include <GUIConstantsEx.au3>

Opt('MustDeclareVars', 1)

Example()

Func Example()
    Local $h,$msg
    
    $h=GUICreate("TEST")
    GUISetBkColor(0x838b83, -1)  ; replace -1 with $h and it will work

    GUISetState()

    While 1
        $msg = GUIGetMsg()
        
        If $msg = $GUI_EVENT_CLOSE Then ExitLoop
    WEnd
EndFunc   ;==>Example

[KaFu]

-1 is last created ctrl... never read anything about window

GUISetBkColor(0x838b83) works for last created

[charvi]

-1 is last created ctrl... never read anything about window

GUISetBkColor(0x838b83) works for last created

Ah, only for controls, not for windows, yes, that's true. My confusion. Thanks KaFu.