Ticket #3729: AutoIt - Buttons background color issue.au3

#include <GUIConstants.au3>
#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>

Opt("GUIOnEventMode", 1) ; 1 = enable
Opt("GUIEventOptions", 0) ; 0 = (default) Windows behavior on click on Minimize,Restore, Maximize, Resize.

$hGui = GUICreate("Test double event")
GUISetBkColor(0xABCDEF, $hGui)

GUISetOnEvent($GUI_EVENT_CLOSE, "guiEventsHandler", $hGui)
GUISetOnEvent($GUI_EVENT_RESTORE, "guiEventsHandler", $hGui)
GUISetOnEvent($GUI_EVENT_MINIMIZE, "guiEventsHandler", $hGui)

GuiCtrlCreateButton("Test input", 8, 8, 100, 30)
GUICtrlSetOnEvent(-1, buttonHandler)

GuiCtrlCreateButton("Test input", 8, 46, 100, 30)
GUICtrlSetOnEvent(-1, buttonHandler2)
GUICtrlSetBkColor(-1, 0xABCDEF)

GuiCtrlCreateInput("asdasd", 8, 84, 100, 30)
GUICtrlSetOnEvent(-1, inputHandler)

GUISetState()

While 1
        Sleep(10)
WEnd

Func guiEventsHandler()
        If @GUI_CtrlId == $GUI_EVENT_CLOSE Then Exit
        If @GUI_CtrlId == $GUI_EVENT_RESTORE Then GUISetState(@SW_RESTORE, @GUI_WinHandle)
        If @GUI_CtrlId == $GUI_EVENT_MAXIMIZE Then GUISetState(@SW_MAXIMIZE, @GUI_WinHandle)
        If @GUI_CtrlId == $GUI_EVENT_MINIMIZE Then GUISetState(@SW_MINIMIZE, @GUI_WinHandle)
EndFunc

Func buttonHandler()
        MsgBox(0, "Button handler", "Got an event from the first button")
EndFunc

Func buttonHandler2()
        MsgBox(0, "Button handler", "Got an event from the second button")
EndFunc

Func inputHandler()
        MsgBox(0, "Input handler", "Got an event from the input")
EndFunc