Draw a rectangle in my GUI

[Info]

I need a method to draw a rectangle as fast as possible on a GUI.

I thought of using GDIPlus but I found only examples of drawing on an image.

[Rogue5099]

#include <GuiConstantsEx.au3>
#include <GDIPlus.au3>

Opt('MustDeclareVars', 1)

_Main()

Func _Main()
    Local $hGUI, $hGraphic, $hPen

    ; Create GUI
    $hGUI = GUICreate("GDI+", 400, 300)
    GUISetState()

    ; Draw line
    _GDIPlus_Startup ()
    $hGraphic = _GDIPlus_GraphicsCreateFromHWND ($hGUI)
    $hPen = _GDIPlus_PenCreate ()
    _GDIPlus_GraphicsDrawLine ($hGraphic, 10, 150, 390, 150, $hPen)
    _GDIPlus_GraphicsDrawLine ($hGraphic, 10, 100, 10, 150, $hPen)
    _GDIPlus_GraphicsDrawLine ($hGraphic, 10, 100, 390, 100, $hPen)
    _GDIPlus_GraphicsDrawLine ($hGraphic, 390, 100, 390, 150, $hPen)

    ; Loop until user exits
    Do
    Until GUIGetMsg() = $GUI_EVENT_CLOSE

    ; Clean up resources
    _GDIPlus_PenDispose ($hPen)
    _GDIPlus_GraphicsDispose ($hGraphic)
    _GDIPlus_ShutDown ()

EndFunc   ;==>_Main