_GDIPlus_GraphicsFillRect and transperent windows

[Lakes]

In the example below _GDIPlus_GraphicsFillEllipse works as it should (draggable), but _GDIPlus_GraphicsFillRect is not draggable and the fill is corrupted if the mouse is clicked in the fill area.

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

Global Const $iOpacity = 220
Global Const $ULW_ALPHA = 2
Global $hGui, $hGraphic, $hBrush, $hPen, $hBrush
Global $dll = DllOpen("user32.dll")
Global $GuiSize = @DesktopWidth / 4  ; 200 ;
Global Const $WM_LBUTTONDOWN = 0x0201  ; Drag Window 1 of 3 addin

Opt("MustDeclareVars", 1)
Opt("GUIOnEventMode", 1)

Rectangles()

Func Rectangles()
    Local $hWnd, $hDC, $hBitmap, $pSize, $tSize, $pSource, $tSource, $pBlend, $tBlend,$hPen
    
    $hGui = GUICreate("GDI Rectangles", 100, 200, -1, -1, 0, BitOR($WS_EX_LAYERED, $WS_EX_TOPMOST))
    GUIRegisterMsg($WM_LBUTTONDOWN, "_WinMove")    ; Drag Window 2 of 3 addin
    ;GUIRegisterMsg($WM_NCHITTEST, "WM_NCHITTEST")
    GUISetState()
    _GDIPlus_Startup ()
    $hWnd = _WinAPI_GetDC (0)
    $hDC = _WinAPI_CreateCompatibleDC ($hWnd)
    $hBitmap = _WinAPI_CreateCompatibleBitmap ($hWnd, $GuiSize, $GuiSize)
    _WinAPI_SelectObject ($hDC, $hBitmap)
    $hGraphic = _GDIPlus_GraphicsCreateFromHDC ($hDC)
    $hBrush = _GDIPlus_BrushCreateSolid (Random(0xff000000, 0xffffff00, 1)) 
   
     _GDIPlus_GraphicsFillRect ($hGraphic, 0, 0,150, 200, $hBrush)  ;this not moveable
    
      $hPen = _GDIPlus_PenCreate(0xFF000000, 5)
     _GDIPlus_GraphicsDrawRect ($hGraphic, 0, 0,150, 200,$hPen) ; Border is moveable

    _GDIPlus_GraphicsFillEllipse ($hGraphic, 0, 0, 10, 10, $hBrush)  ;this  is moveable
   
    $tSize = DllStructCreate($tagSIZE)
    $pSize = DllStructGetPtr($tSize)
    DllStructSetData($tSize, "X", $GuiSize)
    DllStructSetData($tSize, "Y", $GuiSize)
    $tSource = DllStructCreate($tagPOINT)
    $pSource = DllStructGetPtr($tSource)
    $tBlend = DllStructCreate($tagBLENDFUNCTION)
    $pBlend = DllStructGetPtr($tBlend)
    DllStructSetData($tBlend, "Alpha", $iOpacity)
    DllStructSetData($tBlend, "Format", 1)
    _WinAPI_UpdateLayeredWindow ($hGui, $hWnd, 0, $pSize, $hDC, $pSource, 0, $pBlend, $ULW_ALPHA)
    _GDIPlus_PenDispose ($hPen)
    _GDIPlus_BrushDispose ($hBrush)
    _GDIPlus_GraphicsDispose ($hGraphic)
    _WinAPI_ReleaseDC (0, $hWnd)
    _WinAPI_DeleteObject ($hBitmap)
    _WinAPI_DeleteDC ($hDC)
   
    Do
        Sleep(20)
    Until _IsPressed("1B")  ; ESC key
    DllClose($dll)
    _GDIPlus_Shutdown ()
EndFunc   ;==>Rectangles

#cs
    ; ============================================================================
    ; Handle the WM_NCHITTEST message so our window can be dragged
    ; ============================================================================
    Func WM_NCHITTEST($HWnd, $iMsg, $iwParam, $ilParam)
    if $HWnd = $hGui then Return $HTCAPTION
    EndFunc
#ce

; =================================================================
; Drag Window 3 of 3 addin
; =================================================================
Func _WinMove($hWnd, $Command, $wParam, $lParam)
    If BitAND(WinGetState($hWnd), 32) Then Return $GUI_RUNDEFMSG
    ;DllCall("user32.dll", "long", "SendMessage", "hwnd", $HWnd, "int", $WM_SYSCOMMAND, "int", 0xF009, "int", 0)
    DllCall("user32.dll", "int", "SendMessage", "hWnd", $hWnd, "int", $WM_NCLBUTTONDOWN, "int", $HTCAPTION, "int", 0)
EndFunc   ;==>_WinMove

[Gary]

Nothing wrong with the UDF function, it works. Layered you can't see the fill but it works.