Controls not showing on Alpha Blend window

[FireFox]

Hi,

I have created an Alpha's Blend window with the advanced example of AutoIt.

It works fine for the picture, but any control is visible

expandcollapse popup

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

Global Const $AC_SRC_ALPHA = 1
Global $hGUI1, $hGUI2, $iLabel1, $iLabel2, $iSlider, $hImage

; Create GUI
$hGUI1 = GUICreate("", 400, 100)
$iLabel1 = GUICtrlCreateLabel ("Adjust slider to change opacity level: (0-255)", 84, 10, 380, 20)
$iSlider = GUICtrlCreateSlider(10, 32, 380, 40)
$iLabel2 = GUICtrlCreateLabel ("Drag the layered window around your desktop"   , 80, 74, 380, 20)
GUICtrlSetLimit($iSlider, 255, 0)
GUICtrlSetData ($iSlider, 255)

GUISetState(@SW_SHOW, $hGUI1)

; Create layered child window
$hGUI2 = GUICreate("", 332, 180, -1, -1, -1, $WS_EX_LAYERED, $hGUI1)

; Load layered image
_GDIPlus_Startup( )
$hImage = _GDIPlus_ImageLoadFromFile(@ScriptDir & "\WLM.png")
SetBitMap($hGUI2, $hImage, 255)

GUICtrlCreateEdit('test', 0, 0, 332, 180)
GUICtrlSetFont(-1, 32)

GUISetState(@SW_SHOW, $hGUI2)

; Register notification messages
GUIRegisterMsg($WM_HSCROLL  , "WM_HSCROLL"  )
GUIRegisterMsg($WM_NCHITTEST, "WM_NCHITTEST")

; Loop until user exits
Do
    Sleep(50)
Until GUIGetMsg( ) = $GUI_EVENT_CLOSE

; Release resources
_GDIPlus_ImageDispose($hImage)
_GDIPlus_Shutdown( )

; ===============================================================================================================================
; Handle the WM_HSCROLL notificaton so that we can change the opacity in real time
; ===============================================================================================================================
Func WM_HSCROLL($hWnd, $iMsg, $iwParam, $ilParam)
  SetBitMap($hGUI2, $hImage, GUICtrlRead($iSlider))
EndFunc

; ===============================================================================================================================
; Handle the WM_NCHITTEST for the layered window so it can be dragged by clicking anywhere on the image.
; ===============================================================================================================================
Func WM_NCHITTEST($hWnd, $iMsg, $iwParam, $ilParam)
  If ($hWnd = $hGUI2) And ($iMsg = $WM_NCHITTEST) Then Return $HTCAPTION
EndFunc

; ===============================================================================================================================
; SetBitMap
; ===============================================================================================================================
Func SetBitmap($hGUI, $hImage, $iOpacity)
  Local $hScrDC, $hMemDC, $hBitmap, $hOld, $pSize, $tSize, $pSource, $tSource, $pBlend, $tBlend

  $hScrDC  = _WinAPI_GetDC(0)
  $hMemDC  = _WinAPI_CreateCompatibleDC($hScrDC)
  $hBitmap = _GDIPlus_BitmapCreateHBITMAPFromBitmap($hImage)
  $hOld    = _WinAPI_SelectObject($hMemDC, $hBitmap)
  $tSize   = DllStructCreate($tagSIZE)
  $pSize   = DllStructGetPtr($tSize  )
  DllStructSetData($tSize, "X", _GDIPlus_ImageGetWidth ($hImage))
  DllStructSetData($tSize, "Y", _GDIPlus_ImageGetHeight($hImage))
  $tSource = DllStructCreate($tagPOINT)
  $pSource = DllStructGetPtr($tSource)
  $tBlend  = DllStructCreate($tagBLENDFUNCTION)
  $pBlend  = DllStructGetPtr($tBlend)
  DllStructSetData($tBlend, "Alpha" , $iOpacity    )
  DllStructSetData($tBlend, "Format", $AC_SRC_ALPHA)
  _WinAPI_UpdateLayeredWindow($hGUI, $hScrDC, 0, $pSize, $hMemDC, $pSource, 0, $pBlend, $ULW_ALPHA)
  _WinAPI_ReleaseDC   (0, $hScrDC)
  _WinAPI_SelectObject($hMemDC, $hOld)
  _WinAPI_DeleteObject($hBitmap)
  _WinAPI_DeleteDC    ($hMemDC)
EndFunc

Don't forget to download the attached picture

Thanks for anyhelp !

Cheers, FireFox.

Edited September 5, 2009 by FireFox

[Yashied]

http://www.autoitscript.com/forum/index.php?showtopic=95043 + WinSetTrans() Edited September 5, 2009 by Yashied