GDI slideshow

[iamtheky 585]

What is the proper method to prevent the GUI from clearing the last image while the next is being drawn. The behavior is only intermittent (more often it seems with the DrawImageRectRect), and i want to guess buffering, but my GDI skills are teh suck. In the beginning stages so all suggestions are welcome, thanks.

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


$pic1 = "C:\green.jpg"
$pic2 = "C:\space.jpg"
$pic3 = "c:\preupdating.bmp"
$pic4 = "c:\weep.jpg"
$pic5 = "C:\chokes.jpg"


_GDIPlus_Startup()
Local $hGUI = GUICreate("Test", @DesktopWidth , @DesktopHeight, 0 , 0 ,$WS_POPUPWINDOW)
Local $hGraphics = _GDIPlus_GraphicsCreateFromHWND($hGUI)

GUISetState()


Local $hBmp = _GDIPlus_BitmapCreateFromGraphics(@DesktopWidth , @DesktopHeight, $hGraphics)
Local $hBmpGraphics = _GDIPlus_ImageGetGraphicsContext($hBmp)

$hgreen = _GDIPlus_ImageLoadFromFile($pic1)
_GDIPlus_GraphicsDrawImageRECT($hBmpGraphics, $hgreen, 0 , 0 , @DesktopWidth , @DesktopHeight)
_GDIPlus_GraphicsDrawImage($hGraphics, $hBmp, 0, 0)

sleep (2000)

;~ ;;;;;;;;;;;;;;;;;;;;;;;;;;

$hspace = _GDIPlus_ImageLoadFromFile($pic2)
_GDIPlus_GraphicsDrawImageRECT($hBmpGraphics, $hspace, 0 , 0 , @DesktopWidth , @DesktopHeight)

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;


for $i = @DesktopWidth to 0 step -1

_GDIPlus_GraphicsDrawImage($hGraphics, $hBmp, $i, 0)

next

sleep (2000)

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
$hupdating = _GDIPlus_ImageLoadFromFile($pic3)
_GDIPlus_GraphicsDrawImageRECT($hBmpGraphics, $hupdating, 0 , 0 , @DesktopWidth , @DesktopHeight)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;



for $i = @DesktopHeight to 0 step -1

_GDIPlus_GraphicsDrawImage($hGraphics, $hBmp, 0, $i)

next

sleep (2000)


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
$hweep = _GDIPlus_ImageLoadFromFile($pic4)
_GDIPlus_GraphicsDrawImageRECT($hBmpGraphics, $hweep, 0 , 0 , @DesktopWidth , @DesktopHeight)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;



for $i = @DesktopWidth to 0 step -1

_GDIPlus_GraphicsDrawImageRectRect ($hGraphics, $hBmp, 0 , 0 , @DesktopWidth , @DesktopHeight , 0 , 0 , @DesktopWidth - $i , @DesktopHeight)
next

sleep (2000)

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
$hchoke = _GDIPlus_ImageLoadFromFile($pic5)
_GDIPlus_GraphicsDrawImageRECT($hBmpGraphics, $hchoke, 0 , 0 , @DesktopWidth , @DesktopHeight)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;



for $i = @DesktopHeight to 0 step -1

_GDIPlus_GraphicsDrawImageRectRect ($hGraphics, $hBmp, 0 , 0 , @DesktopWidth , @DesktopHeight , 0 , 0 , @DesktopWidth , @DesktopHeight - $i)
next

sleep (2000)


;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;


_GDIPlus_GraphicsDispose($hBmpGraphics)
_GDIPlus_BitmapDispose($hBmp)
_GDIPlus_GraphicsDispose($hGraphics)
GUIDelete()
_GDIPlus_Shutdown()

[UEZ 972]

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