PixelSearch in background EXAMPLE

#include <GDIPlus.au3>

$width = 800
$height = 600
#NoTrayIcon
$GUI = GUICreate("Game gui",$width,$height)
GUISetState()

_GDIPlus_Startup()
$hGraphic = _GDIPlus_GraphicsCreateFromHWND($GUI)
$hBitmap = _GDIPlus_BitmapCreateFromGraphics($width,$height,$hGraphic)
$hBackbuffer = _GDIPlus_ImageGetGraphicsContext($hBitmap)

$hBrush1 = _GDIPlus_BrushCreateSolid(0xFFFF0000)
$hBrush2 = _GDIPlus_BrushCreateSolid(0xFF00FF00)

Global $objectX = 0,$objectW  = 50

While Sleep(5)
update()
draw()
if GUIGetMsg() = -3 Then ExitLoop
WEnd

Func draw()
_GDIPlus_GraphicsClear($hBackbuffer)
_GDIPlus_GraphicsFillRect($hBackbuffer,0,$height/2,$width,$height/2,$hBrush2)
_GDIPlus_GraphicsFillEllipse($hBackbuffer,$objectX,$height/2,$objectW,$objectW,$hBrush1)
_GDIPlus_GraphicsDrawImage($hGraphic,$hBitmap,0,0)


EndFunc

Func update()
$objectX+=10
If $objectX + $objectW >= $width Then $objectX = 0
EndFunc

#include <GDIPlus.au3>
#include <ScreenCapture.au3>

Func CaptureWindowMinimized($hwnd)
Local $winData = WinGetPos($hwnd)
WinMove($hwnd,"",0,0)
WinSetOnTop($hwnd,"",1)
$HBMP = _ScreenCapture_CaptureWnd("",$hwnd,0,0,$winData[2],$winData[3],False) ;capture
WinMove($hwnd,"",@DesktopWidth-100,@DesktopHeight)
WinSetOnTop($hwnd,"",0)
$bmp = _GDIPlus_BitmapCreateFromHBITMAP($HBMP); we need the bitmap to get pixel colors
Return $bmp
EndFunc

$GUI = GUICreate("caca",800,600)
GUISetState()
_GDIPlus_Startup()

$hGraphic = _GDIPlus_GraphicsCreateFromHWND($GUI)
$hBitmap  = _GDIPlus_BitmapCreateFromGraphics(800,600,$hGraphic)
$hBackBuffer = _GDIPlus_ImageGetGraphicsContext($hBitmap)

HotKeySet("{F1}","capture")

While Sleep(5)
if GUIGetMsg() = -3 Then ExitLoop
WEnd

Func capture()
$hwnd = WinGetHandle("Game gui")
$image = CaptureWindowMinimized($hwnd)
_GDIPlus_GraphicsClear($hBackBuffer)
_GDIPlus_GraphicsDrawImage($hBackBuffer,$image,0,0)
_GDIPlus_GraphicsDrawImage($hGraphic,$hBitmap,0,0)
MsgBox(0,"",searchImage($image,4294901760,1,300))
EndFunc

Func searchImage($image,$color,$xo=1,$yo=1)
$imgW = _GDIPlus_ImageGetWidth($image)
$imgH = _GDIPlus_ImageGetHeight($image)
$currentColor = -1
For $x = $xo To $imgW
For $y = $yo To $imgH
$currentColor = _GDIPlus_BitmapGetPixel($image,$x,$y)

If $currentColor = $color Then Return $x&","&$y
Next
Next
EndFunc