PixelSearch not looking at loaded file image

[Yirrlaar]

Can someone please tell me what is wrong this is code and WHY it's not looking a a VERY simple png file that has 3 colours ... RED 0xFF0000 @ 0x0 ... Blue 0x00FF00 @ 0x1 ... Green 0x0000FF @ 0x2

#include <GDIPlus.au3>

;Details of the image we are about to search
$imageFile = "C:\Test.png"

_GDIPlus_Startup()
$iTolerance=10

$hImage = _GDIPlus_ImageLoadFromFile($imageFile)
$hBitmap = _GDIPlus_BitmapCreateHBITMAPFromBitmap($hImage)
$width = _GDIPlus_ImageGetWidth($hBitmap)
$height = _GDIPlus_ImageGetHeight($hBitmap)

$array=PixelSearch(0,0,$width-1,$height-1,0xFF0000,$iTolerance,1,$hBitmap)
If @error Then
    MsgBox(0,"","Not found")
Else
    MsgBox(0,"",$array[0]&","&$array[1])
EndIf

_GDIPlus_ImageDispose ($hImage)
_WinAPI_DeleteObject ($hBitmap)
_GDIPlus_Shutdown()

it always returns "Not Found" or just crashes out right

[BrewManNH]

You're supplying the function with a GDI+ image handle, when you need to supply it with a window handle. I'm not sure it will work without an actual image to look at.