Как сделать аналог PixelSearch через WinAPI?

Local $hWnd = WinGetHandle($Login)
Local $Size = WinGetClientSize($hWnd)
Local $hDC = _WinAPI_GetDC($hWnd)
Local $hMemDC = _WinAPI_CreateCompatibleDC($hDC)
Local $hBitmap = _WinAPI_CreateCompatibleBitmap($hDC, $Size[0], $Size[1])
Local $hSv = _WinAPI_SelectObject($hMemDC, $hBitmap)
_WinAPI_BitBlt($hMemDC, 0, 0, $Size[0], $Size[1], $hDC, 0, 0, $SRCCOPY)
_WinAPI_SelectObject($hMemDC, $hSv)
_WinAPI_DeleteDC($hMemDC)
_WinAPI_ReleaseDC($hWnd, $hDC)
_ScreenCapture_SaveImage (@MyDocumentsDir & "\GDIPlus_Image.bmp", $hBitmap)
_WinAPI_DeleteObject($hBitmap)
_WinAPI_DeleteObject($hMemDC)

For $i = 0 To $i_Height - 1
        For $j = 0 To $i_Width - 1
            $i_Index += 1
            If BitAND(DllStructGetData($t_Bits, 1, $i_Index), 0x00FFFFFF) = $i_Color Then
                $a_Pixels[0][0] += 1
                $a_Pixels[$a_Pixels[0][0]][0] = $j + $i_X
                $a_Pixels[$a_Pixels[0][0]][1] = $i + $i_Y
                If $f_FirstOnly Then ExitLoop 2
            EndIf
        Next
Next