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Is there any way to use something like PixelSearch reading from memory?

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Hello, all. I were trying to use search, but i couldnt find what i want. I am planning to load image data using GDI+ functions, so it could be faster to work with data, but problem is that i need something like PixelSearch, so i could look for some colors in region. I know that its possible to get color from memory, but is it possible to get color and then use pixel search without displaying image on screen. Thanks for you answers in advance.

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First, welcome to the AutoIt forum. :)

I would recommend learning to use the Search facility as there is a pretty good chance your question, or something like it, will have been asked before. Try using the advanced options to really pinpoint a subject.

A quick search found this UDF from Manadar which might help. Or there is this code which I developed from some of Malkey's GDI work - the Image_Invert function shows how to manipulate the individual bits in memory.

#include <GuiConstantsEx.au3>
#include <WindowsConstants.au3>
#include <GDIPlus.au3>
#include <WinAPI.au3>
#Include <Color.au3>
#Include <ScreenCapture.au3>
#Include <Misc.au3>

; Credit: Malkey for the basic GDI code

Global $iTolerance = 30, $iX1, $iY1, $iX2, $iY2, $fType = ""

; Create GUI
$hMain_GUI = GUICreate("Invert BMP", 240, 150)

$hLabel_1 = GUICtrlCreateLabel("First mark the area to invert or select a BMP", 10, 10, 260, 20)

$hRect_Button   = GUICtrlCreateButton("Mark Area",   10, 40, 80, 30)
$hChoose_Button = GUICtrlCreateButton("Choose BMP", 150, 40, 80, 30)

$hLabel_2 = GUICtrlCreateLabel("", 160, 90, 70, 20)

$hAction_Button = GUICtrlCreateButton("Invert",   150,  110, 80, 30)
GUICtrlSetState(-1, $GUI_DISABLE)
$hCancel_Button = GUICtrlCreateButton("Cancel",   10, 110, 80, 30)


While 1

    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE, $hCancel_Button
        Case $hRect_Button
            GUISetState(@SW_HIDE, $hMain_GUI)
            GUISetState(@SW_SHOW, $hMain_GUI)
            GUICtrlSetState($hAction_Button, $GUI_ENABLE)
            GUICtrlSetData($hLabel_1, "")
            GUICtrlSetData($hLabel_2, "Now Invert!")
            $fType = "Rect"
        Case $hChoose_Button
            $sBMP_Path = FileOpenDialog("Select BMP to invert", "C:\", "Bitmaps (*.bmp)", 2)
            If @error Then
                MsgBox(64, "Info", "No BMP selected")
                GUICtrlSetState($hAction_Button, $GUI_ENABLE)
                GUICtrlSetData($hLabel_1, "")
                GUICtrlSetData($hLabel_2, "Now Invert!")
                $fType = "File"
        Case $hAction_Button


; Capture selected area if needed
If $fType = "Rect" Then
    $sBMP_Path = @ScriptDir & "\TestNormal.bmp"
    GUISetState(@SW_HIDE, $hMain_GUI)
    _ScreenCapture_Capture($sBMP_Path, $iX1, $iY1, $iX2, $iY2, False)

; Load original image
$hImage = _GDIPlus_ImageLoadFromFile($sBMP_Path)
If @error Then
    MsgBox(16, "Error", "Could not load BMP file")

Global $GuiSizeX = _GDIPlus_ImageGetWidth($hImage)
Global $GuiSizeY = _GDIPlus_ImageGetHeight($hImage)

; Display original image
$hBitmap_GUI = GUICreate("Original Bitmap", $GuiSizeX, $GuiSizeY, 100, 100)

; Create Double Buffer, so the doesn't need to be repainted on PAINT-Event
$hGraphicGUI = _GDIPlus_GraphicsCreateFromHWND($hBitmap_GUI)
$hBMPBuff = _GDIPlus_BitmapCreateFromGraphics($GuiSizeX, $GuiSizeY, $hGraphicGUI)
$hGraphic = _GDIPlus_ImageGetGraphicsContext($hBMPBuff)

_GDIPlus_GraphicsDrawImageRect($hGraphic, $hImage, 0, 0, $GuiSizeX, $GuiSizeY)

GUIRegisterMsg(0xF, "MY_PAINT")
GUIRegisterMsg(0x85, "MY_PAINT")
_GDIPlus_GraphicsDrawImage($hGraphicGUI, $hBMPBuff, 0, 0)

; Invert the image
Local $hBitmap = Image_Invert($hBMPBuff, 0, 0, $GuiSizeX, $GuiSizeY)
If _GDIPlus_ImageSaveToFile($hBitmap, @ScriptDir & "\TestInverted.bmp") =  False Then MsgBox(16 , "Error", "Inverted image not created")


; Display inverted image
$hInverted_GUI = GUICreate("Inverted Image", $GuiSizeX, $GuiSizeY, 500, 200)
$hPic = GUICtrlCreatePic(@ScriptDir & "\TestInverted.bmp", 0, 0, $GuiSizeX, $GuiSizeY)

While 1
    If GUIGetMsg() = $GUI_EVENT_CLOSE Then

; -------------

;Func to redraw on PAINT MSG
Func MY_PAINT($hWnd, $msg, $wParam, $lParam)

   ; Check, if the GUI with the Graphic should be repainted
   ; The sequencial order of these two commands is important.
    _GDIPlus_GraphicsDrawImage($hGraphicGUI, $hBMPBuff, 0, 0)

EndFunc  ;==>MY_PAINT

; -------------

Func Image_Invert($hImage2, $iStartPosX = 0, $iStartPosY = 0, $GuiSizeX = Default, $GuiSizeY = Default)

    Local $hBitmap1, $Reslt, $width, $height, $stride, $format, $Scan0, $v_Buffer, $v_Value, $iIW, $iIH
    $iIW = _GDIPlus_ImageGetWidth($hImage2)
    $iIH = _GDIPlus_ImageGetHeight($hImage2)
    If $GuiSizeX = Default Or $GuiSizeX > $iIW - $iStartPosX Then $GuiSizeX = $iIW - $iStartPosX
    If $GuiSizeY = Default Or $GuiSizeY > $iIH - $iStartPosY Then $GuiSizeY = $iIH - $iStartPosY
    $hBitmap1 = _GDIPlus_BitmapCloneArea($hImage2, $iStartPosX, $iStartPosY, $GuiSizeX, $GuiSizeY, $GDIP_PXF32ARGB)

    ProgressOn("Inverting Image", "The image is being processed.", "0 percent", -1, -1, 16)

    $Reslt = _GDIPlus_BitmapLockBits($hBitmap1, 0, 0, $GuiSizeX, $GuiSizeY, BitOR($GDIP_ILMREAD, $GDIP_ILMWRITE), $GDIP_PXF32ARGB)

   ;Get the returned values of _GDIPlus_BitmapLockBits ()
    $width = DllStructGetData($Reslt, "width")
    $height = DllStructGetData($Reslt, "height")
    $stride = DllStructGetData($Reslt, "stride")
    $format = DllStructGetData($Reslt, "format")
    $Scan0 = DllStructGetData($Reslt, "Scan0")
    For $i = 0 To $GuiSizeX - 1
        For $j = 0 To $GuiSizeY - 1
            $v_Buffer = DllStructCreate("dword", $Scan0 + ($j * $stride) + ($i * 4))
        ; Get colour value of pixel
            $v_Value = DllStructGetData($v_Buffer, 1)
        ; Invert
            If (Abs(_ColorGetBlue ($v_Value) - 0x80) <= $iTolerance And _ ; Blue
                Abs(_ColorGetGreen($v_Value) - 0x80) <= $iTolerance And _ ; Green
                Abs(_ColorGetRed  ($v_Value) - 0x80) <= $iTolerance) Then ; Red
                DllStructSetData($v_Buffer, 1, BitAND((0x7F7F7F + $v_Value) , 0xFFFFFF))
                DllStructSetData($v_Buffer, 1, BitXOR($v_Value ,0xFFFFFF))
        ProgressSet(Int(100 * $i / ($GuiSizeX)), Int(100 * $i / ($GuiSizeX)) & " percent")
    _GDIPlus_BitmapUnlockBits($hBitmap1, $Reslt)

    Return $hBitmap1

EndFunc  ;==>Image_Invert

; -------------

Func Mark_Rect()

    Local $aMouse_Pos, $aMask, $aM_Mask, $iTemp
    Local $UserDLL = DllOpen("user32.dll")

; Wait until mouse button pressed
    While Not _IsPressed("01", $UserDLL)

; Get first mouse position
    $aMouse_Pos = MouseGetPos()
    $iX1 = $aMouse_Pos[0]
    $iY1 = $aMouse_Pos[1]

    Global $hRectangle_GUI = GUICreate("", @DesktopWidth, @DesktopHeight, 0, 0, $WS_POPUP, $WS_EX_TOOLWINDOW + $WS_EX_TOPMOST)

; Draw rectangle while mouse button pressed
    While _IsPressed("01", $UserDLL)

        $aMouse_Pos = MouseGetPos()

        $aM_Mask = DllCall("gdi32.dll", "long", "CreateRectRgn", "long", 0, "long", 0, "long", 0, "long", 0)
    ; Bottom of rectangle
        $aMask = DllCall("gdi32.dll", "long", "CreateRectRgn", "long", $iX1, "long", $aMouse_Pos[1], "long", $aMouse_Pos[0], "long", $aMouse_Pos[1] + 1)
        DllCall("gdi32.dll", "long", "CombineRgn", "long", $aM_Mask[0], "long", $aMask[0], "long", $aM_Mask[0], "int", 2)
    ; Left of rectangle
        $aMask = DllCall("gdi32.dll", "long", "CreateRectRgn", "long", $iX1, "long", $iY1, "long", $iX1 + 1, "long", $aMouse_Pos[1])
        DllCall("gdi32.dll", "long", "CombineRgn", "long", $aM_Mask[0], "long", $aMask[0], "long", $aM_Mask[0], "int", 2)
    ; Top of rectangle
        $aMask = DllCall("gdi32.dll", "long", "CreateRectRgn", "long", $iX1 + 1, "long", $iY1 + 1, "long", $aMouse_Pos[0], "long", $iY1)
        DllCall("gdi32.dll", "long", "CombineRgn", "long", $aM_Mask[0], "long", $aMask[0], "long", $aM_Mask[0], "int", 2)
    ; Right of rectangle
        $aMask = DllCall("gdi32.dll", "long", "CreateRectRgn", "long", $aMouse_Pos[0], "long", $iY1, "long", $aMouse_Pos[0] + 1, "long", $aMouse_Pos[1])
        DllCall("gdi32.dll", "long", "CombineRgn", "long", $aM_Mask[0], "long", $aMask[0], "long", $aM_Mask[0], "int", 2)
        DllCall("user32.dll", "long", "SetWindowRgn", "hwnd", $hRectangle_GUI, "long", $aM_Mask[0], "int", 1)



; Get second mouse position
    $iX2 = $aMouse_Pos[0]
    $iY2 = $aMouse_Pos[1]

; Set in correct order if required
    If $iX2 < $iX1 Then
        $iTemp = $iX1
        $iX1 = $iX2
        $iX2 = $iTemp
    If $iY2 < $iY1 Then
        $iTemp = $iY1
        $iY1 = $iY2
        $iY2 = $iTemp


EndFunc  ;==>Mark_Rect

Perhaps a combination of the 2 might get you close to what you want. ;)


Edit: Clarity

Edited by Melba23

Public_Domain.png.2d871819fcb9957cf44f4514551a2935.png Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind

Open spoiler to see my UDFs:


ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area


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Yes you are right, it may get 1 by 1 pixel, but problem is, that it doesnt work as PixelSearch. You may get 1 pixel, then other and compire them, but thats mean i would need to write new function which could do it. I am trying to find out, does it have something same as PixelSearch, which could automaticaly check from the top left to buttom right corners and tell me is there color which i asked.

I would like that it work something like that:



_Found = _MemoryPixelSearch(left,top,right,buttom,color)

If _Found = True Then



$count = $count + 1


I marked the area, which i would like to know :)

Thanks for trying help me.

Edited by Makaule

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