Magnify

[JohnOne]

I have cause to use a screen magnifier, and remembered I'd seen and tried one

by Melba32 a while back. After a bit of a search I found it

But it does not seem to work anymore (it does not follow the mouse (at least on my machine)

Anyone have the time to test it?

Just want to confirm a problem with my end

win 7 32, AutoIt 3.3.8.0

[water]

It doesn't work here too. Windows 7 64 bit, tested with AutoIt 3.3.8.1 and 3.3.9.4.

I have two displays and the script seems to create a "window" in the upper left portion of display 1. But it doesn't follow the mouse.

[JohnOne]

Cheers, Same here.

Must need a bit of a tweak.

Changed the while loop.

While 1
    Sleep(10)
    $MousePos = MouseGetPos()

    ; Show the correct area
    Switch $iShow
        Case 1
            Magnify($MousePos)
            MouseCheck($MousePos)
        Case 2
            Magnify($aCoords_2)
            MouseCheck($aCoords_2)
    EndSwitch

WEnd

To get started but need s bit more messing with.

[JohnOne]

I've modified the script a little, to emulate my partial desired effect.

expandcollapse popup

#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>
#include <WinAPI.au3>

Opt("GUICloseOnESC", 0)

HotKeySet("{ESC}", "On_Exit")
HotKeySet("{PAUSE}", "On_Switch") ; to switch areas to be magnified

; Set coordinates for areas to magnify
Global $aCoords_1[2] = [750, 500], $aCoords_2[2] = [1000, 500]
; Set size of magnifier GUI
Global $iWidth = 200, $iHeight = 200
Global $hMag_Win, $hMagDC, $hDeskDC, $hPen, $oObj, $iShow = 1

; Create mouse GUI
$hMouse_GUI = GUICreate("Mouse", 5, 5, 0, 0, $WS_POPUP, $WS_EX_TOPMOST)
GUISetBkColor(0, $hMouse_GUI)
GUISetState(@SW_SHOW)

; Create Magnifier GUI
$hMag_GUI = GUICreate("Test", $iWidth, $iHeight, @DesktopWidth - $iWidth - 10, 10, $WS_POPUP, $WS_EX_TOPMOST)
GUISetState(@SW_SHOW)

; Get device context for Mag GUI
$hMagDC = _WinAPI_GetDC($hMag_GUI)
If @error Then Exit
; Get device context for desktop
$hDeskDC = _WinAPI_GetDC(0)
If @error Then
    _WinAPI_ReleaseDC($hMag_GUI, $hMagDC)
    Exit
EndIf

While 1
    Sleep(10)
    $MousePos = MouseGetPos()

    ; Show the correct area
    Switch $iShow
        Case 1
            Magnify($MousePos)
            MouseCheck($MousePos)
        Case 2
            Magnify($aCoords_2)
            MouseCheck($aCoords_2)
    EndSwitch

WEnd

; Move the mouse GUI to follow the real mouse
Func MouseCheck($aCoords)

    Local $aMousePos = MouseGetPos()
    If  $aMousePos[0] > $aCoords[0] And $aMousePos[0] < $aCoords[0] And _
        $aMousePos[1] > $aCoords[1] And $aMousePos[1] < $aCoords[1] Then

        Local $iX = $aMousePos[0] + 50;- $aCoords[0]) * 2
        Local $iY = $aMousePos[1] + 50;- $aCoords[1]) * 2
        WinMove($hMag_GUI, "", $iX, $iY)

    Else
        ; Hide mouse GUI if not required
        WinMove($hMouse_GUI, "", -20, -20)
    EndIf

EndFunc

Func On_Exit()

    ; Clear up
    _WinAPI_ReleaseDC(0, $hDeskDC)
    _WinAPI_ReleaseDC($hMag_GUI, $hMagDC)
    Exit

EndFunc   ;==>On_Exit

Func On_Switch()

    Switch $iShow
        Case 1
            $iShow = 2
        Case 2
            $iShow = 1
    EndSwitch

EndFunc

Func Magnify($aCoords)

    ; Fill Mag GUI with 2x expanded contents of desktop area as set in $aCoords
    DllCall("gdi32.dll", "int", "StretchBlt", _
        "int", $hMagDC,  "int", 0,                   "int", 0,   "int", $iWidth,     "int", $iHeight, _
        "int", $hDeskDC, "int", $aCoords[0] - 100, "int", $aCoords[1] - 100 , "int", $iWidth , "int", $iWidth , _
        "long", $SRCCOPY)

EndFunc   ;==>Magnify

Hope M23 does not mind.

Now the magnify window centre is the mouse position (not important for that window

to follow mouse really) Nor is the mouse Gui.

What I'm after now id for the magnification to include everything on the screen,

including the mouse.

I'm a GDi noob, and I'm still looking but if anyone has an answer I'd love to see it.

EDIT:

No solution as yet, but need to clarify what I need after looking in screencapture

udf to see how it does and does not capture the mouse.

It seems to be about _WinAPI_CopyIcon, _WinAPI_GetIconInfo and _WinAPI_DrawIcon

which is not what I need.

I am drawing lines on the screen (_GDIPlus_PenCreate and _GDIPlus_GraphicsDrawRect)

and it's these lines and the mouse I need to see in magnified window, so everything on the screen really.

EDIT2:

Seems that the cursor in the likes of notepad and scite are magnified

but not the mouse, I'm wondering id the mouse is outside of the desktop

device context.

EDIT3:

Tried using _WinAPI_GetDCEx, with flag set to $DCX_LOCKWINDOWUPDATE (0x00000400)

"Allows drawing even if there is a LockWindowUpdate call in effect that would otherwise exclude this window. Used for drawing during tracking"

No luck.

Funilly enough, I can see area selection tools in the magnify window using paint

or drawing a rectangle in paint.

Edited November 27, 2012 by JohnOne

[BrewManNH]

Have you tried the built-in magnifier in Win7?

[JohnOne]

I had not, thanks for the tip, but unfortunately it's a bit crap.

I'm looking for pixel perfect, but windows magnifier seems to be

like some old fuzzy jpeg picture.

Although it does show the mouse and drawn lines.

Edited November 27, 2012 by JohnOne