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Make pixelgetcolor work with any DPI


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Hello Autoit! :bye:

Today i discovered that pixelgetcolor doesn't adapt to the DPI of the system, and i want to fix this somehow as my laptop uses 120 DPI.

This is what i have came up with so far:

AutoItSetOption ( "CaretCoordMode" , 0)
AutoItSetOption ( "MouseCoordMode" , 0)
AutoItSetOption ( "PixelCoordMode" , 0)
AutoItSetOption ( "GUICoordMode" , 0)
#include <MsgBoxConstants.au3>
#include <Misc.au3>
#include <WinAPIGdi.au3>


Global Const $MDT_EFFECTIVE_DPI = 0
Global Const $MDT_ANGULAR_DPI = 1
Global Const $MDT_RAW_DPI = 2

Func Terminate()

$iPD = 1
while 1

$aPos = WinGetPos("[ACTIVE]")
ToolTip (PixelGetColor( MouseGetPos()[0]*(96/_DPI(0)), MouseGetPos()[1]*(96/_DPI(1))) & ', ' & MouseGetPos()[0] & ', ' & MouseGetPos()[1] )
if $iPD = 1 and Not _IsPressed(22) Then
   $iPD = 0
if $iPD = 0 And _IsPressed(22) Then ;Page down is pressed
   ClipPut( 'PixelGetColor($aPos[2]' & '*' & MouseGetPos(0)/$aPos[2] & ',' & '$aPos[3]' & '*' & MouseGetPos(1)/$aPos[3] & ')' & '=' & PixelGetColor( MouseGetPos()[0], MouseGetPos()[1]))
   $iPD = 1


Func _DPI($iCordinate) ;0 for x and 1 for y
   $aMonitors = _WinAPI_EnumDisplayMonitors()
   $aDPI = _WinAPI_GetDpiForMonitor($aMonitors[1][0], $MDT_DEFAULT)
   Return $aDPI[$iCordinate]

Func _WinAPI_SetProcessDpiAwareness($DPIAware)
  DllCall("Shcore.dll", "long", "SetProcessDpiAwareness", "int", $DPIAware)
  If @error Then Return SetError(1, 0, 0)

Func _WinAPI_GetDpiForMonitor($hMonitor, $dpiType)
  Local $X, $Y
  $aRet = DllCall("Shcore.dll", "long", "GetDpiForMonitor", "long", $hMonitor, "int", $dpiType, "uint*", $X, "uint*", $Y)
  If @error Or Not IsArray($aRet) Then Return SetError(1, 0, 0)
  Local $aDPI[2] = [$aRet[3],$aRet[4]]
  Return $aDPI


I'm pretty sure it has to do with me using the DPI in the wrong way as i dont really understand it (even after searching around on the internet for like an hour)

It would really help if anyone could help me on the right track :P

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I'm going to ask the obvious question - why do you have to do a pixel color search? Why can't you just hook into the control you need directly? The problem you are having is one of the many reasons why pixel searching is just plain bad coding.

Even better - what is the name of the application? Most likely we already have a solution coded for you and will save you loads of trouble. For example if you are working in a web interface use this: https://www.autoitscript.com/forum/topic/153520-iuiautomation-ms-framework-automate-chrome-ff-ie/


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Did you try to check maginfication and recalculate coordinates ?

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  • Developers
1 hour ago, Pricehacker said:

Thank you Bert from the muppets, but I am having a competition with my group of friends where we try to make the most efficient cookie clicker script. As far as i am concerned pixelgetcolor is the only command that would help me to win. :P

funny .... and locked. You better read those forum rules before you post next!


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