DetectPixelChange (AutoHotkey v2)

A pixel monitoring and screen masking tool written in AutoHotkey v2. This script continuously tracks the color of a screen pixel and logs every change with a timestamp. It also visually highlights the pixel using a movable and color-changing 10×10 bounding box with a visible border. It uses the native PixelGetColor() function from AHK v2.

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✨ Features

• Monitors a specific screen pixel (x, y) at a configurable interval
• Records timestamped color changes to a ListView
• Visually masks a 20×20 square area around the pixel with the center exposed
• Box is draggable via mouse (even though it's composed of 4 transparent GUIs)
• Color history (with timestamps!) can be viewed in a GUI with copyable values
• Double-click any row to copy the hex color to clipboard

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📦 Usage

1. Install AutoHotkey v2

2. Modify the initial coordinates in the script if needed:

   x := 100
   y := 200

   You can also do:

   px := DetectPixelChange(100, 200) ; x = 100, y = 200
   

3. To start, do .start()

4. To stop, do .stop()

5. To adjust the pixel manually by mouse, do .boxCoord()

Example:

#Requires AutoHotkey v2
#SingleInstance Force

#include DetectPixelChange.ahk  ; path to the library

; manually define coordinates 
x := 100
y := 200

; start the class. Note, you can also skip the X/Y declaration above, and just do: 
; px := DetectPixelChange(100, 200)
px := DetectPixelChange(x,y)

; use the .Start() method with the class to start recording
F1::px.start()

; use the .Stop() to stop recording
f2::px.stop()

; Displays a moveable bounding box for the coordinate location specified.
F3::px.boxCoord()

; Press F12 to exit 
*F12::ExitApp