explaingit

highdelay/activate-watermark

Analysis updated 2026-05-18

★ 15C++Audience · generalComplexity · 2/5LicenseSetup · moderate

TLDR

A Windows desktop prank app that overlays a fake Activate Windows watermark on your screen without changing anything real.

Mindmap

mindmap
  root((repo))
    What it does
      Fake activation watermark
      Visual prank only
    Tech stack
      C++
      Win32 API
    Use cases
      Prank friends
      Screen share joke
    Audience
      Windows users

Code map

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What do people build with it?

USE CASE 1

Display a fake Activate Windows watermark to prank a friend or during a screen share.

USE CASE 2

Customize the watermark position, opacity, size, and text through the system tray menu.

USE CASE 3

Toggle the overlay on or off without leaving any taskbar icon.

What is it built with?

C++Win32 API

How does it compare?

highdelay/activate-watermarkpaullagier/pala-one-firmwaresternxd/dusklight-uwp
Stars151515
LanguageC++C++C++
Setup difficultymoderatehard—
Complexity2/54/54/5
Audiencegeneraldevelopergeneral

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · moderate Time to first run · 1h+

Building from source requires Microsoft Visual Studio.

Released into the public domain: free to use, modify, and share with no restrictions.

In plain English

Activate Watermark is a small Windows desktop application that adds a fake "Activate Windows" watermark to your screen, the same floating text that appears in the bottom-right corner of genuine unactivated Windows installations. The program does nothing to your actual Windows activation status, it is purely a visual prank. The watermark sits permanently on top of everything else on your screen, lets mouse clicks pass through it so it does not interfere with normal use, and leaves no icon in the taskbar. A right-click menu in the system tray (the small icon area in the bottom-right corner of the Windows taskbar) lets you adjust several settings: move the watermark to any corner of the screen, change its opacity from mostly transparent to fully visible, resize the text from small to extra large, and edit both lines of text to display anything you want instead of the default "Activate Windows" message. Exiting through the tray menu or Task Manager removes it. The README describes use cases as pranking friends, looking unserious during screen shares, or general amusement. The program is built as a single executable using C++ and the Win32 API (the programming interface for building native Windows applications). Building it requires Microsoft Visual Studio. It is released to the public domain.

Copy-paste prompts

Prompt 1
Show me how to build Activate Watermark from source using Visual Studio.
Prompt 2
Explain how to change the watermark's text and position from the tray menu.
Prompt 3
How does this program simulate the Activate Windows message without touching real activation?
Prompt 4
Walk me through exiting or removing the watermark overlay.

Frequently asked questions

What is activate-watermark?

A Windows desktop prank app that overlays a fake Activate Windows watermark on your screen without changing anything real.

What language is activate-watermark written in?

Mainly C++. The stack also includes C++, Win32 API.

What license does activate-watermark use?

Released into the public domain: free to use, modify, and share with no restrictions.

How hard is activate-watermark to set up?

Setup difficulty is rated moderate, with roughly 1h+ to a first successful run.

Who is activate-watermark for?

Mainly general.

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