Jan 01, 2026

Game Overlay Plugin

Windows API C++ Game Development Overlay

A Windows plugin that creates a transparent, click-through overlay for games - perfect for streamers who want to display information without obstructing gameplay.

Features

  • Transparent Overlay: Renders data separately from the main game window using Windows API
  • Click-Through: Users can interact with the game while the overlay is visible
  • Minimal Performance Impact: Efficient rendering that doesn’t affect game performance
  • Customizable Display: Streamers can configure what information to show

Technical Implementation

  • Windows API: Used layered windows and transparency APIs
  • Process Injection: Hooked into game process to capture data
  • Rendering: Separate render thread for overlay graphics
  • Performance: Optimized to minimize CPU/GPU overhead

Benefits

  • Improved viewing experience for stream audiences
  • Reduced visual clutter on the main game screen
  • Enhanced clarity for competitive gaming scenarios
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