Dynamic MacroBoard (SendInput)

Dynamic MacroBoard is a Windows-only macro keyboard built in Go using Ebiten for the graphical interface and the Windows API (SendInput) for simulating global Unicode key presses.
With this tool, you can configure keys that—when clicked—simulate key events even if the Ebiten window is unfocused! 🎯

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✨ Features

✅ Graphical Macro Keyboard 🎨
A simple UI built with Ebiten that displays clickable keys.

✅ Global Key Emulation 🌍
Uses the Windows API SendInput function to simulate Unicode key events so that key presses are sent to the active window (for example, a browser).

✅ Dynamic Key Configuration 🔧
Supports dynamically mapping key labels to Unicode events. You can extend this to load key mappings from a configuration file.

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🛠️ Requirements

• 🖥️ Operating System:
  Windows 64-bit (this project uses Windows-specific API calls).

• 🐹 Go:
  Go 1.16+ is recommended.

• 📦 Dependencies:

  • 🎮 Ebiten (Game Library)
  • 📄 YamlV3 (Config Parsing)

  No external packages are required for key simulation since we use syscall and unsafe to call the Windows API directly.

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🛠️ How It Works

• 🎹 SendInput Integration:
  The project calls the Windows API function SendInput to simulate key events. The code defines custom INPUT and KEYBDINPUT structures with padding (to ensure correct size on 64-bit systems) and determines the structure size based on the target architecture.

• 🖼️ Ebiten UI:
  Ebiten is used to create a window with clickable buttons. Each button represents a macro key, and clicking one triggers its associated handler.

• ⚡ Dynamic Key Handling:
  The handler (EmulateKeyHandler) loops through each rune in the key’s label and sends it using the sendUnicodeChar function.