/dəˈrɛkt-ˈɪnˌpʊt/

n. “A Microsoft API within DirectX for handling input from keyboards, mice, game controllers, and other devices on Windows systems.”

DirectInput is a component of DirectX that provides low-level access to input devices, enabling developers to capture and process user input efficiently. It is commonly used in games and interactive applications where precise input handling, low latency, and support for multiple simultaneous devices are essential.

Key characteristics of DirectInput include:

  • Low-Latency Input: Captures device input quickly, minimizing delay between user action and response.
  • Multiple Device Support: Handles keyboards, mice, joysticks, gamepads, and other controllers.
  • Force Feedback: Provides vibration and haptic feedback for supported devices.
  • Integration with DirectX: Works seamlessly with Direct3D, Direct2D, and other multimedia components.
  • Device Enumeration: Detects connected devices and allows querying of their capabilities.

Conceptual example of DirectInput usage:

// Capturing game controller input
Initialize DirectInput interface
Enumerate connected controllers
Acquire input from selected device
Read input state each frame
Process input in game logic

Conceptually, DirectInput acts like a translator between the hardware input devices and your application, ensuring fast, accurate, and responsive control in games and interactive software.

Framework
Input
Microsoft