Crate input_query 

input_query

A cross-platform Rust library for querying keyboard key states without requiring a window context.

This library provides a simple, unified API for checking if keyboard keys are currently pressed across Linux, Windows, and macOS platforms.

Platform Support

• Linux: Uses evdev to directly read input events from device files. Events are monitored in a background thread that polls every 5ms.
• Windows: Uses GetAsyncKeyState from the Win32 API. State is queried on-demand.
• macOS: Uses CGEventSourceKeyState from the Core Graphics framework. State is queried on-demand.

Usage

use input_query::{InputHandler, KeyCode};
use std::thread;
use std::time::Duration;

let handler = InputHandler::new();

loop {
    if handler.is_pressed(KeyCode::KeyEsc) {
        println!("Escape key is pressed!");
        break;
    }
     
    if handler.is_pressed(KeyCode::KeySpace) {
        println!("Space bar is pressed!");
    }
     
    thread::sleep(Duration::from_millis(10));
}

Note on Permissions

• Linux: Requires read access to /dev/input/event* devices. You may need to add your user to the input group or run with appropriate permissions.
• macOS: Requires accessibility permissions. The application may need to be granted “Input Monitoring” permission in System Preferences → Security & Privacy → Privacy.
• Windows: No special permissions required.

Re-exports

pub use input_handler::InputHandler;

pub use input_handler::KeyCode;

Modules

input_handler

Platform-specific input handler implementations and key code definitions.