X11 key release order problems

[RastislavKish]

I'm not sure if this is problem of this crate or X11, but it seems the order in which keys of a shortcut are released does matter right now. Here is a simple snippet detecting Alt+C hotkey and printing when it's pressed and released.

Reproduction steps

1. Run the code snippet below
2. Press the following key sequences:

• Alt down, C down, C up, Alt up
• Alt down, C down, Alt up, C up
• Alt down, C down, Alt up, C up
• Alt down, C down, C up, Alt up

Expected output

Pressed
Released
Pressed
Released
Pressed
Released
Pressed
Released

Actual output

Pressed
Released
Pressed
Released

There are basically two problems here, pressing sequence 2 prints "Pressed" but not "Released", repeating the same sequence (sequence 3) won't do anything (because the internal hotkey state is likely stuck), and sequence 4 won't produce the pressed event but only the released event.

Code snippet

use global_hotkey::{
    GlobalHotKeyManager, GlobalHotKeyEvent,
    hotkey::{HotKey, Modifiers, Code}
    };

fn main() {
    let manager=GlobalHotKeyManager::new().unwrap();
    let hotkey=HotKey::new(Some(Modifiers::ALT), Code::KeyC, );
    manager.register(hotkey).unwrap();

    for event in GlobalHotKeyEvent::receiver() {
        println!("{:?}", event.state());
        }
    }

Environment

global-hotkey 0.4.0, Ubuntu Mate 22.04 64-bit

[amrbashir]

This is now fixed and released in 4.1, if you find any other quirks, please let me know and thanks for your feedback