fltk-evented

This crate provides a Listener widget which can basically wrap any fltk-rs widget (implementing WidgetBase and WidgetExt) and provides an triggered interface, without requiring callbacks.

Usage

toml [dependencies] fltk = "1.4" fltk-evented = "0.3"

Example

```rust use fltk::{app, button::Button, frame::Frame, group::Flex, prelude::*, window::Window}; use fltk_evented::Listener;

fn main() { let a = app::App::default().withscheme(app::Scheme::Gtk); app::setfont_size(20);

let mut wind = Window::default()
    .with_size(160, 200)
    .center_screen()
    .with_label("Counter");
let flex = Flex::default()
    .with_size(120, 160)
    .center_of_parent()
    .column();
let but_inc: Listener<_> = Button::default().with_label("+").into();
let mut frame = Frame::default();
let but_dec: Listener<_> = Button::default().with_label("-").into();
flex.end();
wind.end();
wind.show();

let mut val = 0;
frame.set_label(&val.to_string());

while a.wait() {
    if but_inc.triggered() {
        val += 1;
        frame.set_label(&val.to_string());
    }

    if but_dec.triggered() {
        val -= 1;
        frame.set_label(&val.to_string());
    }
}

} ```