First Application

Let's start by building a simple window that prints Hello World on the screen.

Firts, make sure that you have the following dependency added in your project cargo.toml file:

[dependencies]
appcui = <version>

Then, replace your main.rs with the following snippet:

use appcui::prelude::*;

fn main() -> Result<(), appcui::system::Error> {
    let mut app = App::new().build()?;
    let mut win = Window::new("First Window", Layout::new("d:c,w:30,h:9"), window::Flags::None);
    win.add(Label::new("Hello World !",Layout::new("d:c,w:13,h:1")));
    app.add_window(win);
    app.run();
    Ok(())
}

or using macros to compact the code:

use appcui::prelude::*;

fn main() -> Result<(), appcui::system::Error> {
    let mut app = App::new().build()?;
    let mut win = window!("'First Window',d:c,w:30,h:9");
    win.add(label!("'Hello World !',d:c,w:13,h:1"));
    app.add_window(win);
    app.run();
    Ok(())
}

After compiling and executing this code you should see something like this:

Remarks: Keep in mind that depending on your terminal and other settings this image might look differently.