项目初始化， 串口服务类别

src/main.rs

@@ -0,0 +1,8 @@
+use fltk::{prelude::*, window::Window, *};
+fn main() {
+    let app = app::App::default();
+    let mut window = window::Window::new(100, 100, 400, 300, "Hello from rust");
+    window.end();
+    window.show();
+    app.run().unwrap();
+}