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pub struct MyApp {
show_hello: bool, // 控制是否显示 "Hello World!"
}
impl Default for MyApp {
fn default() -> Self {
Self { show_hello: false }
}
}
impl eframe::App for MyApp {
fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
egui::CentralPanel::default().show(ctx, |ui| {
// 添加一个按钮
if ui.button("Click me!").clicked() {
self.show_hello = !self.show_hello; // 切换状态
}
// 如果按钮被点击过，显示 "Hello World!"
if self.show_hello {
ui.label("Hello World!");
}
});
}
}
impl MyApp {
pub fn start () {
let options = eframe::NativeOptions::default();
let _ = eframe::run_native(
"My egui App",
options,
Box::new(|_cc| {
Ok(Box::<MyApp>::default())
}),
);
}
}
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