b7ebe16cfb
The purpose of this is to expose `frame.storage()` and `frame.storage_mut()` so users can save/load app state from the `App::update` function, without having to add another parameter to that function. Changes: * Added `Frame::storage()` and `Frame::storage_mut()` * `App::update` now takes a `&mut Frame` rather than just `&Frame` * `Frame` is no longer `Clone` or `Sync` (doesn't have to be since https://github.com/emilk/egui/pull/1366)
49 lines
1.3 KiB
Rust
49 lines
1.3 KiB
Rust
#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
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use eframe::egui;
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fn main() {
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let options = eframe::NativeOptions::default();
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eframe::run_native(
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"Confirm exit",
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options,
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Box::new(|_cc| Box::new(MyApp::default())),
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);
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}
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#[derive(Default)]
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struct MyApp {
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can_exit: bool,
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is_exiting: bool,
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}
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impl eframe::App for MyApp {
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fn on_exit_event(&mut self) -> bool {
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self.is_exiting = true;
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self.can_exit
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}
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fn update(&mut self, ctx: &egui::Context, frame: &mut eframe::Frame) {
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egui::CentralPanel::default().show(ctx, |ui| {
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ui.heading("Try to close the window");
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});
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if self.is_exiting {
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egui::Window::new("Do you want to quit?")
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.collapsible(false)
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.resizable(false)
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.show(ctx, |ui| {
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ui.horizontal(|ui| {
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if ui.button("Yes!").clicked() {
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self.can_exit = true;
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frame.quit();
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}
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if ui.button("Not yet").clicked() {
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self.is_exiting = false;
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}
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});
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});
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}
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}
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}
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