From d89528548268fd43af1710f7fd53daf9692818ad Mon Sep 17 00:00:00 2001
From: Emil Ernerfeldt <emilernerfeldt@gmail.com>
Date: Sun, 10 Jan 2021 10:41:46 +0100
Subject: [PATCH] [demo] Window options window: add checkbox to toggle close
 button

---
 egui_demo_lib/src/apps/demo/window_options.rs | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/egui_demo_lib/src/apps/demo/window_options.rs b/egui_demo_lib/src/apps/demo/window_options.rs
index b62b3bb4..74947aa3 100644
--- a/egui_demo_lib/src/apps/demo/window_options.rs
+++ b/egui_demo_lib/src/apps/demo/window_options.rs
@@ -5,6 +5,7 @@ use crate::__egui_github_link_file;
 pub struct WindowOptions {
     title: String,
     title_bar: bool,
+    closable: bool,
     collapsible: bool,
     resizable: bool,
     scroll: bool,
@@ -15,6 +16,7 @@ impl Default for WindowOptions {
         Self {
             title: "🗖 Window Options".to_owned(),
             title_bar: true,
+            closable: true,
             collapsible: true,
             resizable: true,
             scroll: false,
@@ -32,20 +34,23 @@ impl super::Demo for WindowOptions {
         let Self {
             title,
             title_bar,
+            closable,
             collapsible,
             resizable,
             scroll,
         } = self.clone();
 
         use super::View;
-        egui::Window::new(title)
+        let mut window = egui::Window::new(title)
             .id(egui::Id::new("demo_window_options")) // required since we change the title
-            .open(open)
             .resizable(resizable)
             .collapsible(collapsible)
             .title_bar(title_bar)
-            .scroll(scroll)
-            .show(ctx, |ui| self.ui(ui));
+            .scroll(scroll);
+        if closable {
+            window = window.open(open);
+        }
+        window.show(ctx, |ui| self.ui(ui));
     }
 }
 
@@ -56,6 +61,7 @@ impl super::View for WindowOptions {
         let Self {
             title,
             title_bar,
+            closable,
             collapsible,
             resizable,
             scroll,
@@ -66,6 +72,7 @@ impl super::View for WindowOptions {
             ui.text_edit_singleline(title);
         });
         ui.checkbox(title_bar, "title_bar");
+        ui.checkbox(closable, "closable");
         ui.checkbox(collapsible, "collapsible");
         ui.checkbox(resizable, "resizable");
         ui.checkbox(scroll, "scroll");