add maximized to WindowInfo

update button text
fix clippy

crates/eframe/src/epi.rs

@@ -836,6 +836,9 @@ pub struct WindowInfo {
 
     /// Current monitor size in egui points (logical pixels)
     pub monitor_size: Option<egui::Vec2>,
+
+    /// Are we in maximize mode?
+    pub maximized: bool,
 }
 
 /// Information about the URL.

crates/eframe/src/native/epi_integration.rs

@@ -41,6 +41,7 @@ pub fn read_window_info(window: &winit::window::Window, pixels_per_point: f32) -
             y: size.height,
         },
         monitor_size,
+        maximized: window.is_maximized(),
     }
 }
 
@@ -194,7 +195,7 @@ pub fn handle_app_output(
     }
 
     if let Some(minimized) = minimized {
-        window.set_minimized(minimized)
+        window.set_minimized(minimized);
     }
 
     if let Some(maximized) = maximized {

examples/custom_window_frame/src/main.rs

@@ -112,7 +112,7 @@ fn custom_window_frame(
                     rect.left_top() + vec2((height - 4.0) * 1.0, 0.0),
                     Vec2::splat(height),
                 ),
-                Button::new(RichText::new("--").size(height - 4.0)).frame(false),
+                Button::new(RichText::new("🗕").size(height - 4.0)).frame(false),
             );
             if minimized_response.clicked() {
                 frame.set_minimized(true);
@@ -123,7 +123,7 @@ fn custom_window_frame(
                     rect.left_top() + vec2((height - 4.0) * 2.0, 0.0),
                     Vec2::splat(height),
                 ),
-                Button::new(RichText::new("O").size(height - 4.0)).frame(false),
+                Button::new(RichText::new("🗖").size(height - 4.0)).frame(false),
             );
             if maximized_response.clicked() {
                 app.maximized = !app.maximized;