Simplify

examples/custom_window_frame/src/main.rs

@@ -2,7 +2,7 @@
 
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
 
-use eframe::egui::{self, ViewportRender};
+use eframe::egui;
 
 fn main() -> Result<(), eframe::Error> {
     env_logger::init(); // Log to stderr (if you run with `RUST_LOG=debug`).
@@ -30,16 +30,7 @@ impl eframe::App for MyApp {
         egui::Rgba::TRANSPARENT.to_array() // Make sure we don't paint anything behind the rounded corners
     }
 
-    fn update(
-        &mut self,
-        ctx: &egui::Context,
-        frame: &mut eframe::Frame,
-        render: Option<&ViewportRender>,
-    ) {
-        if let Some(render) = render {
-            render(ctx);
-            return;
-        }
+    fn update(&mut self, ctx: &egui::Context, frame: &mut eframe::Frame) {
         custom_window_frame(ctx, frame, "egui with custom frame", |ui| {
             ui.label("This is just the contents of the window.");
             ui.horizontal(|ui| {