Hide console on windows for all examples in release builds (#1008)

eframe/examples/file_dialog.rs

@@ -1,3 +1,5 @@
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
+
 use eframe::{egui, epi};
 
 #[derive(Default)]

eframe/examples/hello_world.rs

@@ -1,3 +1,5 @@
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
+
 use eframe::{egui, epi};
 
 struct MyApp {

eframe/examples/image.rs

@@ -1,3 +1,5 @@
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
+
 use eframe::{egui, epi};
 
 #[derive(Default)]

egui_demo_app/src/main.rs

@@ -1,3 +1,5 @@
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
+
 // Forbid warnings in release builds:
 #![cfg_attr(not(debug_assertions), deny(warnings))]
 #![forbid(unsafe_code)]

egui_glium/examples/native_texture.rs

@@ -1,4 +1,7 @@
 //! Example how to use [epi::NativeTexture] with glium.
+
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
+
 use epi::NativeTexture;
 use glium::glutin;
 

egui_glium/examples/pure_glium.rs

@@ -1,4 +1,7 @@
 //! Example how to use pure `egui_glium` without [`epi`].
+
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
+
 use glium::glutin;
 
 fn create_display(event_loop: &glutin::event_loop::EventLoop<()>) -> glium::Display {

egui_glow/examples/pure_glow.rs

@@ -1,5 +1,7 @@
 //! Example how to use pure `egui_glow` without [`epi`].
 
+#![cfg_attr(not(debug_assertions), windows_subsystem = "windows")] // hide console window on Windows in release
+
 fn create_display(
     event_loop: &glutin::event_loop::EventLoop<()>,
 ) -> (