fix(855): Windows build

examples/calendar/src/main.rs

@@ -111,7 +111,12 @@ where
     Self: cosmic::Application,
 {
     fn update_title(&mut self) -> Task<Message> {
-        self.set_header_title(String::from("Calendar Demo"));
-        self.set_window_title(String::from("Calendar Demo"))
+        let title = "Calendar Demo";
+        self.set_header_title(title.to_owned());
+
+        self.core
+            .main_window_id()
+            .map(|window_id| self.set_window_title(title.into(), window_id))
+            .unwrap_or_else(Task::none)
     }
 }

examples/cosmic/src/window.rs

@@ -6,10 +6,10 @@ use cosmic::{
         ThemeBuilder,
     },
     font::load_fonts,
-    iced::{self, Application, Length, Subscription, Task},
+    iced::{self, Length, Subscription, Task},
     iced::{
         subscription,
-        widget::{self, column, container, horizontal_space, row, text},
+        widget::{self, column, horizontal_space, row, text},
         window::{self, close, drag, minimize, toggle_maximize},
     },
     iced_futures::event::listen_raw,
@@ -20,7 +20,7 @@ use cosmic::{
         button, container, header_bar, icon, nav_bar, nav_bar_toggle, scrollable, segmented_button,
         settings, warning,
     },
-    Element,
+    Application, Element,
 };
 use cosmic_time::{Instant, Timeline};
 use std::{
@@ -433,10 +433,10 @@ impl Application for Window {
             Message::ToggleNavBarCondensed => {
                 self.nav_bar_toggled_condensed = !self.nav_bar_toggled_condensed
             }
-            Message::Drag => return drag(self.core.main_window_id().unwrap()),
-            Message::Close => return close(self.core.main_window_id().unwrap()),
-            Message::Minimize => return minimize(self.core.main_window_id().unwrap(), true),
-            Message::Maximize => return toggle_maximize(self.core.main_window_id().unwrap()),
+            Message::Drag => return drag(self.core().main_window_id().unwrap()),
+            Message::Close => return close(self.core().main_window_id().unwrap()),
+            Message::Minimize => return minimize(self.core().main_window_id().unwrap(), true),
+            Message::Maximize => return toggle_maximize(self.core().main_window_id().unwrap()),
 
             Message::InputChanged => {}
 

examples/image-button/src/main.rs

@@ -107,7 +107,11 @@ where
     Self: cosmic::Application,
 {
     fn update_title(&mut self) -> Task<Message> {
-        self.set_header_title(String::from("Image Button Demo"));
-        self.set_window_title(String::from("Image Button Demo"))
+        let title = "Image Button Demo";
+        self.set_header_title(title.into());
+        self.core
+            .main_window_id()
+            .map(|window_id| self.set_window_title(title.into(), window_id))
+            .unwrap_or_else(Task::none)
     }
 }

examples/text-input/src/main.rs

@@ -118,6 +118,9 @@ where
     fn update_title(&mut self) -> Task<Message> {
         let window_title = format!("COSMIC TextInputs Demo");
         self.set_header_title(window_title.clone());
-        self.set_window_title(window_title)
+        self.core
+            .main_window_id()
+            .map(|window_id| self.set_window_title(window_title, window_id))
+            .unwrap_or_else(Task::none)
     }
 }

src/desktop.rs

@@ -10,6 +10,7 @@ pub trait IconSourceExt {
     fn as_cosmic_icon(&self) -> crate::widget::icon::Icon;
 }
 
+#[cfg(not(windows))]
 impl IconSourceExt for fde::IconSource {
     fn as_cosmic_icon(&self) -> crate::widget::icon::Icon {
         match self {