Window::open() returns WindowHandle struct

examples/open_window.rs

@@ -8,7 +8,7 @@ fn main() {
         parent: baseview::Parent::None,
     };
 
-    Window::open::<MyProgram>(window_open_options);
+    let _handle = Window::open::<MyProgram>(window_open_options);
 }
 
 struct MyProgram {}

src/macos/window.rs

@@ -18,7 +18,7 @@ pub struct Window {
 }
 
 impl Window {
-    pub fn open<H: WindowHandler>(options: WindowOpenOptions) {
+    pub fn open<H: WindowHandler>(options: WindowOpenOptions) -> WindowHandle {
         unsafe {
             let _pool = NSAutoreleasePool::new(nil);
 
@@ -52,6 +52,8 @@ impl Window {
             let current_app = NSRunningApplication::currentApplication(nil);
             current_app.activateWithOptions_(NSApplicationActivateIgnoringOtherApps);
             app.run();
+
+            WindowHandle
         }
     }
 }
@@ -65,3 +67,5 @@ unsafe impl HasRawWindowHandle for Window {
         })
     }
 }
+
+pub struct WindowHandle;

src/win/window.rs

@@ -136,7 +136,7 @@ pub struct Window {
 }
 
 impl Window {
-    pub fn open<H: WindowHandler>(options: WindowOpenOptions) {
+    pub fn open<H: WindowHandler>(options: WindowOpenOptions) -> WindowHandle {
         unsafe {
             let title = (options.title.to_owned() + "\0").as_ptr() as *const i8;
 
@@ -213,6 +213,8 @@ impl Window {
                 }
             }
         }
+
+        WindowHandle
     }
 }
 
@@ -224,3 +226,5 @@ unsafe impl HasRawWindowHandle for Window {
         })
     }
 }
+
+pub struct WindowHandle;

src/x11/window.rs

@@ -13,7 +13,7 @@ pub struct Window {
 }
 
 impl Window {
-    pub fn open<H: WindowHandler>(options: WindowOpenOptions) {
+    pub fn open<H: WindowHandler>(options: WindowOpenOptions) -> WindowHandle {
         // Convert the parent to a X11 window ID if we're given one
         let parent = match options.parent {
             Parent::None => None,
@@ -102,6 +102,8 @@ impl Window {
         let mut handler = H::build(&mut window);
 
         run_event_loop(&mut window, &mut handler);
+
+        WindowHandle
     }
 }
 
@@ -115,6 +117,8 @@ unsafe impl HasRawWindowHandle for Window {
     }
 }
 
+pub struct WindowHandle;
+
 // Event loop
 fn run_event_loop<H: WindowHandler>(window: &mut Window, handler: &mut H) {
     loop {