Adds get_pixel_format() to Window

src/win32/init.rs

@@ -203,16 +203,17 @@ unsafe fn init(title: Vec<u16>, builder: BuilderAttribs<'static>,
     };
 
     // calling SetPixelFormat
-    {
+    let pixel_format = {
         let formats = if extra_functions.GetPixelFormatAttribivARB.is_loaded() {
             enumerate_arb_pixel_formats(&extra_functions, &real_window)
         } else {
             enumerate_native_pixel_formats(&real_window)
         };
 
-        let (id, _) = try!(builder.choose_pixel_format(formats.into_iter().map(|(a, b)| (b, a))));
+        let (id, f) = try!(builder.choose_pixel_format(formats.into_iter().map(|(a, b)| (b, a))));
         try!(set_pixel_format(&real_window, id));
-    }
+        f
+    };
 
     // creating the OpenGL context
     let context = try!(create_context(Some((&extra_functions, &builder)), &real_window,
@@ -263,6 +264,7 @@ unsafe fn init(title: Vec<u16>, builder: BuilderAttribs<'static>,
         events_receiver: events_receiver,
         is_closed: AtomicBool::new(false),
         cursor_state: cursor_state,
+        pixel_format: pixel_format,
     })
 }
 

src/win32/mod.rs

@@ -13,6 +13,7 @@ use libc;
 use {CreationError, Event, MouseCursor};
 use CursorState;
 
+use PixelFormat;
 use BuilderAttribs;
 
 pub use self::headless::HeadlessContext;
@@ -53,6 +54,9 @@ pub struct Window {
 
     /// The current cursor state.
     cursor_state: Arc<Mutex<CursorState>>,
+
+    /// The pixel format that has been used to create this window.
+    pixel_format: PixelFormat,
 }
 
 unsafe impl Send for Window {}
@@ -258,6 +262,10 @@ impl Window {
         ::Api::OpenGl
     }
 
+    pub fn get_pixel_format(&self) -> PixelFormat {
+        self.pixel_format.clone()
+    }
+
     pub fn set_window_resize_callback(&mut self, _: Option<fn(u32, u32)>) {
     }